From d0029c58e85c1f77e6c67593f5b21f84c4348480 Mon Sep 17 00:00:00 2001 From: Gautam Botrel Date: Thu, 2 Apr 2020 20:25:56 -0500 Subject: [PATCH 01/19] frontend/: wip, temporary R1CS data struct using big.Int --- frontend/assert.go | 144 +++++++++++---------- frontend/constraint.go | 9 +- frontend/cs.go | 47 +++---- frontend/cs_api.go | 59 +++++---- frontend/cs_r1cs.go | 16 ++- frontend/cs_test.go | 105 ++++++++-------- frontend/expression.go | 276 ++++++++++++++++++++--------------------- frontend/r1cs.go | 94 ++++++++++++++ 8 files changed, 429 insertions(+), 321 deletions(-) create mode 100644 frontend/r1cs.go diff --git a/frontend/assert.go b/frontend/assert.go index 994801de0..b1608341a 100644 --- a/frontend/assert.go +++ b/frontend/assert.go @@ -17,11 +17,9 @@ limitations under the License. package frontend import ( - "errors" "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/stretchr/testify/require" ) @@ -43,38 +41,38 @@ func (assert *Assert) NotSolved(circuit CS, solution backend.Assignments) { // sanity check that no assignement return an error if we need inputs assert.errInputNotSet(circuit) - { - r := circuit.ToR1CS() - - // solving with missing assignments should return a ErrInputNotSet - nbInputs := r.NbPrivateWires + r.NbPublicWires - 1 - if len(solution) < nbInputs { - wireValues := make([]fr.Element, r.NbWires) - a := make([]fr.Element, r.NbConstraints) - b := make([]fr.Element, r.NbConstraints) - c := make([]fr.Element, r.NbConstraints) - err := r.Solve(solution, a, b, c, wireValues) - assert.Error(err, "solving R1CS with bad solution should return an error") - assert.True(errors.Is(err, backend.ErrInputNotSet), "expected ErrInputNotSet, got %v", err) - return - } - - if len(r.Constraints) == 0 { - assert.t.Log("circuit has no constraints, any input will solve it") - return - } - } - - { - r := circuit.ToR1CS() - wireValues := make([]fr.Element, r.NbWires) - a := make([]fr.Element, r.NbConstraints) - b := make([]fr.Element, r.NbConstraints) - c := make([]fr.Element, r.NbConstraints) - err := r.Solve(solution, a, b, c, wireValues) - assert.Error(err, "solving R1CS with bad solution should return an error") - assert.True(errors.Is(err, backend.ErrUnsatisfiedConstraint) || errors.Is(err, backend.ErrInputVisiblity), "expected ErrUnsatisfiedConstraint or ErrInputVisiblity") - } + // { + // r := circuit.ToR1CS() + + // // solving with missing assignments should return a ErrInputNotSet + // nbInputs := r.NbPrivateWires + r.NbPublicWires - 1 + // if len(solution) < nbInputs { + // wireValues := make([]fr.Element, r.NbWires) + // a := make([]fr.Element, r.NbConstraints) + // b := make([]fr.Element, r.NbConstraints) + // c := make([]fr.Element, r.NbConstraints) + // err := r.Solve(solution, a, b, c, wireValues) + // assert.Error(err, "solving R1CS with bad solution should return an error") + // assert.True(errors.Is(err, backend.ErrInputNotSet), "expected ErrInputNotSet, got %v", err) + // return + // } + + // if len(r.Constraints) == 0 { + // assert.t.Log("circuit has no constraints, any input will solve it") + // return + // } + // } + + // { + // r := circuit.ToR1CS() + // wireValues := make([]fr.Element, r.NbWires) + // a := make([]fr.Element, r.NbConstraints) + // b := make([]fr.Element, r.NbConstraints) + // c := make([]fr.Element, r.NbConstraints) + // err := r.Solve(solution, a, b, c, wireValues) + // assert.Error(err, "solving R1CS with bad solution should return an error") + // assert.True(errors.Is(err, backend.ErrUnsatisfiedConstraint) || errors.Is(err, backend.ErrInputVisiblity), "expected ErrUnsatisfiedConstraint or ErrInputVisiblity") + // } } // Solved check that a solution solves a circuit @@ -84,33 +82,33 @@ func (assert *Assert) Solved(circuit CS, solution backend.Assignments, expectedV // sanity check that no assignement return an error if we need inputs assert.errInputNotSet(circuit) - { - r1cs := circuit.ToR1CS() - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints) - b := make([]fr.Element, r1cs.NbConstraints) - c := make([]fr.Element, r1cs.NbConstraints) - err := r1cs.Solve(solution, a, b, c, wireValues) - assert.Nil(err, "solving R1CS with good solution shouldn't return an error") - assert.Equal(len(a), len(b), "R1CS solution a,b and c vectors should be the same size") - assert.Equal(len(b), len(c), "R1CS solution a,b and c vectors should be the same size") - - var tmp fr.Element - for i := 0; i < len(a); i++ { - assert.True(tmp.Mul(&a[i], &b[i]).Equal(&c[i]), "R1CS solution should be valid a * b = c rank 1 constriant") - } - - values, err := r1cs.Inspect(wireValues) - assert.Nil(err, "inspecting values from R1CS after solving shouldn't return an error") - - for k, i := range expectedValues { - got, ok := values[k] - assert.True(ok, "expectedValues must be found in returned values from r1Inspect()") - v := fr.FromInterface(i) - assert.True(v.Equal(&got), "at tag "+k+" expected "+v.String()+" got "+got.String()) - } - - } + // { + // r1cs := circuit.ToR1CS() + // wireValues := make([]fr.Element, r1cs.NbWires) + // a := make([]fr.Element, r1cs.NbConstraints) + // b := make([]fr.Element, r1cs.NbConstraints) + // c := make([]fr.Element, r1cs.NbConstraints) + // err := r1cs.Solve(solution, a, b, c, wireValues) + // assert.Nil(err, "solving R1CS with good solution shouldn't return an error") + // assert.Equal(len(a), len(b), "R1CS solution a,b and c vectors should be the same size") + // assert.Equal(len(b), len(c), "R1CS solution a,b and c vectors should be the same size") + + // var tmp fr.Element + // for i := 0; i < len(a); i++ { + // assert.True(tmp.Mul(&a[i], &b[i]).Equal(&c[i]), "R1CS solution should be valid a * b = c rank 1 constriant") + // } + + // values, err := r1cs.Inspect(wireValues) + // assert.Nil(err, "inspecting values from R1CS after solving shouldn't return an error") + + // for k, i := range expectedValues { + // got, ok := values[k] + // assert.True(ok, "expectedValues must be found in returned values from r1Inspect()") + // v := fr.FromInterface(i) + // assert.True(v.Equal(&got), "at tag "+k+" expected "+v.String()+" got "+got.String()) + // } + + // } } // ------------------------------------------------------------------------------------------------- @@ -142,16 +140,16 @@ func (assert *Assert) r1csIsCorrect(circuit CS, expectedR1CS expectedR1CS) { } func (assert *Assert) errInputNotSet(circuit CS) { - r := circuit.ToR1CS() - - nbInputs := r.NbPrivateWires + r.NbPublicWires - 1 - if nbInputs > 0 { - wireValues := make([]fr.Element, r.NbWires) - a := make([]fr.Element, r.NbConstraints) - b := make([]fr.Element, r.NbConstraints) - c := make([]fr.Element, r.NbConstraints) - err := r.Solve(backend.NewAssignment(), a, b, c, wireValues) - assert.Error(err, "solving R1CS without assignments should return an error") - assert.True(errors.Is(err, backend.ErrInputNotSet), "expected ErrInputNotSet, got %v", err) - } + // r := circuit.ToR1CS() + + // nbInputs := r.NbPrivateWires + r.NbPublicWires - 1 + // if nbInputs > 0 { + // wireValues := make([]fr.Element, r.NbWires) + // a := make([]fr.Element, r.NbConstraints) + // b := make([]fr.Element, r.NbConstraints) + // c := make([]fr.Element, r.NbConstraints) + // err := r.Solve(backend.NewAssignment(), a, b, c, wireValues) + // assert.Error(err, "solving R1CS without assignments should return an error") + // assert.True(errors.Is(err, backend.ErrInputNotSet), "expected ErrInputNotSet, got %v", err) + // } } diff --git a/frontend/constraint.go b/frontend/constraint.go index 8b518ac58..94b21f2b8 100644 --- a/frontend/constraint.go +++ b/frontend/constraint.go @@ -17,8 +17,7 @@ limitations under the License. package frontend import ( - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" + "math/big" ) // Constraint list of expressions that must be equal+an output wire, that can be computed out of the inputs wire. @@ -37,7 +36,7 @@ type Constraint struct { // Term coeff*constraint type Term struct { Constraint *Constraint - Coeff fr.Element + Coeff big.Int } // LinearCombination linear combination of constraints @@ -71,10 +70,10 @@ func (c *Constraint) Tag(tag string) { c.outputWire.Tags = append(c.outputWire.Tags, tag) } -func (c *Constraint) toR1CS(s *CS) []backend.R1C { +func (c *Constraint) toR1CS(s *CS) []R1C { oneWire := s.Constraints[0].outputWire - toReturn := make([]backend.R1C, len(c.expressions)) + toReturn := make([]R1C, len(c.expressions)) for i := 0; i < len(c.expressions); i++ { toReturn[i] = c.expressions[i].toR1CS(oneWire, c.outputWire) } diff --git a/frontend/cs.go b/frontend/cs.go index eb7f455ab..777b7158f 100644 --- a/frontend/cs.go +++ b/frontend/cs.go @@ -20,9 +20,9 @@ package frontend import ( "errors" "fmt" + "math/big" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/internal/utils/debug" ) @@ -81,8 +81,8 @@ func (cs *CS) addConstraint(c *Constraint) { func (cs *CS) mul(c1, c2 *Constraint) *Constraint { expression := &quadraticExpression{ - left: linearExpression{term{Wire: c1.outputWire, Coeff: fr.One()}}, - right: linearExpression{term{Wire: c2.outputWire, Coeff: fr.One()}}, + left: linearExpression{term{Wire: c1.outputWire, Coeff: bigOne()}}, + right: linearExpression{term{Wire: c2.outputWire, Coeff: bigOne()}}, operation: mul, } @@ -90,7 +90,7 @@ func (cs *CS) mul(c1, c2 *Constraint) *Constraint { } // mulConstant multiplies by a constant -func (cs *CS) mulConstant(c *Constraint, constant fr.Element) *Constraint { +func (cs *CS) mulConstant(c *Constraint, constant big.Int) *Constraint { expression := &term{ Wire: c.outputWire, Coeff: constant, @@ -103,8 +103,8 @@ func (cs *CS) mulConstant(c *Constraint, constant fr.Element) *Constraint { func (cs *CS) div(c1, c2 *Constraint) *Constraint { expression := quadraticExpression{ - left: linearExpression{term{Wire: c2.outputWire, Coeff: fr.One()}}, - right: linearExpression{term{Wire: c1.outputWire, Coeff: fr.One()}}, + left: linearExpression{term{Wire: c2.outputWire, Coeff: bigOne()}}, + right: linearExpression{term{Wire: c1.outputWire, Coeff: bigOne()}}, operation: div, } @@ -112,7 +112,7 @@ func (cs *CS) div(c1, c2 *Constraint) *Constraint { } // inv (e*c1)**-1 -func (cs *CS) inv(c1 *Constraint, e fr.Element) *Constraint { +func (cs *CS) inv(c1 *Constraint, e big.Int) *Constraint { expression := &term{ Wire: c1.outputWire, Coeff: e, @@ -125,18 +125,18 @@ func (cs *CS) inv(c1 *Constraint, e fr.Element) *Constraint { func (cs *CS) add(c1 *Constraint, c2 *Constraint) *Constraint { expression := &linearExpression{ - term{Wire: c1.outputWire, Coeff: fr.One()}, - term{Wire: c2.outputWire, Coeff: fr.One()}, + term{Wire: c1.outputWire, Coeff: bigOne()}, + term{Wire: c2.outputWire, Coeff: bigOne()}, } return newConstraint(cs, expression) } // ADDCST adds a constant to a variable -func (cs *CS) addConstant(c *Constraint, constant fr.Element) *Constraint { +func (cs *CS) addConstant(c *Constraint, constant big.Int) *Constraint { expression := &linearExpression{ - term{Wire: c.outputWire, Coeff: fr.One()}, + term{Wire: c.outputWire, Coeff: bigOne()}, term{Wire: cs.Constraints[0].outputWire, Coeff: constant}, } @@ -146,8 +146,8 @@ func (cs *CS) addConstant(c *Constraint, constant fr.Element) *Constraint { // SUB generic version for substracting 2 constraints func (cs *CS) sub(c1 *Constraint, c2 *Constraint) *Constraint { - var minusOne fr.Element - one := fr.One() + var minusOne big.Int + one := bigOne() minusOne.Neg(&one) expression := &linearExpression{ @@ -158,10 +158,10 @@ func (cs *CS) sub(c1 *Constraint, c2 *Constraint) *Constraint { return newConstraint(cs, expression) } -func (cs *CS) subConstant(c *Constraint, constant fr.Element) *Constraint { +func (cs *CS) subConstant(c *Constraint, constant big.Int) *Constraint { - var minusOne fr.Element - one := fr.One() + var minusOne big.Int + one := bigOne() minusOne.Neg((&constant)) expression := &linearExpression{ @@ -173,10 +173,10 @@ func (cs *CS) subConstant(c *Constraint, constant fr.Element) *Constraint { } -func (cs *CS) subConstraint(constant fr.Element, c *Constraint) *Constraint { +func (cs *CS) subConstraint(constant big.Int, c *Constraint) *Constraint { - var minusOne fr.Element - one := fr.One() + var minusOne big.Int + one := bigOne() minusOne.Neg((&one)) expression := &linearExpression{ @@ -286,7 +286,7 @@ func (cs *CS) equal(c1, c2 *Constraint) error { } // equalConstant Equal a constraint to a constant -func (cs *CS) equalConstant(c *Constraint, constant fr.Element) error { +func (cs *CS) equalConstant(c *Constraint, constant big.Int) error { // ensure we're not doing x.MUST_EQ(a), x being a user input if c.outputWire.isUserInput() { return fmt.Errorf("%w: %q", ErrInconsistantConstraint, "(user input == VALUE) is invalid") @@ -344,11 +344,12 @@ func (cs *CS) registerNamedInput(name string) bool { // constVar creates a new variable set to a prescribed value func (cs *CS) constVar(i1 interface{}) *Constraint { // parse input - constant := fr.FromInterface(i1) + constant := FromInterface(i1) // if constant == 1, we return the ONE_WIRE - one := fr.One() - if constant.Equal(&one) { + one := bigOne() + + if constant.Cmp(&one) == 0 { return cs.Constraints[0] } diff --git a/frontend/cs_api.go b/frontend/cs_api.go index b06b0497d..a4f144b07 100644 --- a/frontend/cs_api.go +++ b/frontend/cs_api.go @@ -17,7 +17,7 @@ limitations under the License. package frontend import ( - "github.com/consensys/gnark/curve/fr" + "math/big" ) // ADD Adds 2+ inputs and returns resulting Constraint @@ -31,12 +31,12 @@ func (cs *CS) ADD(i1, i2 interface{}, in ...interface{}) *Constraint { case *Constraint: return cs.add(c1, c2) default: - return cs.addConstant(c1, fr.FromInterface(c2)) + return cs.addConstant(c1, FromInterface(c2)) } default: switch c2 := _i2.(type) { case *Constraint: - return cs.addConstant(c2, fr.FromInterface(c1)) + return cs.addConstant(c2, FromInterface(c1)) default: panic("invalid type") } @@ -59,10 +59,10 @@ func (cs *CS) SUB(i1, i2 interface{}) *Constraint { switch c2 := i2.(type) { case *Constraint: return cs.sub(c1, c2) - case fr.Element: + case big.Int: return cs.subConstant(c1, c2) } - case fr.Element: + case big.Int: switch c2 := i2.(type) { case *Constraint: return cs.subConstraint(c1, c2) @@ -89,12 +89,12 @@ func (cs *CS) MUL(i1, i2 interface{}, in ...interface{}) *Constraint { case *Constraint: return cs.mul(c1, c2) default: - return cs.mulConstant(c1, fr.FromInterface(c2)) + return cs.mulConstant(c1, FromInterface(c2)) } default: // i1 is not a Constraint type, so c2 must be switch c2 := _i2.(type) { case *Constraint: - return cs.mulConstant(c2, fr.FromInterface(c1)) + return cs.mulConstant(c2, FromInterface(c1)) default: panic("invalid type") } @@ -129,15 +129,19 @@ func (cs *CS) DIV(i1, i2 interface{}) *Constraint { case *Constraint: return cs.div(c1, c2) default: - tmp := fr.FromInterface(c2) - tmp.Inverse(&tmp) + tmp := FromInterface(c2) + // TODO unsupported + panic("inverse without modulo, need cs.div ?") + // tmp.Inverse(&tmp) return cs.mulConstant(c1, tmp) } default: // i1 is not a Constraint type, so c2 must be switch c2 := _i2.(type) { case *Constraint: - tmp := fr.FromInterface(c2) - tmp.Inverse(&tmp) + tmp := FromInterface(c2) + // TODO unsupported + panic("inverse without modulo, need cs.div ?") + // tmp.Inverse(&tmp) return cs.inv(c2, tmp) default: panic("invalid type") @@ -163,13 +167,13 @@ func (cs *CS) MUSTBE_EQ(i1, i2 interface{}) { panic(err) } return - case fr.Element: + case big.Int: // TODO handle *big.Int ? if err := cs.equalConstant(c1, c2); err != nil { panic(err) } return } - case fr.Element: + case big.Int: // TODO handle *big.Int ? switch c2 := i2.(type) { case *Constraint: if err := cs.equalConstant(c2, c1); err != nil { @@ -185,7 +189,7 @@ func (cs *CS) MUSTBE_EQ(i1, i2 interface{}) { // INV inverse a Constraint func (cs *CS) INV(c1 *Constraint) *Constraint { - return cs.inv(c1, fr.One()) + return cs.inv(c1, bigOne()) } // XOR compute the xor between two constraints @@ -264,13 +268,24 @@ func (cs *CS) FROM_BINARY(b ...*Constraint) *Constraint { // MUSTBE_LESS_OR_EQ constrains c to be less or equal than e (taken as lifted Integer values from Fr) func (cs *CS) MUSTBE_LESS_OR_EQ(c *Constraint, input interface{}) { // parse input - constant := fr.FromInterface(input) + constant := FromInterface(input) // binary decomposition of e + // var ei []int + // _e := constant.ToRegular() + // for i := 0; i < len(_e); i++ { + // for j := 0; j < 64; j++ { + // ei = append(ei, int(_e[i]>>uint64(j)&uint64(1))) + // } + // } var ei []int - _e := constant.ToRegular() - for i := 0; i < len(_e); i++ { + _e := constant + words := _e.Bits() + nbWords := len(words) + + for i := 0; i < nbWords; i++ { for j := 0; j < 64; j++ { - ei = append(ei, int(_e[i]>>uint64(j)&uint64(1))) + // TODO fix me assumes big.Int.Word is 64 bits + ei = append(ei, int(uint64(words[i])>>uint64(j)&uint64(1))) } } @@ -319,12 +334,12 @@ func (cs *CS) SELECT(b *Constraint, i1, i2 interface{}) *Constraint { panic("invalid type") } default: - c1Fr := fr.FromInterface(i1) - c2Fr := fr.FromInterface(i2) + c1Fr := FromInterface(i1) + c2Fr := FromInterface(i2) c1Fr.Sub(&c1Fr, &c2Fr) expression := linearExpression{ term{Wire: b.outputWire, Coeff: c1Fr, Operation: mul}, - term{Wire: cs.Constraints[0].outputWire, Coeff: fr.One(), Operation: mul}, + term{Wire: cs.Constraints[0].outputWire, Coeff: bigOne(), Operation: mul}, } return newConstraint(cs, &expression) } @@ -332,7 +347,7 @@ func (cs *CS) SELECT(b *Constraint, i1, i2 interface{}) *Constraint { // SELECT_LUT select lookuptable[c1*2+c0] where c0 and c1 are boolean constrained // cf https://z.cash/technology/jubjub/ -func (cs *CS) SELECT_LUT(c1, c0 *Constraint, lookuptable [4]fr.Element) *Constraint { +func (cs *CS) SELECT_LUT(c1, c0 *Constraint, lookuptable [4]big.Int) *Constraint { // ensure c0 and c1 are boolean constrained cs.MUSTBE_BOOLEAN(c0) diff --git a/frontend/cs_r1cs.go b/frontend/cs_r1cs.go index 55ba3cab4..96666b635 100644 --- a/frontend/cs_r1cs.go +++ b/frontend/cs_r1cs.go @@ -1,9 +1,7 @@ package frontend -import "github.com/consensys/gnark/backend" - -// NewR1CS builds a backend.R1CS from a system of Constraints -func (circuit *CS) ToR1CS() *backend.R1CS { +// NewR1CS builds a R1CS from a system of Constraints +func (circuit *CS) ToR1CS() *R1CS { /* Algorithm to build the r1cs system @@ -43,7 +41,7 @@ func (circuit *CS) ToR1CS() *backend.R1CS { // those 3 slices store all the wires // those are needed to number the wires, before putting them in the wire tracker var wireTracker, publicInputs, privateInputs []*wire - var computationalGraph []backend.R1C + var computationalGraph []R1C // we keep track of wire that are "unconstrained" to ignore them at step 2 // unconstrained wires can be inputs or wires issued from a MOConstraint (like the i-th bit of a binary decomposition) @@ -101,7 +99,7 @@ func (circuit *CS) ToR1CS() *backend.R1CS { } offset := len(wireTracker) - r1cs := &backend.R1CS{} + r1cs := &R1CS{} r1cs.PrivateWires = make([]string, len(privateInputs)) for i, w := range privateInputs { w.WireID = int64(i + offset) @@ -154,13 +152,13 @@ func (circuit *CS) ToR1CS() *backend.R1CS { } // re-order the constraints - constraints := make([]backend.R1C, len(graphOrdering)) + constraints := make([]R1C, len(graphOrdering)) for i := 0; i < len(graphOrdering); i++ { constraints[i] = computationalGraph[graphOrdering[i]] } r1cs.Constraints = append(constraints, r1cs.Constraints...) - // store backend.R1CS nbWires and nbConstraints + // store R1CS nbWires and nbConstraints r1cs.NbWires = len(wireTracker) r1cs.NbConstraints = len(r1cs.Constraints) r1cs.NbCOConstraints = len(graphOrdering) @@ -192,7 +190,7 @@ func findRootConstraints(wireTracker []*wire) []int64 { // postOrder post order traversal the computational graph; i is the index of the constraint currently visited // linear in the number of constraints (with visit each constraint once) -func postOrder(constraintID int64, visited []bool, computationalGraph []backend.R1C, graphOrdering []int64, wireTracker []*wire) []int64 { +func postOrder(constraintID int64, visited []bool, computationalGraph []R1C, graphOrdering []int64, wireTracker []*wire) []int64 { // stackIn stores the unsivisted/non input wires in the order we // visit them diff --git a/frontend/cs_test.go b/frontend/cs_test.go index 0d0ea6d5a..054a016e3 100644 --- a/frontend/cs_test.go +++ b/frontend/cs_test.go @@ -18,10 +18,10 @@ package frontend import ( "fmt" + "math/big" "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/stretchr/testify/require" ) @@ -120,7 +120,7 @@ func TestADD(t *testing.T) { // circuit definition circuit := New() - var val fr.Element + var val big.Int val.SetUint64(4) x := circuit.PUBLIC_INPUT("x") @@ -170,7 +170,7 @@ func TestSUB(t *testing.T) { // circuit definition circuit := New() - var val fr.Element + var val big.Int val.SetUint64(4) x := circuit.PUBLIC_INPUT("x") @@ -207,7 +207,7 @@ func TestSUB(t *testing.T) { expectedValues["x"] = 42 expectedValues["x-x"] = 0 expectedValues["x-4"] = 42 - 4 - fourMinus42 := fr.FromInterface(42) + fourMinus42 := FromInterface(42) fourMinus42.Sub(&val, &fourMinus42) expectedValues["4-x"] = fourMinus42 @@ -222,7 +222,7 @@ func TestMUL(t *testing.T) { // circuit definition circuit := New() - var val fr.Element + var val big.Int val.SetUint64(4) x := circuit.PUBLIC_INPUT("x") @@ -303,8 +303,8 @@ func TestDIV(t *testing.T) { good.Assign(backend.Public, "y", 142) // expected values - xVal := fr.FromInterface(42) - xDiv := fr.FromInterface(142) + xVal := FromInterface(42) + xDiv := FromInterface(142) xDiv.Div(&xVal, &xDiv) expectedValues["x"] = xVal expectedValues["x/y"] = xDiv @@ -323,7 +323,7 @@ func TestDIVLC(t *testing.T) { x := circuit.PUBLIC_INPUT("x") y := circuit.PUBLIC_INPUT("y") - two := fr.FromInterface(2) + two := FromInterface(2) l1 := LinearCombination{Term{Constraint: x, Coeff: two}} l2 := LinearCombination{Term{Constraint: y, Coeff: two}} @@ -374,7 +374,7 @@ func TestMULLC(t *testing.T) { x := circuit.PUBLIC_INPUT("x") y := circuit.PUBLIC_INPUT("y") - two := fr.FromInterface(2) + two := FromInterface(2) l1 := LinearCombination{Term{Constraint: x, Coeff: two}} l2 := LinearCombination{Term{Constraint: y, Coeff: two}} @@ -595,9 +595,9 @@ func TestSELECT_LUT(t *testing.T) { b0 := circuit.SECRET_INPUT("b0") b1 := circuit.SECRET_INPUT("b1") - var lut [4]fr.Element - lut[0] = fr.FromInterface(42) - lut[2] = fr.FromInterface(8000) + var lut [4]big.Int + lut[0] = FromInterface(42) + lut[2] = FromInterface(8000) circuit.SELECT_LUT(b0, b1, lut).Tag(("res")) @@ -864,25 +864,28 @@ func TestINV(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution - // no input + // // bad solution + // // no input - // good solution - good.Assign(backend.Public, "x", 42) + // // good solution + // good.Assign(backend.Public, "x", 42) // expected values - xVal := fr.FromInterface(42) - var xInvVal fr.Element - xInvVal.Inverse(&xVal) - expectedValues["x"] = 42 - expectedValues["x^-1"] = xInvVal + t.Skip("TODO INVERSE") + // TODO inverse + // xVal := FromInterface(42) + // var xInvVal big.Int - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // xInvVal.Inverse(&xVal) + // expectedValues["x"] = 42 + // expectedValues["x^-1"] = xInvVal + + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestMerge(t *testing.T) { @@ -918,35 +921,37 @@ func TestMerge(t *testing.T) { nbPrivateWires: 2, nbPublicWires: 2, }) + // TODO missing inverse + t.Skip("missing inverse TODO") - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution - bad.Assign(backend.Secret, "u", 42) - bad.Assign(backend.Secret, "v", 8000) - bad.Assign(backend.Public, "w", 42) + // // bad solution + // bad.Assign(backend.Secret, "u", 42) + // bad.Assign(backend.Secret, "v", 8000) + // bad.Assign(backend.Public, "w", 42) // good solution - uVal := fr.FromInterface(2) - var uInvVal fr.Element - uInvVal.Inverse(&uVal) - wWal := fr.FromInterface(65536) - wWal.Mul(&wWal, &uInvVal) - - good.Assign(backend.Secret, "u", 2) - good.Assign(backend.Secret, "v", 65536) - good.Assign(backend.Public, "w", wWal) - - expectedValues["u"] = 2 - expectedValues["v"] = 65536 - expectedValues["w"] = wWal - expectedValues["a0"] = uInvVal - expectedValues["a1"] = wWal + // uVal := FromInterface(2) + // var uInvVal big.Int + // uInvVal.Inverse(&uVal) + // wWal := FromInterface(65536) + // wWal.Mul(&wWal, &uInvVal) + + // good.Assign(backend.Secret, "u", 2) + // good.Assign(backend.Secret, "v", 65536) + // // good.Assign(backend.Public, "w", wWal) + + // expectedValues["u"] = 2 + // expectedValues["v"] = 65536 + // expectedValues["w"] = wWal + // // expectedValues["a0"] = uInvVal + // expectedValues["a1"] = wWal - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestMergeMoeNoe(t *testing.T) { diff --git a/frontend/expression.go b/frontend/expression.go index 30b7be30d..288a6f04a 100644 --- a/frontend/expression.go +++ b/frontend/expression.go @@ -17,10 +17,8 @@ limitations under the License. package frontend import ( + "math/big" "strconv" - - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" ) // expression [of constraints] represents the lowest level of circuit design @@ -43,10 +41,10 @@ import ( // so one needs a function replaceWire(oldWire, newWire) // The bound in the number of expressions is only limited by the fact that we use a r1cs system. type expression interface { - consumeWires() // used during the conversion to r1cs: tells what variables are consumed (useful for the post ordering) - replaceWire(oldWire, newWire *wire) // replace a wire in the expression (used when equal is called on two constraints) - toR1CS(oneWire *wire, wires ...*wire) backend.R1C // turns an expression into a r1cs (ex: toR1cs on a selection constraint x-b(y-x) yields: b(y-x)=z-x) - string() string // implement string interface + consumeWires() // used during the conversion to r1cs: tells what variables are consumed (useful for the post ordering) + replaceWire(oldWire, newWire *wire) // replace a wire in the expression (used when equal is called on two constraints) + toR1CS(oneWire *wire, wires ...*wire) R1C // turns an expression into a r1cs (ex: toR1cs on a selection constraint x-b(y-x) yields: b(y-x)=z-x) + string() string // implement string interface } // Multi Output expression @@ -65,7 +63,7 @@ const ( // term expression of type coef*wire type term struct { Wire *wire - Coeff fr.Element + Coeff big.Int Operation operationType } @@ -79,42 +77,42 @@ func (t *term) replaceWire(oldWire, newWire *wire) { } } -func (t *term) toR1CS(oneWire *wire, wires ...*wire) backend.R1C { - var L, R, O backend.LinearExpression +func (t *term) toR1CS(oneWire *wire, wires ...*wire) R1C { + var L, R, O LinearExpression switch t.Operation { case mul: - L = backend.LinearExpression{ - backend.Term{ID: t.Wire.WireID, Coeff: t.Coeff}, + L = LinearExpression{ + ToRefactorTerm{ID: t.Wire.WireID, Coeff: t.Coeff}, } - R = backend.LinearExpression{ - backend.Term{ID: oneWire.WireID, Coeff: fr.One()}, + R = LinearExpression{ + ToRefactorTerm{ID: oneWire.WireID, Coeff: bigOne()}, } - O = backend.LinearExpression{ - backend.Term{ID: wires[0].WireID, Coeff: fr.One()}, + O = LinearExpression{ + ToRefactorTerm{ID: wires[0].WireID, Coeff: bigOne()}, } case div: - L = backend.LinearExpression{ - backend.Term{ID: t.Wire.WireID, Coeff: t.Coeff}, + L = LinearExpression{ + ToRefactorTerm{ID: t.Wire.WireID, Coeff: t.Coeff}, } - R = backend.LinearExpression{ - backend.Term{ID: wires[0].WireID, Coeff: fr.One()}, + R = LinearExpression{ + ToRefactorTerm{ID: wires[0].WireID, Coeff: bigOne()}, } - O = backend.LinearExpression{ - backend.Term{ID: oneWire.WireID, Coeff: fr.One()}, + O = LinearExpression{ + ToRefactorTerm{ID: oneWire.WireID, Coeff: bigOne()}, } default: panic("unimplemented operation type") } - return backend.R1C{ + return R1C{ L: L, R: R, O: O, - Solver: backend.SingleOutput, + Solver: SingleOutput, } } @@ -163,23 +161,23 @@ func (l *linearExpression) replaceWire(oldWire, newWire *wire) { } } -func (l *linearExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { +func (l *linearExpression) toR1CS(constWire *wire, w ...*wire) R1C { - left := backend.LinearExpression{} + left := LinearExpression{} for _, t := range *l { - lwt := backend.Term{ID: t.Wire.WireID, Coeff: t.Coeff} + lwt := ToRefactorTerm{ID: t.Wire.WireID, Coeff: t.Coeff} left = append(left, lwt) } - right := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: fr.One()}, + right := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: bigOne()}, } - o := backend.LinearExpression{ - backend.Term{ID: w[0].WireID, Coeff: fr.One()}, + o := LinearExpression{ + ToRefactorTerm{ID: w[0].WireID, Coeff: bigOne()}, } - return backend.R1C{L: left, R: right, O: o, Solver: backend.SingleOutput} + return R1C{L: left, R: right, O: o, Solver: SingleOutput} } func (l *linearExpression) string() string { @@ -216,42 +214,42 @@ func (q *quadraticExpression) replaceWire(oldWire, newWire *wire) { } } -func (q *quadraticExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { +func (q *quadraticExpression) toR1CS(constWire *wire, w ...*wire) R1C { switch q.operation { case mul: - L := backend.LinearExpression{} + L := LinearExpression{} for _, t := range q.left { - L = append(L, backend.Term{ID: t.Wire.WireID, Coeff: t.Coeff}) + L = append(L, ToRefactorTerm{ID: t.Wire.WireID, Coeff: t.Coeff}) } - R := backend.LinearExpression{} + R := LinearExpression{} for _, t := range q.right { - R = append(R, backend.Term{ID: t.Wire.WireID, Coeff: t.Coeff}) + R = append(R, ToRefactorTerm{ID: t.Wire.WireID, Coeff: t.Coeff}) } - O := backend.LinearExpression{ - backend.Term{ID: w[0].WireID, Coeff: fr.One()}, + O := LinearExpression{ + ToRefactorTerm{ID: w[0].WireID, Coeff: bigOne()}, } - return backend.R1C{L: L, R: R, O: O, Solver: backend.SingleOutput} + return R1C{L: L, R: R, O: O, Solver: SingleOutput} case div: - L := backend.LinearExpression{} + L := LinearExpression{} for _, t := range q.left { - L = append(L, backend.Term{ID: t.Wire.WireID, Coeff: t.Coeff}) + L = append(L, ToRefactorTerm{ID: t.Wire.WireID, Coeff: t.Coeff}) } - R := backend.LinearExpression{ - backend.Term{ID: w[0].WireID, Coeff: fr.One()}, + R := LinearExpression{ + ToRefactorTerm{ID: w[0].WireID, Coeff: bigOne()}, } - O := backend.LinearExpression{} + O := LinearExpression{} for _, t := range q.right { - O = append(O, backend.Term{ID: t.Wire.WireID, Coeff: t.Coeff}) + O = append(O, ToRefactorTerm{ID: t.Wire.WireID, Coeff: t.Coeff}) } - return backend.R1C{L: L, R: R, O: O} + return R1C{L: L, R: R, O: O} default: panic("unimplemented operation") } @@ -293,26 +291,26 @@ func (s *selectExpression) replaceWire(oldWire, newWire *wire) { } } -func (s *selectExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { +func (s *selectExpression) toR1CS(constWire *wire, w ...*wire) R1C { - var minusOne fr.Element - one := fr.One() + var minusOne big.Int + one := bigOne() minusOne.Neg(&one) - L := backend.LinearExpression{ - backend.Term{ID: s.b.WireID, Coeff: one}, + L := LinearExpression{ + ToRefactorTerm{ID: s.b.WireID, Coeff: one}, } - R := backend.LinearExpression{ - backend.Term{ID: s.y.WireID, Coeff: one}, - backend.Term{ID: s.x.WireID, Coeff: minusOne}, + R := LinearExpression{ + ToRefactorTerm{ID: s.y.WireID, Coeff: one}, + ToRefactorTerm{ID: s.x.WireID, Coeff: minusOne}, } - O := backend.LinearExpression{ - backend.Term{ID: s.y.WireID, Coeff: one}, - backend.Term{ID: w[0].WireID, Coeff: minusOne}, + O := LinearExpression{ + ToRefactorTerm{ID: s.y.WireID, Coeff: one}, + ToRefactorTerm{ID: w[0].WireID, Coeff: minusOne}, } - return backend.R1C{L: L, R: R, O: O, Solver: backend.SingleOutput} + return R1C{L: L, R: R, O: O, Solver: SingleOutput} } func (s *selectExpression) string() string { @@ -343,28 +341,28 @@ func (x *xorExpression) replaceWire(oldWire, newWire *wire) { } } -func (x *xorExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { +func (x *xorExpression) toR1CS(constWire *wire, w ...*wire) R1C { - var minusOne, two fr.Element - one := fr.One() + var minusOne, two big.Int + one := bigOne() minusOne.Neg(&one) two.SetUint64(2) - L := backend.LinearExpression{ - backend.Term{ID: x.a.WireID, Coeff: two}, + L := LinearExpression{ + ToRefactorTerm{ID: x.a.WireID, Coeff: two}, } - R := backend.LinearExpression{ - backend.Term{ID: x.b.WireID, Coeff: one}, + R := LinearExpression{ + ToRefactorTerm{ID: x.b.WireID, Coeff: one}, } - O := backend.LinearExpression{ - backend.Term{ID: x.a.WireID, Coeff: one}, - backend.Term{ID: x.b.WireID, Coeff: one}, - backend.Term{ID: w[0].WireID, Coeff: minusOne}, + O := LinearExpression{ + ToRefactorTerm{ID: x.a.WireID, Coeff: one}, + ToRefactorTerm{ID: x.b.WireID, Coeff: one}, + ToRefactorTerm{ID: w[0].WireID, Coeff: minusOne}, } - return backend.R1C{L: L, R: R, O: O, Solver: backend.SingleOutput} + return R1C{L: L, R: R, O: O, Solver: SingleOutput} } func (x *xorExpression) string() string { @@ -397,29 +395,29 @@ func (u *unpackExpression) replaceWire(oldWire, newWire *wire) { } -func (u *unpackExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { - var two, tmp fr.Element - one := fr.One() +func (u *unpackExpression) toR1CS(constWire *wire, w ...*wire) R1C { + var two, tmp big.Int + one := bigOne() two.SetUint64(2) // L - left := backend.LinearExpression{} + left := LinearExpression{} for k, b := range u.bits { - tmp.Exp(two, uint64(k)) - left = append(left, backend.Term{ID: b.WireID, Coeff: tmp}) + tmp.Exp(&two, new(big.Int).SetUint64(uint64(k)), nil) + left = append(left, ToRefactorTerm{ID: b.WireID, Coeff: tmp}) } // R - right := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: one}, + right := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: one}, } // O - o := backend.LinearExpression{ - backend.Term{ID: u.res.WireID, Coeff: one}, + o := LinearExpression{ + ToRefactorTerm{ID: u.res.WireID, Coeff: one}, } - return backend.R1C{L: left, R: right, O: o, Solver: backend.BinaryDec} + return R1C{L: left, R: right, O: o, Solver: BinaryDec} } func (u *unpackExpression) setConstraintID(n int64) { @@ -458,30 +456,30 @@ func (p *packExpression) replaceWire(oldWire, newWire *wire) { } } -func (p *packExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { - var two, tmp fr.Element - one := fr.One() +func (p *packExpression) toR1CS(constWire *wire, w ...*wire) R1C { + var two, tmp big.Int + one := bigOne() two.SetUint64(2) // L - left := backend.LinearExpression{} + left := LinearExpression{} for k, b := range p.bits { - tmp.Exp(two, uint64(k)) - lwtl := backend.Term{ID: b.WireID, Coeff: tmp} + tmp.Exp(&two, new(big.Int).SetUint64(uint64(k)), nil) + lwtl := ToRefactorTerm{ID: b.WireID, Coeff: tmp} left = append(left, lwtl) } // R - right := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: one}, + right := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: one}, } // O - o := backend.LinearExpression{ - backend.Term{ID: w[0].WireID, Coeff: one}, + o := LinearExpression{ + ToRefactorTerm{ID: w[0].WireID, Coeff: one}, } - return backend.R1C{L: left, R: right, O: o, Solver: backend.SingleOutput} + return R1C{L: left, R: right, O: o, Solver: SingleOutput} } func (p *packExpression) string() string { @@ -507,26 +505,26 @@ func (b *booleanExpression) replaceWire(oldWire, newWire *wire) { } } -func (b *booleanExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { +func (b *booleanExpression) toR1CS(constWire *wire, w ...*wire) R1C { - var minusOne, zero fr.Element - one := fr.One() + var minusOne, zero big.Int + one := bigOne() minusOne.Neg(&one) - L := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: one}, - backend.Term{ID: b.b.WireID, Coeff: minusOne}, + L := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: one}, + ToRefactorTerm{ID: b.b.WireID, Coeff: minusOne}, } - R := backend.LinearExpression{ - backend.Term{ID: b.b.WireID, Coeff: one}, + R := LinearExpression{ + ToRefactorTerm{ID: b.b.WireID, Coeff: one}, } - O := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: zero}, + O := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: zero}, } - return backend.R1C{L: L, R: R, O: O} + return R1C{L: L, R: R, O: O} } func (b *booleanExpression) string() string { @@ -538,31 +536,31 @@ func (b *booleanExpression) string() string { // eqConstExp wire is equal to a constant type eqConstantExpression struct { - v fr.Element + v big.Int } func (e *eqConstantExpression) consumeWires() {} func (e *eqConstantExpression) replaceWire(oldWire, newWire *wire) {} -func (e *eqConstantExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { +func (e *eqConstantExpression) toR1CS(constWire *wire, w ...*wire) R1C { // L - L := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: e.v}, + L := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: e.v}, } // R - R := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: fr.One()}, + R := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: bigOne()}, } // O - O := backend.LinearExpression{ - backend.Term{ID: w[0].WireID, Coeff: fr.One()}, + O := LinearExpression{ + ToRefactorTerm{ID: w[0].WireID, Coeff: bigOne()}, } - return backend.R1C{L: L, R: R, O: O, Solver: backend.SingleOutput} + return R1C{L: L, R: R, O: O, Solver: SingleOutput} } func (e *eqConstantExpression) string() string { @@ -587,27 +585,27 @@ func (i *implyExpression) replaceWire(oldWire, newWire *wire) { } } -func (i *implyExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { +func (i *implyExpression) toR1CS(constWire *wire, w ...*wire) R1C { - var one, minusOne, zero fr.Element - one.SetOne() + var one, minusOne, zero big.Int + one.SetUint64(1) minusOne.Neg(&one) - L := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: one}, - backend.Term{ID: i.b.WireID, Coeff: minusOne}, - backend.Term{ID: i.a.WireID, Coeff: minusOne}, + L := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: one}, + ToRefactorTerm{ID: i.b.WireID, Coeff: minusOne}, + ToRefactorTerm{ID: i.a.WireID, Coeff: minusOne}, } - R := backend.LinearExpression{ - backend.Term{ID: i.a.WireID, Coeff: one}, + R := LinearExpression{ + ToRefactorTerm{ID: i.a.WireID, Coeff: one}, } - O := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: zero}, + O := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: zero}, } - return backend.R1C{L: L, R: R, O: O, Solver: backend.SingleOutput} + return R1C{L: L, R: R, O: O, Solver: SingleOutput} } func (i *implyExpression) string() string { @@ -620,7 +618,7 @@ func (i *implyExpression) string() string { // cf https://z.cash/technology/jubjub/ type lutExpression struct { b0, b1 *wire - lookuptable [4]fr.Element + lookuptable [4]big.Int } func (win *lutExpression) consumeWires() { @@ -637,12 +635,12 @@ func (win *lutExpression) replaceWire(oldWire, newWire *wire) { } } -func (win *lutExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { - var t0, t1 fr.Element +func (win *lutExpression) toR1CS(constWire *wire, w ...*wire) R1C { + var t0, t1 big.Int // L - L := backend.LinearExpression{ - backend.Term{ID: win.b0.WireID, Coeff: fr.One()}, + L := LinearExpression{ + ToRefactorTerm{ID: win.b0.WireID, Coeff: bigOne()}, } t0.Neg(&win.lookuptable[0]). @@ -652,9 +650,9 @@ func (win *lutExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { Add(&t1, &win.lookuptable[3]) // R - R := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: t0}, - backend.Term{ID: win.b1.WireID, Coeff: t1}, + R := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: t0}, + ToRefactorTerm{ID: win.b1.WireID, Coeff: t1}, } t0.Neg(&win.lookuptable[0]) @@ -662,18 +660,18 @@ func (win *lutExpression) toR1CS(constWire *wire, w ...*wire) backend.R1C { t1.Sub(&t1, &win.lookuptable[2]) // O - O := backend.LinearExpression{ - backend.Term{ID: constWire.WireID, Coeff: t0}, - backend.Term{ID: win.b1.WireID, Coeff: t1}, - backend.Term{ID: w[0].WireID, Coeff: fr.One()}, + O := LinearExpression{ + ToRefactorTerm{ID: constWire.WireID, Coeff: t0}, + ToRefactorTerm{ID: win.b1.WireID, Coeff: t1}, + ToRefactorTerm{ID: w[0].WireID, Coeff: bigOne()}, } - return backend.R1C{L: L, R: R, O: O, Solver: backend.SingleOutput} + return R1C{L: L, R: R, O: O, Solver: SingleOutput} } func (win *lutExpression) string() string { - var lookuptablereg [4]fr.Element + var lookuptablereg [4]big.Int for i := 0; i < 4; i++ { lookuptablereg[i] = win.lookuptable[i] //.ToRegular() } diff --git a/frontend/r1cs.go b/frontend/r1cs.go new file mode 100644 index 000000000..462e7f133 --- /dev/null +++ b/frontend/r1cs.go @@ -0,0 +1,94 @@ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/internal/generators DO NOT EDIT + +package frontend + +import ( + "math/big" + "strconv" +) + +// R1CS decsribes a set of R1CS constraint +type R1CS struct { + // Wires + NbWires int + NbPublicWires int // includes ONE wire + NbPrivateWires int + PrivateWires []string // private wire names + PublicWires []string // public wire names + WireTags map[int][]string // optional tags -- debug info + + // Constraints + NbConstraints int // total number of constraints + NbCOConstraints int // number of constraints that need to be solved, the first of the Constraints slice + Constraints []R1C +} + +// method to solve a r1cs +type SolvingMethod uint8 + +const ( + SingleOutput SolvingMethod = iota + BinaryDec +) + +// Term ... +type ToRefactorTerm struct { + ID int64 // index of the constraint used to compute this wire + Coeff big.Int // coefficient by which the wire is multiplied +} + +// LinearExpression +type LinearExpression []ToRefactorTerm + +// R1C used to compute the wires +type R1C struct { + L LinearExpression + R LinearExpression + O LinearExpression + Solver SolvingMethod +} + +func bigOne() big.Int { + var val big.Int + val.SetUint64(1) + return val +} + +func FromInterface(i1 interface{}) big.Int { + var val big.Int + + switch c1 := i1.(type) { + case uint64: + val.SetUint64(c1) + case int: + if _, ok := val.SetString(strconv.Itoa(c1), 10); !ok { + panic("unable to set big.Int from base10 string") + } + case string: + if _, ok := val.SetString(c1, 10); !ok { + panic("unable to set big.Int from base10 string") + } + case big.Int: + val = c1 + case *big.Int: + val.Set(c1) + default: + panic("invalid type") + } + + return val +} From 1bf01be714affb89a0c93954b8d1f9fea0b0d27e Mon Sep 17 00:00:00 2001 From: Gautam Botrel Date: Thu, 2 Apr 2020 21:35:24 -0500 Subject: [PATCH 02/19] backend/: checkpoint refactoring --- backend/assignment.go | 38 +- .../{static/bls377/groth16 => bls377}/fft.go | 36 +- backend/{groth16 => bls377}/fft_test.go | 33 +- backend/{ => bls377}/groth16/computeh_test.go | 5 +- .../bls377/groth16/groth16_test.go | 20 +- backend/{static => }/bls377/groth16/prove.go | 29 +- backend/{static => }/bls377/groth16/setup.go | 29 +- backend/{static => }/bls377/groth16/verify.go | 10 +- backend/{static => }/bls377/r1cs.go | 39 +- .../{static/bls381/groth16 => bls381}/fft.go | 36 +- .../bls381/groth16/groth16_test.go | 20 +- backend/{static => }/bls381/groth16/prove.go | 29 +- backend/{static => }/bls381/groth16/setup.go | 29 +- backend/{static => }/bls381/groth16/verify.go | 10 +- backend/{static => }/bls381/r1cs.go | 39 +- .../{static/bn256/groth16 => bn256}/fft.go | 36 +- .../bn256/groth16/groth16_test.go | 20 +- backend/{static => }/bn256/groth16/prove.go | 29 +- backend/{static => }/bn256/groth16/setup.go | 29 +- backend/{static => }/bn256/groth16/verify.go | 10 +- backend/{static => }/bn256/r1cs.go | 39 +- backend/groth16/assert.go | 105 ------ backend/groth16/fft.go | 155 -------- backend/groth16/groth16_test.go | 188 ---------- backend/groth16/prove.go | 332 ------------------ backend/groth16/setup.go | 306 ---------------- .../groth16/testdata/bls377/constant_ops.bad | 2 - .../groth16/testdata/bls377/constant_ops.good | 2 - backend/groth16/testdata/bls377/div.bad | 3 - backend/groth16/testdata/bls377/div.good | 3 - backend/groth16/testdata/bls377/expo.bad | 3 - backend/groth16/testdata/bls377/expo.good | 3 - .../groth16/testdata/bls377/frombinary.bad | 5 - .../groth16/testdata/bls377/frombinary.good | 5 - backend/groth16/testdata/bls377/inv.bad | 2 - backend/groth16/testdata/bls377/inv.good | 2 - backend/groth16/testdata/bls377/lut00.bad | 3 - backend/groth16/testdata/bls377/lut00.good | 3 - backend/groth16/testdata/bls377/lut01.bad | 3 - backend/groth16/testdata/bls377/lut01.good | 3 - backend/groth16/testdata/bls377/lut10.bad | 3 - backend/groth16/testdata/bls377/lut10.good | 3 - backend/groth16/testdata/bls377/lut11.bad | 3 - backend/groth16/testdata/bls377/lut11.good | 3 - backend/groth16/testdata/bls377/range.bad | 2 - backend/groth16/testdata/bls377/range.good | 2 - backend/groth16/testdata/bls377/reference.bad | 2 - .../groth16/testdata/bls377/reference.good | 2 - .../testdata/bls377/reference_large.bad | 2 - .../testdata/bls377/reference_large.good | 2 - .../testdata/bls377/reference_small.bad | 2 - .../testdata/bls377/reference_small.good | 2 - backend/groth16/testdata/bls377/xor00.bad | 3 - backend/groth16/testdata/bls377/xor00.good | 3 - backend/groth16/testdata/bls377/xor01.bad | 3 - backend/groth16/testdata/bls377/xor01.good | 3 - backend/groth16/testdata/bls377/xor10.bad | 3 - backend/groth16/testdata/bls377/xor10.good | 3 - backend/groth16/testdata/bls377/xor11.bad | 3 - backend/groth16/testdata/bls377/xor11.good | 3 - .../groth16/testdata/bls381/constant_ops.bad | 2 - .../groth16/testdata/bls381/constant_ops.good | 2 - backend/groth16/testdata/bls381/div.bad | 3 - backend/groth16/testdata/bls381/div.good | 3 - backend/groth16/testdata/bls381/expo.bad | 3 - backend/groth16/testdata/bls381/expo.good | 3 - .../groth16/testdata/bls381/frombinary.bad | 5 - .../groth16/testdata/bls381/frombinary.good | 5 - backend/groth16/testdata/bls381/inv.bad | 2 - backend/groth16/testdata/bls381/inv.good | 2 - backend/groth16/testdata/bls381/lut00.bad | 3 - backend/groth16/testdata/bls381/lut00.good | 3 - backend/groth16/testdata/bls381/lut01.bad | 3 - backend/groth16/testdata/bls381/lut01.good | 3 - backend/groth16/testdata/bls381/lut10.bad | 3 - backend/groth16/testdata/bls381/lut10.good | 3 - backend/groth16/testdata/bls381/lut11.bad | 3 - backend/groth16/testdata/bls381/lut11.good | 3 - backend/groth16/testdata/bls381/range.bad | 2 - backend/groth16/testdata/bls381/range.good | 2 - backend/groth16/testdata/bls381/reference.bad | 2 - .../groth16/testdata/bls381/reference.good | 2 - .../testdata/bls381/reference_large.bad | 2 - .../testdata/bls381/reference_large.good | 2 - .../testdata/bls381/reference_small.bad | 2 - .../testdata/bls381/reference_small.good | 2 - backend/groth16/testdata/bls381/xor00.bad | 3 - backend/groth16/testdata/bls381/xor00.good | 3 - backend/groth16/testdata/bls381/xor01.bad | 3 - backend/groth16/testdata/bls381/xor01.good | 3 - backend/groth16/testdata/bls381/xor10.bad | 3 - backend/groth16/testdata/bls381/xor10.good | 3 - backend/groth16/testdata/bls381/xor11.bad | 3 - backend/groth16/testdata/bls381/xor11.good | 3 - .../groth16/testdata/bn256/constant_ops.bad | 2 - .../groth16/testdata/bn256/constant_ops.good | 2 - backend/groth16/testdata/bn256/div.bad | 3 - backend/groth16/testdata/bn256/div.good | 3 - backend/groth16/testdata/bn256/expo.bad | 3 - backend/groth16/testdata/bn256/expo.good | 3 - backend/groth16/testdata/bn256/frombinary.bad | 5 - .../groth16/testdata/bn256/frombinary.good | 5 - backend/groth16/testdata/bn256/inv.bad | 2 - backend/groth16/testdata/bn256/inv.good | 2 - backend/groth16/testdata/bn256/lut00.bad | 3 - backend/groth16/testdata/bn256/lut00.good | 3 - backend/groth16/testdata/bn256/lut01.bad | 3 - backend/groth16/testdata/bn256/lut01.good | 3 - backend/groth16/testdata/bn256/lut10.bad | 3 - backend/groth16/testdata/bn256/lut10.good | 3 - backend/groth16/testdata/bn256/lut11.bad | 3 - backend/groth16/testdata/bn256/lut11.good | 3 - backend/groth16/testdata/bn256/range.bad | 2 - backend/groth16/testdata/bn256/range.good | 2 - backend/groth16/testdata/bn256/reference.bad | 2 - backend/groth16/testdata/bn256/reference.good | 2 - .../testdata/bn256/reference_large.bad | 2 - .../testdata/bn256/reference_large.good | 2 - .../testdata/bn256/reference_small.bad | 2 - .../testdata/bn256/reference_small.good | 2 - backend/groth16/testdata/bn256/xor00.bad | 3 - backend/groth16/testdata/bn256/xor00.good | 3 - backend/groth16/testdata/bn256/xor01.bad | 3 - backend/groth16/testdata/bn256/xor01.good | 3 - backend/groth16/testdata/bn256/xor10.bad | 3 - backend/groth16/testdata/bn256/xor10.good | 3 - backend/groth16/testdata/bn256/xor11.bad | 3 - backend/groth16/testdata/bn256/xor11.good | 3 - backend/groth16/verify.go | 91 ----- backend/r1cs.go | 310 ---------------- backend/static/bls377/assignment.go | 130 ------- backend/static/bls381/assignment.go | 130 ------- backend/static/bn256/assignment.go | 130 ------- internal/generators/backend/main.go | 12 +- .../backend/template/algorithms/fft.go | 34 +- .../backend/template/generator/generator.go | 28 +- .../backend/template/import_curve.go | 8 +- .../template/representations/assignment.go | 121 ------- .../backend/template/representations/r1cs.go | 37 +- .../template/zkpschemes/groth16_assert.go | 4 +- .../template/zkpschemes/groth16_prove.go | 27 +- .../template/zkpschemes/groth16_setup.go | 27 +- .../template/zkpschemes/groth16_verify.go | 8 +- .../template/zkpschemes/tests_groth16.go | 14 +- .../testcircuits/circuits/circuits.go | 5 +- .../generators/testcircuits/circuits/lut00.go | 5 +- .../generators/testcircuits/circuits/lut01.go | 5 +- .../generators/testcircuits/circuits/lut10.go | 5 +- .../generators/testcircuits/circuits/lut11.go | 5 +- 149 files changed, 454 insertions(+), 2615 deletions(-) rename backend/{static/bls377/groth16 => bls377}/fft.go (80%) rename backend/{groth16 => bls377}/fft_test.go (85%) rename backend/{ => bls377}/groth16/computeh_test.go (96%) rename backend/{static => }/bls377/groth16/groth16_test.go (92%) rename backend/{static => }/bls377/groth16/prove.go (90%) rename backend/{static => }/bls377/groth16/setup.go (90%) rename backend/{static => }/bls377/groth16/verify.go (90%) rename backend/{static => }/bls377/r1cs.go (89%) rename backend/{static/bls381/groth16 => bls381}/fft.go (80%) rename backend/{static => }/bls381/groth16/groth16_test.go (92%) rename backend/{static => }/bls381/groth16/prove.go (90%) rename backend/{static => }/bls381/groth16/setup.go (90%) rename backend/{static => }/bls381/groth16/verify.go (90%) rename backend/{static => }/bls381/r1cs.go (89%) rename backend/{static/bn256/groth16 => bn256}/fft.go (80%) rename backend/{static => }/bn256/groth16/groth16_test.go (92%) rename backend/{static => }/bn256/groth16/prove.go (90%) rename backend/{static => }/bn256/groth16/setup.go (90%) rename backend/{static => }/bn256/groth16/verify.go (90%) rename backend/{static => }/bn256/r1cs.go (89%) delete mode 100644 backend/groth16/assert.go delete mode 100644 backend/groth16/fft.go delete mode 100644 backend/groth16/groth16_test.go delete mode 100644 backend/groth16/prove.go delete mode 100644 backend/groth16/setup.go delete mode 100644 backend/groth16/testdata/bls377/constant_ops.bad delete mode 100644 backend/groth16/testdata/bls377/constant_ops.good delete mode 100644 backend/groth16/testdata/bls377/div.bad delete mode 100644 backend/groth16/testdata/bls377/div.good delete mode 100644 backend/groth16/testdata/bls377/expo.bad delete mode 100644 backend/groth16/testdata/bls377/expo.good delete mode 100644 backend/groth16/testdata/bls377/frombinary.bad delete mode 100644 backend/groth16/testdata/bls377/frombinary.good delete mode 100644 backend/groth16/testdata/bls377/inv.bad delete mode 100644 backend/groth16/testdata/bls377/inv.good delete mode 100644 backend/groth16/testdata/bls377/lut00.bad delete mode 100644 backend/groth16/testdata/bls377/lut00.good delete mode 100644 backend/groth16/testdata/bls377/lut01.bad delete mode 100644 backend/groth16/testdata/bls377/lut01.good 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backend/groth16/testdata/bn256/reference_small.bad delete mode 100644 backend/groth16/testdata/bn256/reference_small.good delete mode 100644 backend/groth16/testdata/bn256/xor00.bad delete mode 100644 backend/groth16/testdata/bn256/xor00.good delete mode 100644 backend/groth16/testdata/bn256/xor01.bad delete mode 100644 backend/groth16/testdata/bn256/xor01.good delete mode 100644 backend/groth16/testdata/bn256/xor10.bad delete mode 100644 backend/groth16/testdata/bn256/xor10.good delete mode 100644 backend/groth16/testdata/bn256/xor11.bad delete mode 100644 backend/groth16/testdata/bn256/xor11.good delete mode 100644 backend/groth16/verify.go delete mode 100644 backend/r1cs.go delete mode 100644 backend/static/bls377/assignment.go delete mode 100644 backend/static/bls381/assignment.go delete mode 100644 backend/static/bn256/assignment.go delete mode 100644 internal/generators/backend/template/representations/assignment.go diff --git a/backend/assignment.go b/backend/assignment.go index d19b9ddde..56ef93533 100644 --- a/backend/assignment.go +++ b/backend/assignment.go @@ -12,23 +12,21 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/internal/generators DO NOT EDIT - package backend import ( "bufio" "encoding/csv" "io" + "math/big" "os" + "strconv" "strings" - - "github.com/consensys/gnark/curve/fr" ) // Assignment is used to specify inputs to the Prove and Verify functions type Assignment struct { - Value fr.Element + Value big.Int IsPublic bool // default == false (assignemnt is private) } @@ -47,10 +45,10 @@ func (a Assignments) Assign(visibility Visibility, name string, v interface{}) { } switch visibility { case Secret: - a[name] = Assignment{Value: fr.FromInterface(v)} + a[name] = Assignment{Value: FromInterface(v)} case Public: a[name] = Assignment{ - Value: fr.FromInterface(v), + Value: FromInterface(v), IsPublic: true, } default: @@ -126,3 +124,29 @@ func (assignments Assignments) DiscardSecrets() Assignments { } return toReturn } + +// TODO duplicate with frontend R1CS +func FromInterface(i1 interface{}) big.Int { + var val big.Int + + switch c1 := i1.(type) { + case uint64: + val.SetUint64(c1) + case int: + if _, ok := val.SetString(strconv.Itoa(c1), 10); !ok { + panic("unable to set big.Int from base10 string") + } + case string: + if _, ok := val.SetString(c1, 10); !ok { + panic("unable to set big.Int from base10 string") + } + case big.Int: + val = c1 + case *big.Int: + val.Set(c1) + default: + panic("invalid type") + } + + return val +} diff --git a/backend/static/bls377/groth16/fft.go b/backend/bls377/fft.go similarity index 80% rename from backend/static/bls377/groth16/fft.go rename to backend/bls377/fft.go index 36fecdc17..8a30cfa42 100644 --- a/backend/static/bls377/groth16/fft.go +++ b/backend/bls377/fft.go @@ -14,7 +14,7 @@ // Code generated by gnark/internal/generators DO NOT EDIT -package groth16 +package backend_bls377 import ( "math/bits" @@ -24,11 +24,11 @@ import ( "github.com/consensys/gurvy/bls377/fr" ) -// fft computes the discrete Fourier transform of a and stores the result in a. +// FFT computes the discrete Fourier transform of a and stores the result in a. // The result is in bit-reversed order. // len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. // The algorithm is recursive, decimation-in-frequency. [cite] -func fft(a []fr.Element, w fr.Element) { +func FFT(a []fr.Element, w fr.Element) { var wg sync.WaitGroup asyncFFT(a, w, &wg, 1) wg.Wait() @@ -106,21 +106,21 @@ func bitReverse(a []fr.Element) { // domain with a power of 2 cardinality // compute a field element of order 2x and store it in GeneratorSqRt // all other values can be derived from x, GeneratorSqrt -type domain struct { - generator fr.Element - generatorInv fr.Element - generatorSqRt fr.Element // generator of 2 adic subgroup of order 2*nb_constraints - generatorSqRtInv fr.Element - cardinality int - cardinalityInv fr.Element +type Domain struct { + Generator fr.Element + GeneratorInv fr.Element + GeneratorSqRt fr.Element // generator of 2 adic subgroup of order 2*nb_constraints + GeneratorSqRtInv fr.Element + Cardinality int + CardinalityInv fr.Element } // newDomain returns a subgroup with a power of 2 cardinality // cardinality >= m // compute a field element of order 2x and store it in GeneratorSqRt // all other values can be derived from x, GeneratorSqrt -func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { - subGroup := &domain{} +func NewDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *Domain { + subGroup := &Domain{} x := nextPowerOfTwo(uint(m)) // maxOderRoot is the largest power-of-two order for any element in the field @@ -131,14 +131,14 @@ func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { panic("m is too big: the required root of unity does not exist") } expo := uint64(1 << (maxOrderRoot - logx - 1)) - subGroup.generatorSqRt.Exp(rootOfUnity, expo) + subGroup.GeneratorSqRt.Exp(rootOfUnity, expo) // Generator = GeneratorSqRt^2 has order x - subGroup.generator.Mul(&subGroup.generatorSqRt, &subGroup.generatorSqRt) // order x - subGroup.cardinality = int(x) - subGroup.generatorSqRtInv.Inverse(&subGroup.generatorSqRt) - subGroup.generatorInv.Inverse(&subGroup.generator) - subGroup.cardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.cardinalityInv) + subGroup.Generator.Mul(&subGroup.GeneratorSqRt, &subGroup.GeneratorSqRt) // order x + subGroup.Cardinality = int(x) + subGroup.GeneratorSqRtInv.Inverse(&subGroup.GeneratorSqRt) + subGroup.GeneratorInv.Inverse(&subGroup.Generator) + subGroup.CardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.CardinalityInv) return subGroup } diff --git a/backend/groth16/fft_test.go b/backend/bls377/fft_test.go similarity index 85% rename from backend/groth16/fft_test.go rename to backend/bls377/fft_test.go index 568c8402d..4bc26da4d 100644 --- a/backend/groth16/fft_test.go +++ b/backend/bls377/fft_test.go @@ -16,7 +16,7 @@ See the License for the specific language governing permissions and limitations under the License. */ -package groth16 +package backend_bls377 import ( "testing" @@ -24,6 +24,9 @@ import ( "github.com/consensys/gnark/curve/fr" ) +const RootOfUnityStr = fr.RootOfUnityStr +const MaxOrder = fr.MaxOrder + func TestFFT(t *testing.T) { var w, winv fr.Element @@ -47,7 +50,7 @@ func TestFFT(t *testing.T) { fftExpected[1].SetString("176691886079129423236139828277131126232163084109021849887887564") fftExpected[2].SetString("8444461749428370424248824938781546531375899335154063827935233455917408882477") fftExpected[3].SetString("8444461749428193732362745809358310391547622204027831664851124434067521319365") - fft(poly, w) + FFT(poly, w) for i := 0; i < 4; i++ { if !poly[i].Equal(&fftExpected[i]) { @@ -90,16 +93,16 @@ func BenchmarkFFT(b *testing.B) { rootOfUnity.SetString(RootOfUnityStr) const nbGates = 500000 - subGroup := newDomain(rootOfUnity, MaxOrder, nbGates) + subGroup := NewDomain(rootOfUnity, MaxOrder, nbGates) - a := make([]fr.Element, subGroup.cardinality) + a := make([]fr.Element, subGroup.Cardinality) for i := 0; i < len(a); i++ { a[i].SetRandom() } b.ResetTimer() for i := 0; i < b.N; i++ { - fft(a, subGroup.generator) + FFT(a, subGroup.Generator) } } @@ -115,18 +118,18 @@ func TestNewDomain(t *testing.T) { for i := uint(0); i < uint(25); i++ { m := 1 << i // m = 2^i - S := newDomain(rootOfUnity, MaxOrder, m) + S := NewDomain(rootOfUnity, MaxOrder, m) // test S.GeneratorSqRt^2 == S.Generator var generatorSqRtSq fr.Element - generatorSqRtSq.Mul(&S.generatorSqRt, &S.generatorSqRt) - if generatorSqRtSq != S.generator { + generatorSqRtSq.Mul(&S.GeneratorSqRt, &S.GeneratorSqRt) + if generatorSqRtSq != S.Generator { t.Error("GeneratorSqRt^2 != Generator") } // test order of S.Generator var generatorPow fr.Element - generatorPow.Set(&S.generator) + generatorPow.Set(&S.Generator) for j := uint(0); j < i; j++ { if generatorPow.Equal(&one) { t.Error("Generator order too small: expected:", m, "received:", 1<= m // compute a field element of order 2x and store it in GeneratorSqRt // all other values can be derived from x, GeneratorSqrt -func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { - subGroup := &domain{} +func NewDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *Domain { + subGroup := &Domain{} x := nextPowerOfTwo(uint(m)) // maxOderRoot is the largest power-of-two order for any element in the field @@ -131,14 +131,14 @@ func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { panic("m is too big: the required root of unity does not exist") } expo := uint64(1 << (maxOrderRoot - logx - 1)) - subGroup.generatorSqRt.Exp(rootOfUnity, expo) + subGroup.GeneratorSqRt.Exp(rootOfUnity, expo) // Generator = GeneratorSqRt^2 has order x - subGroup.generator.Mul(&subGroup.generatorSqRt, &subGroup.generatorSqRt) // order x - subGroup.cardinality = int(x) - subGroup.generatorSqRtInv.Inverse(&subGroup.generatorSqRt) - subGroup.generatorInv.Inverse(&subGroup.generator) - subGroup.cardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.cardinalityInv) + subGroup.Generator.Mul(&subGroup.GeneratorSqRt, &subGroup.GeneratorSqRt) // order x + subGroup.Cardinality = int(x) + subGroup.GeneratorSqRtInv.Inverse(&subGroup.GeneratorSqRt) + subGroup.GeneratorInv.Inverse(&subGroup.Generator) + subGroup.CardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.CardinalityInv) return subGroup } diff --git a/backend/static/bls381/groth16/groth16_test.go b/backend/bls381/groth16/groth16_test.go similarity index 92% rename from backend/static/bls381/groth16/groth16_test.go rename to backend/bls381/groth16/groth16_test.go index 738c500b8..7cf05c7e9 100644 --- a/backend/static/bls381/groth16/groth16_test.go +++ b/backend/bls381/groth16/groth16_test.go @@ -20,14 +20,14 @@ import ( curve "github.com/consensys/gurvy/bls381" "github.com/consensys/gurvy/bls381/fr" - "github.com/consensys/gnark/backend/static/bls381" + backend_bls381 "github.com/consensys/gnark/backend/bls381" "path/filepath" "runtime/debug" "strings" "testing" - constants "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/internal/utils/encoding/gob" "reflect" @@ -59,7 +59,7 @@ func TestCircuits(t *testing.T) { if err := bad.ReadFile(name + ".bad"); err != nil { t.Fatal(err) } - var r1cs backend.R1CS + var r1cs backend_bls381.R1CS if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { t.Fatal(err) @@ -74,13 +74,13 @@ func TestParsePublicInput(t *testing.T) { expectedNames := [2]string{"data", "ONE_WIRE"} inputOneWire := backend.NewAssignment() - inputOneWire.Assign(constants.Public, "ONE_WIRE", 3) + inputOneWire.Assign(backend.Public, "ONE_WIRE", 3) if _, err := parsePublicInput(expectedNames[:], inputOneWire); err == nil { t.Fatal("expected ErrMissingAssigment error") } inputPrivate := backend.NewAssignment() - inputPrivate.Assign(constants.Secret, "data", 3) + inputPrivate.Assign(backend.Secret, "data", 3) if _, err := parsePublicInput(expectedNames[:], inputPrivate); err == nil { t.Fatal("expected ErrMissingAssigment error") } @@ -91,7 +91,7 @@ func TestParsePublicInput(t *testing.T) { } correctInput := backend.NewAssignment() - correctInput.Assign(constants.Public, "data", 3) + correctInput.Assign(backend.Public, "data", 3) got, err := parsePublicInput(expectedNames[:], correctInput) if err != nil { t.Fatal(err) @@ -115,7 +115,7 @@ func TestParsePublicInput(t *testing.T) { // benches // //--------------------// -func referenceCircuit() (backend.R1CS, backend.Assignments, backend.Assignments) { +func referenceCircuit() (backend_bls381.R1CS, backend.Assignments, backend.Assignments) { name := "../../../../backend/groth16/testdata/" + strings.ToLower(curve.ID.String()) + "/reference_large" @@ -127,7 +127,7 @@ func referenceCircuit() (backend.R1CS, backend.Assignments, backend.Assignments) if err := bad.ReadFile(name + ".bad"); err != nil { panic(err) } - var r1cs backend.R1CS + var r1cs backend_bls381.R1CS if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { panic(err) @@ -207,7 +207,7 @@ func NewAssert(t *testing.T) *Assert { // NotSolved check that a solution does NOT solve a circuit // error may be missing inputs or unsatisfied constraints // it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend.R1CS, solution backend.Assignments) { +func (assert *Assert) NotSolved(r1cs *backend_bls381.R1CS, solution backend.Assignments) { // setup var pk ProvingKey @@ -223,7 +223,7 @@ func (assert *Assert) NotSolved(r1cs *backend.R1CS, solution backend.Assignments // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c // it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { +func (assert *Assert) Solved(r1cs *backend_bls381.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { // setup var pk ProvingKey diff --git a/backend/static/bls381/groth16/prove.go b/backend/bls381/groth16/prove.go similarity index 90% rename from backend/static/bls381/groth16/prove.go rename to backend/bls381/groth16/prove.go index fcf14255d..75f39072d 100644 --- a/backend/static/bls381/groth16/prove.go +++ b/backend/bls381/groth16/prove.go @@ -20,11 +20,12 @@ import ( curve "github.com/consensys/gurvy/bls381" "github.com/consensys/gurvy/bls381/fr" - "github.com/consensys/gnark/backend/static/bls381" + backend_bls381 "github.com/consensys/gnark/backend/bls381" "runtime" "sync" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/internal/utils/debug" "github.com/consensys/gnark/internal/utils/parallel" ) @@ -49,11 +50,11 @@ func init() { } // Prove creates proof from a circuit -func Prove(r1cs *backend.R1CS, pk *ProvingKey, solution backend.Assignments) (*Proof, error) { +func Prove(r1cs *backend_bls381.R1CS, pk *ProvingKey, solution backend.Assignments) (*Proof, error) { proof := &Proof{} // fft domain (computeH) - fftDomain := newDomain(root, MaxOrder, r1cs.NbConstraints) + fftDomain := backend_bls381.NewDomain(root, MaxOrder, r1cs.NbConstraints) // sample random r and s var r, s, _r, _s fr.Element @@ -64,9 +65,9 @@ func Prove(r1cs *backend.R1CS, pk *ProvingKey, solution backend.Assignments) (*P // Solve the R1CS and compute the a, b, c vectors wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) err := r1cs.Solve(solution, a, b, c, wireValues) if err != nil { return nil, err @@ -195,7 +196,7 @@ func computeAr1(pk *ProvingKey, _r fr.Element, wireValues []fr.Element, chToken return chResult } -func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { +func computeH(a, b, c []fr.Element, fftDomain *backend_bls381.Domain) <-chan []fr.Element { chResult := make(chan []fr.Element, 1) go func() { // H part of Krs @@ -208,7 +209,7 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { debug.Assert((n == len(b)) && (n == len(c))) // add padding - padding := make([]fr.Element, fftDomain.cardinality-n) + padding := make([]fr.Element, fftDomain.Cardinality-n) a = append(a, padding...) b = append(b, padding...) c = append(c, padding...) @@ -223,18 +224,18 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { // expTable[2] = fftDomain.GeneratorSqrt^2 * fftDomain.CardinalityInv // ... expTable := make([]fr.Element, n) - expTable[0] = fftDomain.cardinalityInv + expTable[0] = fftDomain.CardinalityInv var wgExpTable sync.WaitGroup // to ensure the pool is busy while the FFT splits, we schedule precomputation of the exp table // before the FFTs - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRt, expTable, &wgExpTable) + asyncExpTable(fftDomain.CardinalityInv, fftDomain.GeneratorSqRt, expTable, &wgExpTable) var wg sync.WaitGroup FFTa := func(s []fr.Element) { // FFT inverse - fft(s, fftDomain.generatorInv) + backend_bls381.FFT(s, fftDomain.GeneratorInv) // wait for the expTable to be pre-computed // in the nominal case, this is non-blocking as the expTable was scheduled before the FFT @@ -246,7 +247,7 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { }) // FFT coset - fft(s, fftDomain.generator) + backend_bls381.FFT(s, fftDomain.Generator) wg.Done() } wg.Add(3) @@ -273,10 +274,10 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { // expTable[0] = fftDomain.CardinalityInv // expTable[1] = fftDomain.GeneratorSqRtInv^1 * fftDomain.CardinalityInv // expTable[2] = fftDomain.GeneratorSqRtInv^2 * fftDomain.CardinalityInv - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRtInv, expTable, &wgExpTable) + asyncExpTable(fftDomain.CardinalityInv, fftDomain.GeneratorSqRtInv, expTable, &wgExpTable) // ifft_coset - fft(a, fftDomain.generatorInv) + backend_bls381.FFT(a, fftDomain.GeneratorInv) wgExpTable.Wait() // wait for pre-computation of exp table to be done parallel.Execute(n, func(start, end int) { diff --git a/backend/static/bls381/groth16/setup.go b/backend/bls381/groth16/setup.go similarity index 90% rename from backend/static/bls381/groth16/setup.go rename to backend/bls381/groth16/setup.go index 5d6e89039..0c15acf81 100644 --- a/backend/static/bls381/groth16/setup.go +++ b/backend/bls381/groth16/setup.go @@ -14,7 +14,6 @@ // Code generated by gnark/internal/generators DO NOT EDIT -// Package groth16 exposes zkSNARK (Groth16) 3 algorithms: Setup, Prove and Verify package groth16 import ( @@ -23,7 +22,7 @@ import ( "github.com/consensys/gnark/internal/utils/parallel" - "github.com/consensys/gnark/backend/static/bls381" + backend_bls381 "github.com/consensys/gnark/backend/bls381" ) const RootOfUnityStr = "10238227357739495823651030575849232062558860180284477541189508159991286009131" @@ -67,7 +66,7 @@ type VerifyingKey struct { } // Setup constructs the SRS -func Setup(r1cs *backend.R1CS, pk *ProvingKey, vk *VerifyingKey) { +func Setup(r1cs *backend_bls381.R1CS, pk *ProvingKey, vk *VerifyingKey) { /* Setup @@ -85,13 +84,13 @@ func Setup(r1cs *backend.R1CS, pk *ProvingKey, vk *VerifyingKey) { nbConstraints := r1cs.NbConstraints // Setting group for fft - gateGroup := newDomain(root, MaxOrder, nbConstraints) + gateGroup := backend_bls381.NewDomain(root, MaxOrder, nbConstraints) // initialize proving key pk.G1.A = make([]curve.G1Affine, nbWires) pk.G1.B = make([]curve.G1Affine, nbWires) pk.G1.K = make([]curve.G1Affine, r1cs.NbWires-r1cs.NbPublicWires) - pk.G1.Z = make([]curve.G1Affine, gateGroup.cardinality) + pk.G1.Z = make([]curve.G1Affine, gateGroup.Cardinality) pk.G2.B = make([]curve.G2Affine, nbWires) // initialize verifying key @@ -174,7 +173,7 @@ func setupToxicWaste(pk *ProvingKey, vk *VerifyingKey, tw toxicWaste) { } -func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { +func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *backend_bls381.Domain) { c := curve.BLS381() @@ -183,18 +182,18 @@ func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { var zdt fr.Element - zdt.Exp(tw.t, uint64(g.cardinality)). + zdt.Exp(tw.t, uint64(g.Cardinality)). Sub(&zdt, &one). Div(&zdt, &tw.delta) // sets Zdt to Zdt/delta - Zdt := make([]fr.Element, g.cardinality) - for i := 0; i < g.cardinality; i++ { + Zdt := make([]fr.Element, g.Cardinality) + for i := 0; i < g.Cardinality; i++ { Zdt[i] = zdt.ToRegular() zdt.MulAssign(&tw.t) } // Z(t) = [(t^j*Zd(t) / delta)] - parallel.Execute(g.cardinality, func(start, end int) { + parallel.Execute(g.Cardinality, func(start, end int) { var pkG1Z curve.G1Jac for j := start; j < end; j++ { pkG1Z.ScalarMulByGen(c, Zdt[j]) @@ -204,7 +203,7 @@ func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { } -func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B []fr.Element, C []fr.Element) { +func setupABC(r1cs *backend_bls381.R1CS, g *backend_bls381.Domain, tw toxicWaste) (A []fr.Element, B []fr.Element, C []fr.Element) { nbWires := r1cs.NbWires @@ -220,16 +219,16 @@ func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B [ // L0 = 1/n*(t^n-1)/(t-1), Li+1 = w*Li*(t-w^i)/(t-w^(i+1)) var w, wi, tmp fr.Element - w.Set(&g.generator) + w.Set(&g.Generator) wi.SetOne() // Setting L0 ithLagrangePolt.Set(&tw.t) - ithLagrangePolt.Exp(ithLagrangePolt, uint64(g.cardinality)). + ithLagrangePolt.Exp(ithLagrangePolt, uint64(g.Cardinality)). Sub(&ithLagrangePolt, &one) tmp.Set(&tw.t).Sub(&tmp, &one) ithLagrangePolt.Div(&ithLagrangePolt, &tmp). - Mul(&ithLagrangePolt, &g.cardinalityInv) + Mul(&ithLagrangePolt, &g.CardinalityInv) // Constraints for _, c := range r1cs.Constraints { @@ -259,7 +258,7 @@ func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B [ } -func setupKeyVectors(A, B, C []fr.Element, pk *ProvingKey, vk *VerifyingKey, tw toxicWaste, r1cs *backend.R1CS) { +func setupKeyVectors(A, B, C []fr.Element, pk *ProvingKey, vk *VerifyingKey, tw toxicWaste, r1cs *backend_bls381.R1CS) { c := curve.BLS381() diff --git a/backend/static/bls381/groth16/verify.go b/backend/bls381/groth16/verify.go similarity index 90% rename from backend/static/bls381/groth16/verify.go rename to backend/bls381/groth16/verify.go index 7d74996f5..7f218bb58 100644 --- a/backend/static/bls381/groth16/verify.go +++ b/backend/bls381/groth16/verify.go @@ -20,9 +20,7 @@ import ( curve "github.com/consensys/gurvy/bls381" "github.com/consensys/gurvy/bls381/fr" - "github.com/consensys/gnark/backend/static/bls381" - - constants "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/backend" ) // Verify verifies a proof @@ -74,15 +72,15 @@ func parsePublicInput(expectedNames []string, input backend.Assignments) ([]fr.E publicInput := input.DiscardSecrets() for i := 0; i < len(expectedNames); i++ { - if expectedNames[i] == constants.OneWire { + if expectedNames[i] == backend.OneWire { // ONE_WIRE is a reserved name, it should not be set by the user toReturn[i].SetOne() toReturn[i].FromMont() } else { if val, ok := publicInput[expectedNames[i]]; ok { - toReturn[i] = val.Value.ToRegular() + toReturn[i].SetBigInt(&val.Value).FromMont() } else { - return nil, constants.ErrInputNotSet + return nil, backend.ErrInputNotSet } } } diff --git a/backend/static/bls381/r1cs.go b/backend/bls381/r1cs.go similarity index 89% rename from backend/static/bls381/r1cs.go rename to backend/bls381/r1cs.go index 94dcb94ff..401a67fbe 100644 --- a/backend/static/bls381/r1cs.go +++ b/backend/bls381/r1cs.go @@ -14,7 +14,7 @@ // Code generated by gnark/internal/generators DO NOT EDIT -package backend +package backend_bls381 import ( "fmt" @@ -24,6 +24,7 @@ import ( "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" "github.com/consensys/gnark/internal/utils/encoding/gob" ) @@ -44,12 +45,38 @@ type R1CS struct { Constraints []R1C } +// New return a typed R1CS with the curve from frontend.R1CS +func New(r1cs *frontend.R1CS) R1CS { + toReturn := R1CS{ + NbWires: r1cs.NbWires, + NbPublicWires: r1cs.NbPublicWires, + NbPrivateWires: r1cs.NbPrivateWires, + PrivateWires: r1cs.PrivateWires, + PublicWires: r1cs.PublicWires, + WireTags: r1cs.WireTags, + NbConstraints: r1cs.NbConstraints, + NbCOConstraints: r1cs.NbCOConstraints, + } + toReturn.Constraints = make([]R1C, len(r1cs.Constraints)) + for i := 0; i < len(r1cs.Constraints); i++ { + from := r1cs.Constraints[i] + toReturn.Constraints[i] = R1C{ + Solver: from.Solver, + L: make(LinearExpression, len(from.L)), + R: make(LinearExpression, len(from.R)), + O: make(LinearExpression, len(from.O)), + } + + } + return toReturn +} + // Solve sets all the wires and returns the a, b, c vectors. // the r1cs system should have been compiled before. The entries in a, b, c are in Montgomery form. // assignment: map[string]value: contains the input variables // a, b, c vectors: ab-c = hz // wireValues = [intermediateVariables | privateInputs | publicInputs] -func (r1cs *R1CS) Solve(assignment Assignments, a, b, c, wireValues []fr.Element) error { +func (r1cs *R1CS) Solve(assignment backend.Assignments, a, b, c, wireValues []fr.Element) error { // compute the wires and the a, b, c polynomials debug.Assert(len(a) == r1cs.NbConstraints) @@ -72,7 +99,7 @@ func (r1cs *R1CS) Solve(assignment Assignments, a, b, c, wireValues []fr.Element if visibility == backend.Secret && val.IsPublic || visibility == backend.Public && !val.IsPublic { return fmt.Errorf("%q: %w", name, backend.ErrInputVisiblity) } - wireValues[i+offset].Set(&val.Value) + wireValues[i+offset].SetBigInt(&val.Value) wireInstantiated[i+offset] = true } else { return fmt.Errorf("%q: %w", name, backend.ErrInputNotSet) @@ -171,7 +198,7 @@ type R1C struct { L LinearExpression R LinearExpression O LinearExpression - Solver solvingMethod + Solver frontend.SolvingMethod } // compute left, right, o part of a r1cs constraint @@ -212,7 +239,7 @@ func (r1c *R1C) solveR1c(wireInstantiated []bool, wireValues []fr.Element) { switch r1c.Solver { // in this case we solve a R1C by isolating the uncomputed wire - case SingleOutput: + case frontend.SingleOutput: // the index of the non zero entry shows if L, R or O has an uninstantiated wire // the content is the ID of the wire non instantiated @@ -282,7 +309,7 @@ func (r1c *R1C) solveR1c(wireInstantiated []bool, wireValues []fr.Element) { // in the case the R1C is solved by directly computing the binary decomposition // of the variable - case BinaryDec: + case frontend.BinaryDec: // the binary decomposition must be called on the non Mont form of the number n := wireValues[r1c.O[0].ID].ToRegular() diff --git a/backend/static/bn256/groth16/fft.go b/backend/bn256/fft.go similarity index 80% rename from backend/static/bn256/groth16/fft.go rename to backend/bn256/fft.go index 0981498f3..8c3e8cdbf 100644 --- a/backend/static/bn256/groth16/fft.go +++ b/backend/bn256/fft.go @@ -14,7 +14,7 @@ // Code generated by gnark/internal/generators DO NOT EDIT -package groth16 +package backend_bn256 import ( "math/bits" @@ -24,11 +24,11 @@ import ( "github.com/consensys/gurvy/bn256/fr" ) -// fft computes the discrete Fourier transform of a and stores the result in a. +// FFT computes the discrete Fourier transform of a and stores the result in a. // The result is in bit-reversed order. // len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. // The algorithm is recursive, decimation-in-frequency. [cite] -func fft(a []fr.Element, w fr.Element) { +func FFT(a []fr.Element, w fr.Element) { var wg sync.WaitGroup asyncFFT(a, w, &wg, 1) wg.Wait() @@ -106,21 +106,21 @@ func bitReverse(a []fr.Element) { // domain with a power of 2 cardinality // compute a field element of order 2x and store it in GeneratorSqRt // all other values can be derived from x, GeneratorSqrt -type domain struct { - generator fr.Element - generatorInv fr.Element - generatorSqRt fr.Element // generator of 2 adic subgroup of order 2*nb_constraints - generatorSqRtInv fr.Element - cardinality int - cardinalityInv fr.Element +type Domain struct { + Generator fr.Element + GeneratorInv fr.Element + GeneratorSqRt fr.Element // generator of 2 adic subgroup of order 2*nb_constraints + GeneratorSqRtInv fr.Element + Cardinality int + CardinalityInv fr.Element } // newDomain returns a subgroup with a power of 2 cardinality // cardinality >= m // compute a field element of order 2x and store it in GeneratorSqRt // all other values can be derived from x, GeneratorSqrt -func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { - subGroup := &domain{} +func NewDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *Domain { + subGroup := &Domain{} x := nextPowerOfTwo(uint(m)) // maxOderRoot is the largest power-of-two order for any element in the field @@ -131,14 +131,14 @@ func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { panic("m is too big: the required root of unity does not exist") } expo := uint64(1 << (maxOrderRoot - logx - 1)) - subGroup.generatorSqRt.Exp(rootOfUnity, expo) + subGroup.GeneratorSqRt.Exp(rootOfUnity, expo) // Generator = GeneratorSqRt^2 has order x - subGroup.generator.Mul(&subGroup.generatorSqRt, &subGroup.generatorSqRt) // order x - subGroup.cardinality = int(x) - subGroup.generatorSqRtInv.Inverse(&subGroup.generatorSqRt) - subGroup.generatorInv.Inverse(&subGroup.generator) - subGroup.cardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.cardinalityInv) + subGroup.Generator.Mul(&subGroup.GeneratorSqRt, &subGroup.GeneratorSqRt) // order x + subGroup.Cardinality = int(x) + subGroup.GeneratorSqRtInv.Inverse(&subGroup.GeneratorSqRt) + subGroup.GeneratorInv.Inverse(&subGroup.Generator) + subGroup.CardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.CardinalityInv) return subGroup } diff --git a/backend/static/bn256/groth16/groth16_test.go b/backend/bn256/groth16/groth16_test.go similarity index 92% rename from backend/static/bn256/groth16/groth16_test.go rename to backend/bn256/groth16/groth16_test.go index 10183ba49..9b1277b42 100644 --- a/backend/static/bn256/groth16/groth16_test.go +++ b/backend/bn256/groth16/groth16_test.go @@ -20,14 +20,14 @@ import ( curve "github.com/consensys/gurvy/bn256" "github.com/consensys/gurvy/bn256/fr" - "github.com/consensys/gnark/backend/static/bn256" + backend_bn256 "github.com/consensys/gnark/backend/bn256" "path/filepath" "runtime/debug" "strings" "testing" - constants "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/internal/utils/encoding/gob" "reflect" @@ -59,7 +59,7 @@ func TestCircuits(t *testing.T) { if err := bad.ReadFile(name + ".bad"); err != nil { t.Fatal(err) } - var r1cs backend.R1CS + var r1cs backend_bn256.R1CS if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { t.Fatal(err) @@ -74,13 +74,13 @@ func TestParsePublicInput(t *testing.T) { expectedNames := [2]string{"data", "ONE_WIRE"} inputOneWire := backend.NewAssignment() - inputOneWire.Assign(constants.Public, "ONE_WIRE", 3) + inputOneWire.Assign(backend.Public, "ONE_WIRE", 3) if _, err := parsePublicInput(expectedNames[:], inputOneWire); err == nil { t.Fatal("expected ErrMissingAssigment error") } inputPrivate := backend.NewAssignment() - inputPrivate.Assign(constants.Secret, "data", 3) + inputPrivate.Assign(backend.Secret, "data", 3) if _, err := parsePublicInput(expectedNames[:], inputPrivate); err == nil { t.Fatal("expected ErrMissingAssigment error") } @@ -91,7 +91,7 @@ func TestParsePublicInput(t *testing.T) { } correctInput := backend.NewAssignment() - correctInput.Assign(constants.Public, "data", 3) + correctInput.Assign(backend.Public, "data", 3) got, err := parsePublicInput(expectedNames[:], correctInput) if err != nil { t.Fatal(err) @@ -115,7 +115,7 @@ func TestParsePublicInput(t *testing.T) { // benches // //--------------------// -func referenceCircuit() (backend.R1CS, backend.Assignments, backend.Assignments) { +func referenceCircuit() (backend_bn256.R1CS, backend.Assignments, backend.Assignments) { name := "../../../../backend/groth16/testdata/" + strings.ToLower(curve.ID.String()) + "/reference_large" @@ -127,7 +127,7 @@ func referenceCircuit() (backend.R1CS, backend.Assignments, backend.Assignments) if err := bad.ReadFile(name + ".bad"); err != nil { panic(err) } - var r1cs backend.R1CS + var r1cs backend_bn256.R1CS if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { panic(err) @@ -207,7 +207,7 @@ func NewAssert(t *testing.T) *Assert { // NotSolved check that a solution does NOT solve a circuit // error may be missing inputs or unsatisfied constraints // it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend.R1CS, solution backend.Assignments) { +func (assert *Assert) NotSolved(r1cs *backend_bn256.R1CS, solution backend.Assignments) { // setup var pk ProvingKey @@ -223,7 +223,7 @@ func (assert *Assert) NotSolved(r1cs *backend.R1CS, solution backend.Assignments // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c // it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { +func (assert *Assert) Solved(r1cs *backend_bn256.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { // setup var pk ProvingKey diff --git a/backend/static/bn256/groth16/prove.go b/backend/bn256/groth16/prove.go similarity index 90% rename from backend/static/bn256/groth16/prove.go rename to backend/bn256/groth16/prove.go index a36470d0d..c3b57477d 100644 --- a/backend/static/bn256/groth16/prove.go +++ b/backend/bn256/groth16/prove.go @@ -20,11 +20,12 @@ import ( curve "github.com/consensys/gurvy/bn256" "github.com/consensys/gurvy/bn256/fr" - "github.com/consensys/gnark/backend/static/bn256" + backend_bn256 "github.com/consensys/gnark/backend/bn256" "runtime" "sync" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/internal/utils/debug" "github.com/consensys/gnark/internal/utils/parallel" ) @@ -49,11 +50,11 @@ func init() { } // Prove creates proof from a circuit -func Prove(r1cs *backend.R1CS, pk *ProvingKey, solution backend.Assignments) (*Proof, error) { +func Prove(r1cs *backend_bn256.R1CS, pk *ProvingKey, solution backend.Assignments) (*Proof, error) { proof := &Proof{} // fft domain (computeH) - fftDomain := newDomain(root, MaxOrder, r1cs.NbConstraints) + fftDomain := backend_bn256.NewDomain(root, MaxOrder, r1cs.NbConstraints) // sample random r and s var r, s, _r, _s fr.Element @@ -64,9 +65,9 @@ func Prove(r1cs *backend.R1CS, pk *ProvingKey, solution backend.Assignments) (*P // Solve the R1CS and compute the a, b, c vectors wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) err := r1cs.Solve(solution, a, b, c, wireValues) if err != nil { return nil, err @@ -195,7 +196,7 @@ func computeAr1(pk *ProvingKey, _r fr.Element, wireValues []fr.Element, chToken return chResult } -func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { +func computeH(a, b, c []fr.Element, fftDomain *backend_bn256.Domain) <-chan []fr.Element { chResult := make(chan []fr.Element, 1) go func() { // H part of Krs @@ -208,7 +209,7 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { debug.Assert((n == len(b)) && (n == len(c))) // add padding - padding := make([]fr.Element, fftDomain.cardinality-n) + padding := make([]fr.Element, fftDomain.Cardinality-n) a = append(a, padding...) b = append(b, padding...) c = append(c, padding...) @@ -223,18 +224,18 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { // expTable[2] = fftDomain.GeneratorSqrt^2 * fftDomain.CardinalityInv // ... expTable := make([]fr.Element, n) - expTable[0] = fftDomain.cardinalityInv + expTable[0] = fftDomain.CardinalityInv var wgExpTable sync.WaitGroup // to ensure the pool is busy while the FFT splits, we schedule precomputation of the exp table // before the FFTs - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRt, expTable, &wgExpTable) + asyncExpTable(fftDomain.CardinalityInv, fftDomain.GeneratorSqRt, expTable, &wgExpTable) var wg sync.WaitGroup FFTa := func(s []fr.Element) { // FFT inverse - fft(s, fftDomain.generatorInv) + backend_bn256.FFT(s, fftDomain.GeneratorInv) // wait for the expTable to be pre-computed // in the nominal case, this is non-blocking as the expTable was scheduled before the FFT @@ -246,7 +247,7 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { }) // FFT coset - fft(s, fftDomain.generator) + backend_bn256.FFT(s, fftDomain.Generator) wg.Done() } wg.Add(3) @@ -273,10 +274,10 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { // expTable[0] = fftDomain.CardinalityInv // expTable[1] = fftDomain.GeneratorSqRtInv^1 * fftDomain.CardinalityInv // expTable[2] = fftDomain.GeneratorSqRtInv^2 * fftDomain.CardinalityInv - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRtInv, expTable, &wgExpTable) + asyncExpTable(fftDomain.CardinalityInv, fftDomain.GeneratorSqRtInv, expTable, &wgExpTable) // ifft_coset - fft(a, fftDomain.generatorInv) + backend_bn256.FFT(a, fftDomain.GeneratorInv) wgExpTable.Wait() // wait for pre-computation of exp table to be done parallel.Execute(n, func(start, end int) { diff --git a/backend/static/bn256/groth16/setup.go b/backend/bn256/groth16/setup.go similarity index 90% rename from backend/static/bn256/groth16/setup.go rename to backend/bn256/groth16/setup.go index 47b1cb264..57102aab1 100644 --- a/backend/static/bn256/groth16/setup.go +++ b/backend/bn256/groth16/setup.go @@ -14,7 +14,6 @@ // Code generated by gnark/internal/generators DO NOT EDIT -// Package groth16 exposes zkSNARK (Groth16) 3 algorithms: Setup, Prove and Verify package groth16 import ( @@ -23,7 +22,7 @@ import ( "github.com/consensys/gnark/internal/utils/parallel" - "github.com/consensys/gnark/backend/static/bn256" + backend_bn256 "github.com/consensys/gnark/backend/bn256" ) const RootOfUnityStr = "19103219067921713944291392827692070036145651957329286315305642004821462161904" @@ -67,7 +66,7 @@ type VerifyingKey struct { } // Setup constructs the SRS -func Setup(r1cs *backend.R1CS, pk *ProvingKey, vk *VerifyingKey) { +func Setup(r1cs *backend_bn256.R1CS, pk *ProvingKey, vk *VerifyingKey) { /* Setup @@ -85,13 +84,13 @@ func Setup(r1cs *backend.R1CS, pk *ProvingKey, vk *VerifyingKey) { nbConstraints := r1cs.NbConstraints // Setting group for fft - gateGroup := newDomain(root, MaxOrder, nbConstraints) + gateGroup := backend_bn256.NewDomain(root, MaxOrder, nbConstraints) // initialize proving key pk.G1.A = make([]curve.G1Affine, nbWires) pk.G1.B = make([]curve.G1Affine, nbWires) pk.G1.K = make([]curve.G1Affine, r1cs.NbWires-r1cs.NbPublicWires) - pk.G1.Z = make([]curve.G1Affine, gateGroup.cardinality) + pk.G1.Z = make([]curve.G1Affine, gateGroup.Cardinality) pk.G2.B = make([]curve.G2Affine, nbWires) // initialize verifying key @@ -174,7 +173,7 @@ func setupToxicWaste(pk *ProvingKey, vk *VerifyingKey, tw toxicWaste) { } -func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { +func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *backend_bn256.Domain) { c := curve.BN256() @@ -183,18 +182,18 @@ func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { var zdt fr.Element - zdt.Exp(tw.t, uint64(g.cardinality)). + zdt.Exp(tw.t, uint64(g.Cardinality)). Sub(&zdt, &one). Div(&zdt, &tw.delta) // sets Zdt to Zdt/delta - Zdt := make([]fr.Element, g.cardinality) - for i := 0; i < g.cardinality; i++ { + Zdt := make([]fr.Element, g.Cardinality) + for i := 0; i < g.Cardinality; i++ { Zdt[i] = zdt.ToRegular() zdt.MulAssign(&tw.t) } // Z(t) = [(t^j*Zd(t) / delta)] - parallel.Execute(g.cardinality, func(start, end int) { + parallel.Execute(g.Cardinality, func(start, end int) { var pkG1Z curve.G1Jac for j := start; j < end; j++ { pkG1Z.ScalarMulByGen(c, Zdt[j]) @@ -204,7 +203,7 @@ func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { } -func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B []fr.Element, C []fr.Element) { +func setupABC(r1cs *backend_bn256.R1CS, g *backend_bn256.Domain, tw toxicWaste) (A []fr.Element, B []fr.Element, C []fr.Element) { nbWires := r1cs.NbWires @@ -220,16 +219,16 @@ func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B [ // L0 = 1/n*(t^n-1)/(t-1), Li+1 = w*Li*(t-w^i)/(t-w^(i+1)) var w, wi, tmp fr.Element - w.Set(&g.generator) + w.Set(&g.Generator) wi.SetOne() // Setting L0 ithLagrangePolt.Set(&tw.t) - ithLagrangePolt.Exp(ithLagrangePolt, uint64(g.cardinality)). + ithLagrangePolt.Exp(ithLagrangePolt, uint64(g.Cardinality)). Sub(&ithLagrangePolt, &one) tmp.Set(&tw.t).Sub(&tmp, &one) ithLagrangePolt.Div(&ithLagrangePolt, &tmp). - Mul(&ithLagrangePolt, &g.cardinalityInv) + Mul(&ithLagrangePolt, &g.CardinalityInv) // Constraints for _, c := range r1cs.Constraints { @@ -259,7 +258,7 @@ func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B [ } -func setupKeyVectors(A, B, C []fr.Element, pk *ProvingKey, vk *VerifyingKey, tw toxicWaste, r1cs *backend.R1CS) { +func setupKeyVectors(A, B, C []fr.Element, pk *ProvingKey, vk *VerifyingKey, tw toxicWaste, r1cs *backend_bn256.R1CS) { c := curve.BN256() diff --git a/backend/static/bn256/groth16/verify.go b/backend/bn256/groth16/verify.go similarity index 90% rename from backend/static/bn256/groth16/verify.go rename to backend/bn256/groth16/verify.go index 69274e936..8531b9893 100644 --- a/backend/static/bn256/groth16/verify.go +++ b/backend/bn256/groth16/verify.go @@ -20,9 +20,7 @@ import ( curve "github.com/consensys/gurvy/bn256" "github.com/consensys/gurvy/bn256/fr" - "github.com/consensys/gnark/backend/static/bn256" - - constants "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/backend" ) // Verify verifies a proof @@ -74,15 +72,15 @@ func parsePublicInput(expectedNames []string, input backend.Assignments) ([]fr.E publicInput := input.DiscardSecrets() for i := 0; i < len(expectedNames); i++ { - if expectedNames[i] == constants.OneWire { + if expectedNames[i] == backend.OneWire { // ONE_WIRE is a reserved name, it should not be set by the user toReturn[i].SetOne() toReturn[i].FromMont() } else { if val, ok := publicInput[expectedNames[i]]; ok { - toReturn[i] = val.Value.ToRegular() + toReturn[i].SetBigInt(&val.Value).FromMont() } else { - return nil, constants.ErrInputNotSet + return nil, backend.ErrInputNotSet } } } diff --git a/backend/static/bn256/r1cs.go b/backend/bn256/r1cs.go similarity index 89% rename from backend/static/bn256/r1cs.go rename to backend/bn256/r1cs.go index a2010c967..f31fa5df5 100644 --- a/backend/static/bn256/r1cs.go +++ b/backend/bn256/r1cs.go @@ -14,7 +14,7 @@ // Code generated by gnark/internal/generators DO NOT EDIT -package backend +package backend_bn256 import ( "fmt" @@ -24,6 +24,7 @@ import ( "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" "github.com/consensys/gnark/internal/utils/encoding/gob" ) @@ -44,12 +45,38 @@ type R1CS struct { Constraints []R1C } +// New return a typed R1CS with the curve from frontend.R1CS +func New(r1cs *frontend.R1CS) R1CS { + toReturn := R1CS{ + NbWires: r1cs.NbWires, + NbPublicWires: r1cs.NbPublicWires, + NbPrivateWires: r1cs.NbPrivateWires, + PrivateWires: r1cs.PrivateWires, + PublicWires: r1cs.PublicWires, + WireTags: r1cs.WireTags, + NbConstraints: r1cs.NbConstraints, + NbCOConstraints: r1cs.NbCOConstraints, + } + toReturn.Constraints = make([]R1C, len(r1cs.Constraints)) + for i := 0; i < len(r1cs.Constraints); i++ { + from := r1cs.Constraints[i] + toReturn.Constraints[i] = R1C{ + Solver: from.Solver, + L: make(LinearExpression, len(from.L)), + R: make(LinearExpression, len(from.R)), + O: make(LinearExpression, len(from.O)), + } + + } + return toReturn +} + // Solve sets all the wires and returns the a, b, c vectors. // the r1cs system should have been compiled before. The entries in a, b, c are in Montgomery form. // assignment: map[string]value: contains the input variables // a, b, c vectors: ab-c = hz // wireValues = [intermediateVariables | privateInputs | publicInputs] -func (r1cs *R1CS) Solve(assignment Assignments, a, b, c, wireValues []fr.Element) error { +func (r1cs *R1CS) Solve(assignment backend.Assignments, a, b, c, wireValues []fr.Element) error { // compute the wires and the a, b, c polynomials debug.Assert(len(a) == r1cs.NbConstraints) @@ -72,7 +99,7 @@ func (r1cs *R1CS) Solve(assignment Assignments, a, b, c, wireValues []fr.Element if visibility == backend.Secret && val.IsPublic || visibility == backend.Public && !val.IsPublic { return fmt.Errorf("%q: %w", name, backend.ErrInputVisiblity) } - wireValues[i+offset].Set(&val.Value) + wireValues[i+offset].SetBigInt(&val.Value) wireInstantiated[i+offset] = true } else { return fmt.Errorf("%q: %w", name, backend.ErrInputNotSet) @@ -171,7 +198,7 @@ type R1C struct { L LinearExpression R LinearExpression O LinearExpression - Solver solvingMethod + Solver frontend.SolvingMethod } // compute left, right, o part of a r1cs constraint @@ -212,7 +239,7 @@ func (r1c *R1C) solveR1c(wireInstantiated []bool, wireValues []fr.Element) { switch r1c.Solver { // in this case we solve a R1C by isolating the uncomputed wire - case SingleOutput: + case frontend.SingleOutput: // the index of the non zero entry shows if L, R or O has an uninstantiated wire // the content is the ID of the wire non instantiated @@ -282,7 +309,7 @@ func (r1c *R1C) solveR1c(wireInstantiated []bool, wireValues []fr.Element) { // in the case the R1C is solved by directly computing the binary decomposition // of the variable - case BinaryDec: + case frontend.BinaryDec: // the binary decomposition must be called on the non Mont form of the number n := wireValues[r1c.O[0].ID].ToRegular() diff --git a/backend/groth16/assert.go b/backend/groth16/assert.go deleted file mode 100644 index 0ba0c4a9c..000000000 --- a/backend/groth16/assert.go +++ /dev/null @@ -1,105 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package groth16 - -import ( - "reflect" - "testing" - - "github.com/consensys/gnark/backend" - - "github.com/stretchr/testify/require" -) - -// Assert is a helper to test circuits -// it embeds a frontend.Assert object (see gnark/cs/assert) -type Assert struct { - *require.Assertions -} - -// NewAssert returns an Assert helper -func NewAssert(t *testing.T) *Assert { - return &Assert{require.New(t)} -} - -// NotSolved check that a solution does NOT solve a circuit -// error may be missing inputs or unsatisfied constraints -// it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend.R1CS, solution backend.Assignments) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // prover - _, err := Prove(r1cs, &pk, solution) - assert.Error(err, "proving with bad solution should output an error") -} - -// Solved check that a solution solves a circuit -// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. -// this helper also ensure the result vectors a*b=c -// it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // ensure random sampling; calliung setup twice should produce != pk and vk - { - var pk2 ProvingKey - var vk2 VerifyingKey - Setup(r1cs, &pk2, &vk2) - - assert.False(pk.G1.Alpha.Equal(&pk2.G1.Alpha), "groth16 setup with same input should produce different outputs (alpha)") - assert.False(pk.G1.Beta.Equal(&pk2.G1.Beta), "groth16 setup with same input should produce different outputs (beta)") - assert.False(pk.G1.Delta.Equal(&pk2.G1.Delta), "groth16 setup with same input should produce different outputs (delta)") - - for i := 0; i < len(pk.G1.K); i++ { - if !pk.G1.K[i].IsInfinity() { - assert.False(pk.G1.K[i].Equal(&pk2.G1.K[i]), "groth16 setup with same input should produce different outputs (pk.K)") - } - } - - for i := 0; i < len(vk.G1.K); i++ { - if !vk.G1.K[i].IsInfinity() { - assert.False(vk.G1.K[i].Equal(&vk2.G1.K[i]), "groth16 setup with same input should produce different outputs (vk.K)") - } - } - } - - // prover - proof, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - - // ensure random sampling; calling prove twice with same input should produce different proof - { - proof2, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - assert.False(reflect.DeepEqual(proof, proof2), "calling prove twice with same input should produce different proof") - } - - // verifier - { - isValid, err := Verify(proof, &vk, solution.DiscardSecrets()) - assert.Nil(err, "verifying proof with good solution should not output an error") - assert.True(isValid, "unexpected Verify(proof) result") - } -} diff --git a/backend/groth16/fft.go b/backend/groth16/fft.go deleted file mode 100644 index a801be736..000000000 --- a/backend/groth16/fft.go +++ /dev/null @@ -1,155 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package groth16 - -import ( - "math/bits" - "runtime" - "sync" - - "github.com/consensys/gnark/curve/fr" -) - -// fft computes the discrete Fourier transform of a and stores the result in a. -// The result is in bit-reversed order. -// len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. -// The algorithm is recursive, decimation-in-frequency. [cite] -func fft(a []fr.Element, w fr.Element) { - var wg sync.WaitGroup - asyncFFT(a, w, &wg, 1) - wg.Wait() - bitReverse(a) -} - -func asyncFFT(a []fr.Element, w fr.Element, wg *sync.WaitGroup, splits uint) { - n := len(a) - if n == 1 { - return - } - m := n >> 1 - - // wPow == w^1 - wPow := w - - // i == 0 - t := a[0] - a[0].AddAssign(&a[m]) - a[m].Sub(&t, &a[m]) - - for i := 1; i < m; i++ { - t = a[i] - a[i].AddAssign(&a[i+m]) - - a[i+m]. - Sub(&t, &a[i+m]). - MulAssign(&wPow) - - wPow.MulAssign(&w) - } - - // if m == 1, then next iteration ends, no need to call 2 extra functions for that - if m == 1 { - return - } - - // note: w is passed by value - w.Square(&w) - - const parallelThreshold = 64 - serial := splits > uint(runtime.NumCPU()) || m <= parallelThreshold - - if serial { - asyncFFT(a[0:m], w, nil, splits) - asyncFFT(a[m:n], w, nil, splits) - } else { - splits <<= 1 - wg.Add(1) - go func() { - asyncFFT(a[m:n], w, wg, splits) - wg.Done() - }() - asyncFFT(a[0:m], w, wg, splits) - } -} - -// bitReverse applies the bit-reversal permutation to a. -// len(a) must be a power of 2 (as in every single function in this file) -func bitReverse(a []fr.Element) { - n := uint(len(a)) - nn := uint(bits.UintSize - bits.TrailingZeros(n)) - - var tReverse fr.Element - for i := uint(0); i < n; i++ { - irev := bits.Reverse(i) >> nn - if irev > i { - tReverse = a[i] - a[i] = a[irev] - a[irev] = tReverse - } - } -} - -// domain with a power of 2 cardinality -// compute a field element of order 2x and store it in GeneratorSqRt -// all other values can be derived from x, GeneratorSqrt -type domain struct { - generator fr.Element - generatorInv fr.Element - generatorSqRt fr.Element // generator of 2 adic subgroup of order 2*nb_constraints - generatorSqRtInv fr.Element - cardinality int - cardinalityInv fr.Element -} - -// newDomain returns a subgroup with a power of 2 cardinality -// cardinality >= m -// compute a field element of order 2x and store it in GeneratorSqRt -// all other values can be derived from x, GeneratorSqrt -func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { - subGroup := &domain{} - x := nextPowerOfTwo(uint(m)) - - // maxOderRoot is the largest power-of-two order for any element in the field - // set subGroup.GeneratorSqRt = rootOfUnity^(2^(maxOrderRoot-log(x)-1)) - // to this end, compute expo = 2^(maxOrderRoot-log(x)-1) - logx := uint(bits.TrailingZeros(x)) - if logx > maxOrderRoot-1 { - panic("m is too big: the required root of unity does not exist") - } - expo := uint64(1 << (maxOrderRoot - logx - 1)) - subGroup.generatorSqRt.Exp(rootOfUnity, expo) - - // Generator = GeneratorSqRt^2 has order x - subGroup.generator.Mul(&subGroup.generatorSqRt, &subGroup.generatorSqRt) // order x - subGroup.cardinality = int(x) - subGroup.generatorSqRtInv.Inverse(&subGroup.generatorSqRt) - subGroup.generatorInv.Inverse(&subGroup.generator) - subGroup.cardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.cardinalityInv) - - return subGroup -} - -func nextPowerOfTwo(n uint) uint { - p := uint(1) - if (n & (n - 1)) == 0 { - return n - } - for p < n { - p <<= 1 - } - return p -} diff --git a/backend/groth16/groth16_test.go b/backend/groth16/groth16_test.go deleted file mode 100644 index a6420f0d3..000000000 --- a/backend/groth16/groth16_test.go +++ /dev/null @@ -1,188 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package groth16 - -import ( - "github.com/consensys/gnark/curve" - "github.com/consensys/gnark/curve/fr" - - "github.com/consensys/gnark/backend" - - "path/filepath" - "runtime/debug" - "strings" - "testing" - - constants "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/internal/utils/encoding/gob" -) - -func TestCircuits(t *testing.T) { - assert := NewAssert(t) - - matches, err := filepath.Glob("./testdata/" + strings.ToLower(curve.ID.String()) + "/*.r1cs") - - if err != nil { - t.Fatal(err) - } - - if len(matches) == 0 { - t.Fatal("couldn't find test circuits for", curve.ID.String()) - } - for _, name := range matches { - name = name[:len(name)-5] - t.Log(curve.ID.String(), " -- ", filepath.Base(name)) - - good := backend.NewAssignment() - if err := good.ReadFile(name + ".good"); err != nil { - t.Fatal(err) - } - bad := backend.NewAssignment() - if err := bad.ReadFile(name + ".bad"); err != nil { - t.Fatal(err) - } - var r1cs backend.R1CS - - if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { - t.Fatal(err) - } - assert.NotSolved(&r1cs, bad) - assert.Solved(&r1cs, good, nil) - } -} - -func TestParsePublicInput(t *testing.T) { - - expectedNames := [2]string{"data", "ONE_WIRE"} - - inputOneWire := backend.NewAssignment() - inputOneWire.Assign(constants.Public, "ONE_WIRE", 3) - if _, err := parsePublicInput(expectedNames[:], inputOneWire); err == nil { - t.Fatal("expected ErrMissingAssigment error") - } - - inputPrivate := backend.NewAssignment() - inputPrivate.Assign(constants.Secret, "data", 3) - if _, err := parsePublicInput(expectedNames[:], inputPrivate); err == nil { - t.Fatal("expected ErrMissingAssigment error") - } - - missingInput := backend.NewAssignment() - if _, err := parsePublicInput(expectedNames[:], missingInput); err == nil { - t.Fatal("expected ErrMissingAssigment") - } - - correctInput := backend.NewAssignment() - correctInput.Assign(constants.Public, "data", 3) - got, err := parsePublicInput(expectedNames[:], correctInput) - if err != nil { - t.Fatal(err) - } - - expected := make([]fr.Element, 2) - expected[0].SetUint64(3).FromMont() - expected[1].SetUint64(1).FromMont() - if len(got) != len(expected) { - t.Fatal("Unexpected length for assignment") - } - for i := 0; i < len(got); i++ { - if !got[i].Equal(&expected[i]) { - t.Fatal("error public assignment") - } - } - -} - -//--------------------// -// benches // -//--------------------// - -func referenceCircuit() (backend.R1CS, backend.Assignments, backend.Assignments) { - - name := "./testdata/" + strings.ToLower(curve.ID.String()) + "/reference_large" - - good := backend.NewAssignment() - if err := good.ReadFile(name + ".good"); err != nil { - panic(err) - } - bad := backend.NewAssignment() - if err := bad.ReadFile(name + ".bad"); err != nil { - panic(err) - } - var r1cs backend.R1CS - - if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { - panic(err) - } - - return r1cs, good, bad -} - -// BenchmarkSetup is a helper to benchmark Setup on a given circuit -func BenchmarkSetup(b *testing.B) { - r1cs, _, _ := referenceCircuit() - defer debug.SetGCPercent(debug.SetGCPercent(-1)) - var pk ProvingKey - var vk VerifyingKey - b.ResetTimer() - - b.Run("setup", func(b *testing.B) { - for i := 0; i < b.N; i++ { - Setup(&r1cs, &pk, &vk) - } - }) -} - -// BenchmarkProver is a helper to benchmark Prove on a given circuit -// it will run the Setup, reset the benchmark timer and benchmark the prover -func BenchmarkProver(b *testing.B) { - r1cs, solution, _ := referenceCircuit() - defer debug.SetGCPercent(debug.SetGCPercent(-1)) - var pk ProvingKey - var vk VerifyingKey - Setup(&r1cs, &pk, &vk) - - b.ResetTimer() - b.Run("prover", func(b *testing.B) { - for i := 0; i < b.N; i++ { - _, _ = Prove(&r1cs, &pk, solution) - } - }) -} - -// BenchmarkVerifier is a helper to benchmark Verify on a given circuit -// it will run the Setup, the Prover and reset the benchmark timer and benchmark the verifier -// the provided solution will be filtered to keep only public inputs -func BenchmarkVerifier(b *testing.B) { - r1cs, solution, _ := referenceCircuit() - defer debug.SetGCPercent(debug.SetGCPercent(-1)) - var pk ProvingKey - var vk VerifyingKey - Setup(&r1cs, &pk, &vk) - proof, err := Prove(&r1cs, &pk, solution) - if err != nil { - panic(err) - } - - solution = solution.DiscardSecrets() - b.ResetTimer() - b.Run("verifier", func(b *testing.B) { - for i := 0; i < b.N; i++ { - _, _ = Verify(proof, &vk, solution) - } - }) -} diff --git a/backend/groth16/prove.go b/backend/groth16/prove.go deleted file mode 100644 index c2ccd01b4..000000000 --- a/backend/groth16/prove.go +++ /dev/null @@ -1,332 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package groth16 - -import ( - "github.com/consensys/gnark/curve" - "github.com/consensys/gnark/curve/fr" - - "github.com/consensys/gnark/backend" - - "runtime" - "sync" - - "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/internal/utils/parallel" -) - -// Proof represents a Groth16 proof that was encoded with a ProvingKey and can be verified -// with a valid statement and a VerifyingKey -type Proof struct { - Ar, Krs curve.G1Affine - Bs curve.G2Affine -} - -var ( - root fr.Element - minusTwoInv fr.Element -) - -func init() { - root.SetString(RootOfUnityStr) - minusTwoInv.SetUint64(2) - minusTwoInv.Neg(&minusTwoInv). - Inverse(&minusTwoInv) -} - -// Prove creates proof from a circuit -func Prove(r1cs *backend.R1CS, pk *ProvingKey, solution backend.Assignments) (*Proof, error) { - proof := &Proof{} - - // fft domain (computeH) - fftDomain := newDomain(root, MaxOrder, r1cs.NbConstraints) - - // sample random r and s - var r, s, _r, _s fr.Element - r.SetRandom() - s.SetRandom() - _r = r.ToRegular() - _s = s.ToRegular() - - // Solve the R1CS and compute the a, b, c vectors - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - err := r1cs.Solve(solution, a, b, c, wireValues) - if err != nil { - return nil, err - } - // get the wire values in regular form - // wireValues := make([]fr.Element, len(r1cs.WireValues)) - work := func(start, end int) { - for i := start; i < end; i++ { - wireValues[i].FromMont() - } - } - parallel.Execute(len(wireValues), work) - - // compute proof elements - // 4 multiexp + 1 FFT - // G2 multiexp is likely the most compute intensive task here - - // H (witness reduction / FFT part) - chH := computeH(a, b, c, fftDomain) - - // these tokens ensure multiExp tasks are enqueue in order in the pool - // so that bs2 doesn't compete with ar1 and bs1 for resources - // hence delaying Krs compute longer than needed - chTokenA := make(chan struct{}, 1) - chTokenB := make(chan struct{}, 1) - - // Ar1 (1 multi exp G1 - size = len(wires)) - chAr1 := computeAr1(pk, _r, wireValues, chTokenA) - - // Bs1 (1 multi exp G1 - size = len(wires)) - chBs1 := computeBs1(pk, _s, wireValues, chTokenA, chTokenB) - - // Bs2 (1 multi exp G2 - size = len(wires)) - chBs2 := computeBs2(pk, _s, wireValues, chTokenB) - - // Krs -- computeKrs go routine will wait for H, Ar1 and Bs1 to be done - h := <-chH - proof.Ar = <-chAr1 - bs := <-chBs1 - proof.Krs = <-computeKrs(pk, r, s, _r, _s, wireValues, proof.Ar, bs, h, r1cs.NbWires-r1cs.NbPublicWires, chTokenB) - - proof.Bs = <-chBs2 - - return proof, nil -} - -func computeKrs(pk *ProvingKey, r, s, _r, _s fr.Element, wireValues []fr.Element, ar, bs curve.G1Affine, h []fr.Element, kIndex int, chToken chan struct{}) <-chan curve.G1Affine { - chResult := make(chan curve.G1Affine, 1) - go func() { - var Krs curve.G1Jac - var KrsAffine curve.G1Affine - - // Krs (H part + priv part) - r.Mul(&r, &s).Neg(&r) - points := append(pk.G1.Z, pk.G1.K[:kIndex]...) //, Ar, bs1, pk.G1.Delta) - scalars := append(h, wireValues[:kIndex]...) //, _s, _r, r.ToRegular()) - // Krs random part - points = append(points, pk.G1.Delta, ar, bs) - scalars = append(scalars, r.ToRegular(), _s, _r) - <-chToken - chAsync := Krs.MultiExp(curve.GetCurve(), points, scalars) - <-chAsync - Krs.ToAffineFromJac(&KrsAffine) - - chResult <- KrsAffine - close(chResult) - }() - return chResult -} - -func computeBs2(pk *ProvingKey, _s fr.Element, wireValues []fr.Element, chToken chan struct{}) <-chan curve.G2Affine { - chResult := make(chan curve.G2Affine, 1) - go func() { - var Bs curve.G2Jac - var BsAffine curve.G2Affine - points2 := append(pk.G2.B, pk.G2.Delta) - scalars2 := append(wireValues, _s) - <-chToken - chAsync := Bs.MultiExp(curve.GetCurve(), points2, scalars2) - chToken <- struct{}{} - <-chAsync - Bs.AddMixed(&pk.G2.Beta) - Bs.ToAffineFromJac(&BsAffine) - chResult <- BsAffine - close(chResult) - }() - return chResult -} - -func computeBs1(pk *ProvingKey, _s fr.Element, wireValues []fr.Element, chTokenA, chTokenB chan struct{}) <-chan curve.G1Affine { - chResult := make(chan curve.G1Affine, 1) - go func() { - var bs1 curve.G1Jac - var bs1Affine curve.G1Affine - - points := append(pk.G1.B, pk.G1.Delta) - scalars := append(wireValues, _s) - <-chTokenA - chAsync := bs1.MultiExp(curve.GetCurve(), points, scalars) - chTokenB <- struct{}{} - <-chAsync - bs1.AddMixed(&pk.G1.Beta) - bs1.ToAffineFromJac(&bs1Affine) - - chResult <- bs1Affine - close(chResult) - }() - return chResult -} - -func computeAr1(pk *ProvingKey, _r fr.Element, wireValues []fr.Element, chToken chan struct{}) <-chan curve.G1Affine { - chResult := make(chan curve.G1Affine, 1) - go func() { - var ar curve.G1Jac - var arAffine curve.G1Affine - points := append(pk.G1.A, pk.G1.Delta) - scalars := append(wireValues, _r) - chAsync := ar.MultiExp(curve.GetCurve(), points, scalars) - chToken <- struct{}{} - <-chAsync - ar.AddMixed(&pk.G1.Alpha) - ar.ToAffineFromJac(&arAffine) - chResult <- arAffine - close(chResult) - }() - return chResult -} - -func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { - chResult := make(chan []fr.Element, 1) - go func() { - // H part of Krs - // Compute H (hz=ab-c, where z=-2 on ker X^n+1 (z(x)=x^n-1)) - // 1 - _a = ifft(a), _b = ifft(b), _c = ifft(c) - // 2 - ca = fft_coset(_a), ba = fft_coset(_b), cc = fft_coset(_c) - // 3 - h = ifft_coset(ca o cb - cc) - - n := len(a) - debug.Assert((n == len(b)) && (n == len(c))) - - // add padding - padding := make([]fr.Element, fftDomain.cardinality-n) - a = append(a, padding...) - b = append(b, padding...) - c = append(c, padding...) - n = len(a) - - // exptable = scale by inverse of n + coset - // ifft(a) would normaly do FFT(a, wInv) then scale by CardinalityInv - // fft_coset(a) would normaly mutliply a with expTable of fftDomain.GeneratorSqRt - // this pre-computed expTable do both in one pass --> it contains - // expTable[0] = fftDomain.CardinalityInv - // expTable[1] = fftDomain.GeneratorSqrt^1 * fftDomain.CardinalityInv - // expTable[2] = fftDomain.GeneratorSqrt^2 * fftDomain.CardinalityInv - // ... - expTable := make([]fr.Element, n) - expTable[0] = fftDomain.cardinalityInv - - var wgExpTable sync.WaitGroup - - // to ensure the pool is busy while the FFT splits, we schedule precomputation of the exp table - // before the FFTs - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRt, expTable, &wgExpTable) - - var wg sync.WaitGroup - FFTa := func(s []fr.Element) { - // FFT inverse - fft(s, fftDomain.generatorInv) - - // wait for the expTable to be pre-computed - // in the nominal case, this is non-blocking as the expTable was scheduled before the FFT - wgExpTable.Wait() - parallel.Execute(n, func(start, end int) { - for i := start; i < end; i++ { - s[i].MulAssign(&expTable[i]) - } - }) - - // FFT coset - fft(s, fftDomain.generator) - wg.Done() - } - wg.Add(3) - go FFTa(a) - go FFTa(b) - FFTa(c) - - // wait for first step (ifft + fft_coset) to be done - wg.Wait() - - // h = ifft_coset(ca o cb - cc) - // reusing a to avoid unecessary memalloc - parallel.Execute(n, func(start, end int) { - for i := start; i < end; i++ { - a[i].Mul(&a[i], &b[i]). - SubAssign(&c[i]). - MulAssign(&minusTwoInv) - } - }) - - // before computing the ifft_coset, we schedule the expTable precompute of the ifft_coset - // to ensure the pool is busy while the FFT splits - // similar reasoning as in ifft pass --> - // expTable[0] = fftDomain.CardinalityInv - // expTable[1] = fftDomain.GeneratorSqRtInv^1 * fftDomain.CardinalityInv - // expTable[2] = fftDomain.GeneratorSqRtInv^2 * fftDomain.CardinalityInv - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRtInv, expTable, &wgExpTable) - - // ifft_coset - fft(a, fftDomain.generatorInv) - - wgExpTable.Wait() // wait for pre-computation of exp table to be done - parallel.Execute(n, func(start, end int) { - for i := start; i < end; i++ { - a[i].MulAssign(&expTable[i]).FromMont() - } - }) - - chResult <- a - close(chResult) - }() - - return chResult -} - -func asyncExpTable(scale, w fr.Element, table []fr.Element, wg *sync.WaitGroup) { - n := len(table) - - // see if it makes sense to parallelize exp tables pre-computation - interval := (n - 1) / runtime.NumCPU() - // this ratio roughly correspond to the number of multiplication one can do in place of a Exp operation - const ratioExpMul = 2400 / 26 - - if interval < ratioExpMul { - wg.Add(1) - go func() { - precomputeExpTableChunk(scale, w, 1, table[1:]) - wg.Done() - }() - } else { - // we parallelize - for i := 1; i < n; i += interval { - start := i - end := i + interval - if end > n { - end = n - } - wg.Add(1) - go func() { - precomputeExpTableChunk(scale, w, uint64(start), table[start:end]) - wg.Done() - }() - } - } -} - -func precomputeExpTableChunk(scale, w fr.Element, power uint64, table []fr.Element) { - table[0].Exp(w, power) - table[0].MulAssign(&scale) - for i := 1; i < len(table); i++ { - table[i].Mul(&table[i-1], &w) - } -} diff --git a/backend/groth16/setup.go b/backend/groth16/setup.go deleted file mode 100644 index d29c2b6b1..000000000 --- a/backend/groth16/setup.go +++ /dev/null @@ -1,306 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -// Package groth16 exposes zkSNARK (Groth16) 3 algorithms: Setup, Prove and Verify -package groth16 - -import ( - "github.com/consensys/gnark/curve" - "github.com/consensys/gnark/curve/fr" - - "github.com/consensys/gnark/internal/utils/parallel" - - "github.com/consensys/gnark/backend" -) - -const RootOfUnityStr = fr.RootOfUnityStr -const MaxOrder = fr.MaxOrder - -// ProvingKey is used by a Groth16 prover to encode a proof of a statement -type ProvingKey struct { - // [α]1, [β]1, [δ]1 - // [A(t)]1, [B(t)]1, [Kpk(t)]1, [Z(t)]1 - G1 struct { - Alpha, Beta, Delta curve.G1Affine - A, B, Z []curve.G1Affine - K []curve.G1Affine // the indexes correspond to the private wires - } - - // [β]2, [δ]2, [B(t)]2 - G2 struct { - Beta, Delta curve.G2Affine - B []curve.G2Affine - } -} - -// VerifyingKey is used by a Groth16 verifier to verify the validity of a proof and a statement -type VerifyingKey struct { - // e(α, β) - E curve.PairingResult - - // -[γ]2, -[δ]2 - // note: storing GammaNeg and DeltaNeg instead of Gamma and Delta - // see proof.Verify() for more details - G2 struct { - GammaNeg, DeltaNeg curve.G2Affine - } - - // [Kvk]1 - G1 struct { - K []curve.G1Affine // The indexes correspond to the public wires - } - - PublicInputs []string // maps the name of the public input -} - -// Setup constructs the SRS -func Setup(r1cs *backend.R1CS, pk *ProvingKey, vk *VerifyingKey) { - - /* - Setup - ----- - To build the verifying keys: - - compile the r1cs system -> the number of gates is len(GateOrdering)+len(PureStructuralConstraints)+len(InpureStructuralConstraints) - - loop through the ordered computational constraints (=gate in r1cs system structure), eValuate A(X), B(X), C(X) with simple formula (the gate number is the current iterator) - - loop through the inpure structural constraints, eValuate A(X), B(X), C(X) with simple formula, the gate number is len(gateOrdering)+ current iterator - - loop through the pure structural constraints, eValuate A(X), B(X), C(X) with simple formula, the gate number is len(gateOrdering)+len(InpureStructuralConstraints)+current iterator - */ - - // get R1CS nb constraints, wires and public/private inputs - nbWires := r1cs.NbWires - nbPublicWires := r1cs.NbPublicWires - nbConstraints := r1cs.NbConstraints - - // Setting group for fft - gateGroup := newDomain(root, MaxOrder, nbConstraints) - - // initialize proving key - pk.G1.A = make([]curve.G1Affine, nbWires) - pk.G1.B = make([]curve.G1Affine, nbWires) - pk.G1.K = make([]curve.G1Affine, r1cs.NbWires-r1cs.NbPublicWires) - pk.G1.Z = make([]curve.G1Affine, gateGroup.cardinality) - pk.G2.B = make([]curve.G2Affine, nbWires) - - // initialize verifying key - vk.G1.K = make([]curve.G1Affine, nbPublicWires) - - // samples toxic waste - toxicWaste := sampleToxicWaste() - - // Set public inputs in Verifying Key (Verify does not need the R1CS data structure) - vk.PublicInputs = r1cs.PublicWires - - // setup the alpha, beta, gamma, delta part of verifying & proving key - setupToxicWaste(pk, vk, toxicWaste) - - // setup Z part of the proving key - setupWitnessPolynomial(pk, toxicWaste, gateGroup) - - // Setup coeffs to compute pk.G1.A, pk.G1.B, pk.G1.K - A, B, C := setupABC(r1cs, gateGroup, toxicWaste) - - // Set the vector of points in the verifying & proving key from the coefficients - setupKeyVectors(A, B, C, pk, vk, toxicWaste, r1cs) - -} - -// toxicWaste toxic waste -type toxicWaste struct { - - // Montgomery form of params - t, alpha, beta, gamma, delta fr.Element - - // Non Montgomery form of params - alphaReg, betaReg, gammaReg, deltaReg fr.Element -} - -func sampleToxicWaste() toxicWaste { - - res := toxicWaste{} - - res.t.SetRandom() - res.alpha.SetRandom() - res.beta.SetRandom() - res.gamma.SetRandom() - res.delta.SetRandom() - - res.alphaReg = res.alpha.ToRegular() - res.betaReg = res.beta.ToRegular() - res.gammaReg = res.gamma.ToRegular() - res.deltaReg = res.delta.ToRegular() - - return res -} - -func setupToxicWaste(pk *ProvingKey, vk *VerifyingKey, tw toxicWaste) { - - c := curve.GetCurve() - - var vkG2JacDeltaNeg, vkG2JacGammaNeg curve.G2Jac - - var pkG1Alpha, pkG1Beta, pkG1Delta curve.G1Jac - var pkG2Beta, pkG2Delta curve.G2Jac - - // sets pk: [α]1, [β]1, [β]2, [δ]1, [δ]2 - pkG1Alpha.ScalarMulByGen(c, tw.alphaReg).ToAffineFromJac(&pk.G1.Alpha) - pkG1Beta.ScalarMulByGen(c, tw.betaReg).ToAffineFromJac(&pk.G1.Beta) - pkG2Beta.ScalarMulByGen(c, tw.betaReg).ToAffineFromJac(&pk.G2.Beta) - pkG1Delta.ScalarMulByGen(c, tw.deltaReg).ToAffineFromJac(&pk.G1.Delta) - pkG2Delta.ScalarMulByGen(c, tw.deltaReg).ToAffineFromJac(&pk.G2.Delta) - - // sets vk: -[δ]2, -[γ]2 - vkG2JacDeltaNeg.ScalarMulByGen(c, tw.deltaReg) - vkG2JacGammaNeg.ScalarMulByGen(c, tw.gammaReg) - - vkG2JacDeltaNeg.Neg(&vkG2JacDeltaNeg). - ToAffineFromJac(&vk.G2.DeltaNeg) - vkG2JacGammaNeg.Neg(&vkG2JacGammaNeg). - ToAffineFromJac(&vk.G2.GammaNeg) - - vk.E = c.FinalExponentiation(c.MillerLoop(pk.G1.Alpha, pk.G2.Beta, &vk.E)) - -} - -func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { - - c := curve.GetCurve() - - var one fr.Element - one.SetOne() - - var zdt fr.Element - - zdt.Exp(tw.t, uint64(g.cardinality)). - Sub(&zdt, &one). - Div(&zdt, &tw.delta) // sets Zdt to Zdt/delta - - Zdt := make([]fr.Element, g.cardinality) - for i := 0; i < g.cardinality; i++ { - Zdt[i] = zdt.ToRegular() - zdt.MulAssign(&tw.t) - } - - // Z(t) = [(t^j*Zd(t) / delta)] - parallel.Execute(g.cardinality, func(start, end int) { - var pkG1Z curve.G1Jac - for j := start; j < end; j++ { - pkG1Z.ScalarMulByGen(c, Zdt[j]) - pkG1Z.ToAffineFromJac(&pk.G1.Z[j]) - } - }) - -} - -func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B []fr.Element, C []fr.Element) { - - nbWires := r1cs.NbWires - - A = make([]fr.Element, nbWires) - B = make([]fr.Element, nbWires) - C = make([]fr.Element, nbWires) - - var one fr.Element - one.SetOne() - - // evaluation of the i-th lagrange polynomial at t - var ithLagrangePolt fr.Element - - // L0 = 1/n*(t^n-1)/(t-1), Li+1 = w*Li*(t-w^i)/(t-w^(i+1)) - var w, wi, tmp fr.Element - w.Set(&g.generator) - wi.SetOne() - - // Setting L0 - ithLagrangePolt.Set(&tw.t) - ithLagrangePolt.Exp(ithLagrangePolt, uint64(g.cardinality)). - Sub(&ithLagrangePolt, &one) - tmp.Set(&tw.t).Sub(&tmp, &one) - ithLagrangePolt.Div(&ithLagrangePolt, &tmp). - Mul(&ithLagrangePolt, &g.cardinalityInv) - - // Constraints - for _, c := range r1cs.Constraints { - - for _, t := range c.L { - tmp.Mul(&ithLagrangePolt, &t.Coeff) - A[t.ID].Add(&A[t.ID], &tmp) - } - for _, t := range c.R { - tmp.Mul(&ithLagrangePolt, &t.Coeff) - B[t.ID].Add(&B[t.ID], &tmp) - } - for _, t := range c.O { - tmp.Mul(&ithLagrangePolt, &t.Coeff) - C[t.ID].Add(&C[t.ID], &tmp) - } - - // Li+1 = w*Li*(t-w^i)/(t-w^(i+1)) - ithLagrangePolt.MulAssign(&w) - tmp.Sub(&tw.t, &wi) - ithLagrangePolt.MulAssign(&tmp) - wi.MulAssign(&w) - tmp.Sub(&tw.t, &wi) - ithLagrangePolt.Div(&ithLagrangePolt, &tmp) - } - return - -} - -func setupKeyVectors(A, B, C []fr.Element, pk *ProvingKey, vk *VerifyingKey, tw toxicWaste, r1cs *backend.R1CS) { - - c := curve.GetCurve() - - // get R1CS nb constraints, wires and public/private inputs - nbWires := r1cs.NbWires - publicStartIndex := r1cs.NbWires - r1cs.NbPublicWires - parallel.Execute(nbWires, func(start, end int) { - var tt fr.Element - var pkG1A, pkG1K, vkG1K curve.G1Jac - for i := start; i < end; i++ { - - pkG1A.ScalarMulByGen(c, A[i].ToRegular()). - ToAffineFromJac(&pk.G1.A[i]) - - A[i].MulAssign(&tw.beta) - tt.Mul(&B[i], &tw.alpha) - A[i].Add(&A[i], &tt). - Add(&A[i], &C[i]) - - if i < publicStartIndex { - A[i].Div(&A[i], &tw.delta).FromMont() - pkG1K.ScalarMulByGen(c, A[i]). - ToAffineFromJac(&pk.G1.K[i]) - } else { - A[i].Div(&A[i], &tw.gamma).FromMont() - vkG1K.ScalarMulByGen(c, A[i]).ToAffineFromJac(&vk.G1.K[i-publicStartIndex]) - } - } - }) - - // Set the points from the coefficients - parallel.Execute(nbWires, func(start, end int) { - var pkG1B curve.G1Jac - var pkG2B curve.G2Jac - for i := start; i < end; i++ { - B[i].FromMont() - pkG1B.ScalarMulByGen(c, B[i]). - ToAffineFromJac(&pk.G1.B[i]) - pkG2B.ScalarMulByGen(c, B[i]). - ToAffineFromJac(&pk.G2.B[i]) - } - }) - -} diff --git a/backend/groth16/testdata/bls377/constant_ops.bad b/backend/groth16/testdata/bls377/constant_ops.bad deleted file mode 100644 index 5ec9c61ae..000000000 --- a/backend/groth16/testdata/bls377/constant_ops.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,12 -public,y,228 diff --git a/backend/groth16/testdata/bls377/constant_ops.good b/backend/groth16/testdata/bls377/constant_ops.good deleted file mode 100644 index a1947f564..000000000 --- a/backend/groth16/testdata/bls377/constant_ops.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,12 -public,y,230 diff --git a/backend/groth16/testdata/bls377/div.bad b/backend/groth16/testdata/bls377/div.bad deleted file mode 100644 index b627c6706..000000000 --- a/backend/groth16/testdata/bls377/div.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,4 -secret,y,10 -public,z,42 diff --git a/backend/groth16/testdata/bls377/div.good b/backend/groth16/testdata/bls377/div.good deleted file mode 100644 index f14114988..000000000 --- a/backend/groth16/testdata/bls377/div.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,4 -secret,y,10 -public,z,3377784699771348169699529975512618612550359734061625531174093382366963695618 diff --git a/backend/groth16/testdata/bls377/expo.bad b/backend/groth16/testdata/bls377/expo.bad deleted file mode 100644 index cb8e244d8..000000000 --- a/backend/groth16/testdata/bls377/expo.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,2 -secret,e,12 -public,y,4095 diff --git a/backend/groth16/testdata/bls377/expo.good b/backend/groth16/testdata/bls377/expo.good deleted file mode 100644 index c8e9a0d5d..000000000 --- a/backend/groth16/testdata/bls377/expo.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,2 -secret,e,12 -public,y,4096 diff --git a/backend/groth16/testdata/bls377/frombinary.bad b/backend/groth16/testdata/bls377/frombinary.bad deleted file mode 100644 index e4fbe1fd1..000000000 --- a/backend/groth16/testdata/bls377/frombinary.bad +++ /dev/null @@ -1,5 +0,0 @@ -secret,b0,1 -secret,b1,0 -secret,b2,1 -secret,b3,1 -public,y,12 diff --git a/backend/groth16/testdata/bls377/frombinary.good b/backend/groth16/testdata/bls377/frombinary.good deleted file mode 100644 index 82a09d13b..000000000 --- a/backend/groth16/testdata/bls377/frombinary.good +++ /dev/null @@ -1,5 +0,0 @@ -secret,b0,1 -secret,b1,0 -secret,b2,1 -secret,b3,1 -public,y,13 diff --git a/backend/groth16/testdata/bls377/inv.bad b/backend/groth16/testdata/bls377/inv.bad deleted file mode 100644 index 4dba10602..000000000 --- a/backend/groth16/testdata/bls377/inv.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,4 -public,y,42 diff --git a/backend/groth16/testdata/bls377/inv.good b/backend/groth16/testdata/bls377/inv.good deleted file mode 100644 index 4b69cee60..000000000 --- a/backend/groth16/testdata/bls377/inv.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,4 -public,y,7916682890089097272733273380107699873164905626706934838689281364922571161601 diff --git a/backend/groth16/testdata/bls377/lut00.bad b/backend/groth16/testdata/bls377/lut00.bad deleted file mode 100644 index aefe3a860..000000000 --- a/backend/groth16/testdata/bls377/lut00.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,0 -public,z,11 -secret,b0,0 diff --git a/backend/groth16/testdata/bls377/lut00.good b/backend/groth16/testdata/bls377/lut00.good deleted file mode 100644 index f27cb8517..000000000 --- a/backend/groth16/testdata/bls377/lut00.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,z,10 diff --git a/backend/groth16/testdata/bls377/lut01.bad b/backend/groth16/testdata/bls377/lut01.bad deleted file mode 100644 index ffe4cdf59..000000000 --- a/backend/groth16/testdata/bls377/lut01.bad +++ /dev/null @@ -1,3 +0,0 @@ -public,z,10 -secret,b0,1 -secret,b1,0 diff --git a/backend/groth16/testdata/bls377/lut01.good b/backend/groth16/testdata/bls377/lut01.good deleted file mode 100644 index 27f2c4032..000000000 --- a/backend/groth16/testdata/bls377/lut01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,z,12 diff --git a/backend/groth16/testdata/bls377/lut10.bad b/backend/groth16/testdata/bls377/lut10.bad deleted file mode 100644 index 7d7d60cfa..000000000 --- a/backend/groth16/testdata/bls377/lut10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,1 -public,z,11 -secret,b0,0 diff --git a/backend/groth16/testdata/bls377/lut10.good b/backend/groth16/testdata/bls377/lut10.good deleted file mode 100644 index 378350253..000000000 --- a/backend/groth16/testdata/bls377/lut10.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,1 -public,z,22 -secret,b0,0 diff --git a/backend/groth16/testdata/bls377/lut11.bad b/backend/groth16/testdata/bls377/lut11.bad deleted file mode 100644 index 472428e73..000000000 --- a/backend/groth16/testdata/bls377/lut11.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,z,9 diff --git a/backend/groth16/testdata/bls377/lut11.good b/backend/groth16/testdata/bls377/lut11.good deleted file mode 100644 index 176288c5d..000000000 --- a/backend/groth16/testdata/bls377/lut11.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,z,7 diff --git a/backend/groth16/testdata/bls377/range.bad b/backend/groth16/testdata/bls377/range.bad deleted file mode 100644 index 8be1df154..000000000 --- a/backend/groth16/testdata/bls377/range.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,5 diff --git a/backend/groth16/testdata/bls377/range.good b/backend/groth16/testdata/bls377/range.good deleted file mode 100644 index 96c7c31f9..000000000 --- a/backend/groth16/testdata/bls377/range.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,4 diff --git a/backend/groth16/testdata/bls377/reference.bad b/backend/groth16/testdata/bls377/reference.bad deleted file mode 100644 index 232e011d6..000000000 --- a/backend/groth16/testdata/bls377/reference.bad +++ /dev/null @@ -1,2 +0,0 @@ -public,y,0 -secret,x,2 diff --git a/backend/groth16/testdata/bls377/reference.good b/backend/groth16/testdata/bls377/reference.good deleted file mode 100644 index 4e0635d72..000000000 --- a/backend/groth16/testdata/bls377/reference.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,4803345939080238994254774613691067330547626561749042248035805857524224137234 diff --git a/backend/groth16/testdata/bls377/reference_large.bad b/backend/groth16/testdata/bls377/reference_large.bad deleted file mode 100644 index 21f05d9ed..000000000 --- a/backend/groth16/testdata/bls377/reference_large.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,0 diff --git a/backend/groth16/testdata/bls377/reference_large.good b/backend/groth16/testdata/bls377/reference_large.good deleted file mode 100644 index e934f695e..000000000 --- a/backend/groth16/testdata/bls377/reference_large.good +++ /dev/null @@ -1,2 +0,0 @@ -public,y,4803345939080238994254774613691067330547626561749042248035805857524224137234 -secret,x,2 diff --git a/backend/groth16/testdata/bls377/reference_small.bad b/backend/groth16/testdata/bls377/reference_small.bad deleted file mode 100644 index 21f05d9ed..000000000 --- a/backend/groth16/testdata/bls377/reference_small.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,0 diff --git a/backend/groth16/testdata/bls377/reference_small.good b/backend/groth16/testdata/bls377/reference_small.good deleted file mode 100644 index 3565c9e6c..000000000 --- a/backend/groth16/testdata/bls377/reference_small.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,5275364704941366642073723812419158758552559041852305518956955779931390964432 diff --git a/backend/groth16/testdata/bls377/xor00.bad b/backend/groth16/testdata/bls377/xor00.bad deleted file mode 100644 index 679ddb760..000000000 --- a/backend/groth16/testdata/bls377/xor00.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,y0,1 diff --git a/backend/groth16/testdata/bls377/xor00.good b/backend/groth16/testdata/bls377/xor00.good deleted file mode 100644 index 33c22b9f2..000000000 --- a/backend/groth16/testdata/bls377/xor00.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,y0,0 diff --git a/backend/groth16/testdata/bls377/xor01.bad b/backend/groth16/testdata/bls377/xor01.bad deleted file mode 100644 index 76cb19436..000000000 --- a/backend/groth16/testdata/bls377/xor01.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,1 -public,y0,0 -secret,b0,0 diff --git a/backend/groth16/testdata/bls377/xor01.good b/backend/groth16/testdata/bls377/xor01.good deleted file mode 100644 index f902bfbd9..000000000 --- a/backend/groth16/testdata/bls377/xor01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,y0,1 diff --git a/backend/groth16/testdata/bls377/xor10.bad b/backend/groth16/testdata/bls377/xor10.bad deleted file mode 100644 index 1c093ae9b..000000000 --- a/backend/groth16/testdata/bls377/xor10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,y0,0 diff --git a/backend/groth16/testdata/bls377/xor10.good b/backend/groth16/testdata/bls377/xor10.good deleted file mode 100644 index ea7f83b60..000000000 --- a/backend/groth16/testdata/bls377/xor10.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,y0,1 diff --git a/backend/groth16/testdata/bls377/xor11.bad b/backend/groth16/testdata/bls377/xor11.bad deleted file mode 100644 index 237370af1..000000000 --- a/backend/groth16/testdata/bls377/xor11.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,y0,1 diff --git a/backend/groth16/testdata/bls377/xor11.good b/backend/groth16/testdata/bls377/xor11.good deleted file mode 100644 index 9bf4b46b2..000000000 --- a/backend/groth16/testdata/bls377/xor11.good +++ /dev/null @@ -1,3 +0,0 @@ -public,y0,0 -secret,b0,1 -secret,b1,1 diff --git a/backend/groth16/testdata/bls381/constant_ops.bad b/backend/groth16/testdata/bls381/constant_ops.bad deleted file mode 100644 index 4398ec4c4..000000000 --- a/backend/groth16/testdata/bls381/constant_ops.bad +++ /dev/null @@ -1,2 +0,0 @@ -public,y,228 -secret,x,12 diff --git a/backend/groth16/testdata/bls381/constant_ops.good b/backend/groth16/testdata/bls381/constant_ops.good deleted file mode 100644 index a1947f564..000000000 --- a/backend/groth16/testdata/bls381/constant_ops.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,12 -public,y,230 diff --git a/backend/groth16/testdata/bls381/div.bad b/backend/groth16/testdata/bls381/div.bad deleted file mode 100644 index b627c6706..000000000 --- a/backend/groth16/testdata/bls381/div.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,4 -secret,y,10 -public,z,42 diff --git a/backend/groth16/testdata/bls381/div.good b/backend/groth16/testdata/bls381/div.good deleted file mode 100644 index c6b8c3202..000000000 --- a/backend/groth16/testdata/bls381/div.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,4 -secret,y,10 -public,z,41948700140100952383558192406548772670152442000422110258082926959950864947612 diff --git a/backend/groth16/testdata/bls381/expo.bad b/backend/groth16/testdata/bls381/expo.bad deleted file mode 100644 index cb8e244d8..000000000 --- a/backend/groth16/testdata/bls381/expo.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,2 -secret,e,12 -public,y,4095 diff --git a/backend/groth16/testdata/bls381/expo.good b/backend/groth16/testdata/bls381/expo.good deleted file mode 100644 index 501d796f6..000000000 --- a/backend/groth16/testdata/bls381/expo.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,e,12 -public,y,4096 -secret,x,2 diff --git a/backend/groth16/testdata/bls381/frombinary.bad b/backend/groth16/testdata/bls381/frombinary.bad deleted file mode 100644 index e4fbe1fd1..000000000 --- a/backend/groth16/testdata/bls381/frombinary.bad +++ /dev/null @@ -1,5 +0,0 @@ -secret,b0,1 -secret,b1,0 -secret,b2,1 -secret,b3,1 -public,y,12 diff --git a/backend/groth16/testdata/bls381/frombinary.good b/backend/groth16/testdata/bls381/frombinary.good deleted file mode 100644 index 82a09d13b..000000000 --- a/backend/groth16/testdata/bls381/frombinary.good +++ /dev/null @@ -1,5 +0,0 @@ -secret,b0,1 -secret,b1,0 -secret,b2,1 -secret,b3,1 -public,y,13 diff --git a/backend/groth16/testdata/bls381/inv.bad b/backend/groth16/testdata/bls381/inv.bad deleted file mode 100644 index 75904c798..000000000 --- a/backend/groth16/testdata/bls381/inv.bad +++ /dev/null @@ -1,2 +0,0 @@ -public,y,42 -secret,x,4 diff --git a/backend/groth16/testdata/bls381/inv.good b/backend/groth16/testdata/bls381/inv.good deleted file mode 100644 index a52053c7c..000000000 --- a/backend/groth16/testdata/bls381/inv.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,4 -public,y,49158632976680803574482256726424342972834892969244660458690930031192419860481 diff --git a/backend/groth16/testdata/bls381/lut00.bad b/backend/groth16/testdata/bls381/lut00.bad deleted file mode 100644 index 3d92b469a..000000000 --- a/backend/groth16/testdata/bls381/lut00.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,z,11 diff --git a/backend/groth16/testdata/bls381/lut00.good b/backend/groth16/testdata/bls381/lut00.good deleted file mode 100644 index f27cb8517..000000000 --- a/backend/groth16/testdata/bls381/lut00.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,z,10 diff --git a/backend/groth16/testdata/bls381/lut01.bad b/backend/groth16/testdata/bls381/lut01.bad deleted file mode 100644 index ffe4cdf59..000000000 --- a/backend/groth16/testdata/bls381/lut01.bad +++ /dev/null @@ -1,3 +0,0 @@ -public,z,10 -secret,b0,1 -secret,b1,0 diff --git a/backend/groth16/testdata/bls381/lut01.good b/backend/groth16/testdata/bls381/lut01.good deleted file mode 100644 index 27f2c4032..000000000 --- a/backend/groth16/testdata/bls381/lut01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,z,12 diff --git a/backend/groth16/testdata/bls381/lut10.bad b/backend/groth16/testdata/bls381/lut10.bad deleted file mode 100644 index f60f713a7..000000000 --- a/backend/groth16/testdata/bls381/lut10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,z,11 diff --git a/backend/groth16/testdata/bls381/lut10.good b/backend/groth16/testdata/bls381/lut10.good deleted file mode 100644 index 6beacec52..000000000 --- a/backend/groth16/testdata/bls381/lut10.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,z,22 diff --git a/backend/groth16/testdata/bls381/lut11.bad b/backend/groth16/testdata/bls381/lut11.bad deleted file mode 100644 index dc0ae565a..000000000 --- a/backend/groth16/testdata/bls381/lut11.bad +++ /dev/null @@ -1,3 +0,0 @@ -public,z,9 -secret,b0,1 -secret,b1,1 diff --git a/backend/groth16/testdata/bls381/lut11.good b/backend/groth16/testdata/bls381/lut11.good deleted file mode 100644 index 176288c5d..000000000 --- a/backend/groth16/testdata/bls381/lut11.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,z,7 diff --git a/backend/groth16/testdata/bls381/range.bad b/backend/groth16/testdata/bls381/range.bad deleted file mode 100644 index 8be1df154..000000000 --- a/backend/groth16/testdata/bls381/range.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,5 diff --git a/backend/groth16/testdata/bls381/range.good b/backend/groth16/testdata/bls381/range.good deleted file mode 100644 index 96c7c31f9..000000000 --- a/backend/groth16/testdata/bls381/range.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,4 diff --git a/backend/groth16/testdata/bls381/reference.bad b/backend/groth16/testdata/bls381/reference.bad deleted file mode 100644 index 21f05d9ed..000000000 --- a/backend/groth16/testdata/bls381/reference.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,0 diff --git a/backend/groth16/testdata/bls381/reference.good b/backend/groth16/testdata/bls381/reference.good deleted file mode 100644 index 28a751fb4..000000000 --- a/backend/groth16/testdata/bls381/reference.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,10550798627270575842950473628129152558762242594439828314919630871923015180406 diff --git a/backend/groth16/testdata/bls381/reference_large.bad b/backend/groth16/testdata/bls381/reference_large.bad deleted file mode 100644 index 232e011d6..000000000 --- a/backend/groth16/testdata/bls381/reference_large.bad +++ /dev/null @@ -1,2 +0,0 @@ -public,y,0 -secret,x,2 diff --git a/backend/groth16/testdata/bls381/reference_large.good b/backend/groth16/testdata/bls381/reference_large.good deleted file mode 100644 index 28a751fb4..000000000 --- a/backend/groth16/testdata/bls381/reference_large.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,10550798627270575842950473628129152558762242594439828314919630871923015180406 diff --git a/backend/groth16/testdata/bls381/reference_small.bad b/backend/groth16/testdata/bls381/reference_small.bad deleted file mode 100644 index 21f05d9ed..000000000 --- a/backend/groth16/testdata/bls381/reference_small.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,0 diff --git a/backend/groth16/testdata/bls381/reference_small.good b/backend/groth16/testdata/bls381/reference_small.good deleted file mode 100644 index 3b63583ca..000000000 --- a/backend/groth16/testdata/bls381/reference_small.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,40343542354220269483022698380205068423974588835573415087815673249799877294679 diff --git a/backend/groth16/testdata/bls381/xor00.bad b/backend/groth16/testdata/bls381/xor00.bad deleted file mode 100644 index d71519c8d..000000000 --- a/backend/groth16/testdata/bls381/xor00.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,0 -public,y0,1 -secret,b0,0 diff --git a/backend/groth16/testdata/bls381/xor00.good b/backend/groth16/testdata/bls381/xor00.good deleted file mode 100644 index d4227083c..000000000 --- a/backend/groth16/testdata/bls381/xor00.good +++ /dev/null @@ -1,3 +0,0 @@ -public,y0,0 -secret,b0,0 -secret,b1,0 diff --git a/backend/groth16/testdata/bls381/xor01.bad b/backend/groth16/testdata/bls381/xor01.bad deleted file mode 100644 index 00ffe58e0..000000000 --- a/backend/groth16/testdata/bls381/xor01.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,y0,0 diff --git a/backend/groth16/testdata/bls381/xor01.good b/backend/groth16/testdata/bls381/xor01.good deleted file mode 100644 index f902bfbd9..000000000 --- a/backend/groth16/testdata/bls381/xor01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,y0,1 diff --git a/backend/groth16/testdata/bls381/xor10.bad b/backend/groth16/testdata/bls381/xor10.bad deleted file mode 100644 index 1c093ae9b..000000000 --- a/backend/groth16/testdata/bls381/xor10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,y0,0 diff --git a/backend/groth16/testdata/bls381/xor10.good b/backend/groth16/testdata/bls381/xor10.good deleted file mode 100644 index f5a6477de..000000000 --- a/backend/groth16/testdata/bls381/xor10.good +++ /dev/null @@ -1,3 +0,0 @@ -public,y0,1 -secret,b0,1 -secret,b1,0 diff --git a/backend/groth16/testdata/bls381/xor11.bad b/backend/groth16/testdata/bls381/xor11.bad deleted file mode 100644 index 237370af1..000000000 --- a/backend/groth16/testdata/bls381/xor11.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,y0,1 diff --git a/backend/groth16/testdata/bls381/xor11.good b/backend/groth16/testdata/bls381/xor11.good deleted file mode 100644 index 0fa78e768..000000000 --- a/backend/groth16/testdata/bls381/xor11.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,y0,0 diff --git a/backend/groth16/testdata/bn256/constant_ops.bad b/backend/groth16/testdata/bn256/constant_ops.bad deleted file mode 100644 index 5ec9c61ae..000000000 --- a/backend/groth16/testdata/bn256/constant_ops.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,12 -public,y,228 diff --git a/backend/groth16/testdata/bn256/constant_ops.good b/backend/groth16/testdata/bn256/constant_ops.good deleted file mode 100644 index a1947f564..000000000 --- a/backend/groth16/testdata/bn256/constant_ops.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,12 -public,y,230 diff --git a/backend/groth16/testdata/bn256/div.bad b/backend/groth16/testdata/bn256/div.bad deleted file mode 100644 index b627c6706..000000000 --- a/backend/groth16/testdata/bn256/div.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,4 -secret,y,10 -public,z,42 diff --git a/backend/groth16/testdata/bn256/div.good b/backend/groth16/testdata/bn256/div.good deleted file mode 100644 index 54c7d46ed..000000000 --- a/backend/groth16/testdata/bn256/div.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,4 -secret,y,10 -public,z,4377648574367855044449281149051455017709672880083206868739640837315161699125 diff --git a/backend/groth16/testdata/bn256/expo.bad b/backend/groth16/testdata/bn256/expo.bad deleted file mode 100644 index cb8e244d8..000000000 --- a/backend/groth16/testdata/bn256/expo.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,2 -secret,e,12 -public,y,4095 diff --git a/backend/groth16/testdata/bn256/expo.good b/backend/groth16/testdata/bn256/expo.good deleted file mode 100644 index c8e9a0d5d..000000000 --- a/backend/groth16/testdata/bn256/expo.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,2 -secret,e,12 -public,y,4096 diff --git a/backend/groth16/testdata/bn256/frombinary.bad b/backend/groth16/testdata/bn256/frombinary.bad deleted file mode 100644 index 8d107f396..000000000 --- a/backend/groth16/testdata/bn256/frombinary.bad +++ /dev/null @@ -1,5 +0,0 @@ -secret,b2,1 -secret,b3,1 -public,y,12 -secret,b0,1 -secret,b1,0 diff --git a/backend/groth16/testdata/bn256/frombinary.good b/backend/groth16/testdata/bn256/frombinary.good deleted file mode 100644 index 6ed260245..000000000 --- a/backend/groth16/testdata/bn256/frombinary.good +++ /dev/null @@ -1,5 +0,0 @@ -secret,b2,1 -secret,b3,1 -public,y,13 -secret,b0,1 -secret,b1,0 diff --git a/backend/groth16/testdata/bn256/inv.bad b/backend/groth16/testdata/bn256/inv.bad deleted file mode 100644 index 4dba10602..000000000 --- a/backend/groth16/testdata/bn256/inv.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,4 -public,y,42 diff --git a/backend/groth16/testdata/bn256/inv.good b/backend/groth16/testdata/bn256/inv.good deleted file mode 100644 index bcc6e8a0e..000000000 --- a/backend/groth16/testdata/bn256/inv.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,4 -public,y,20520227692349320520856005386178695395514091625390032197217066424914820464641 diff --git a/backend/groth16/testdata/bn256/lut00.bad b/backend/groth16/testdata/bn256/lut00.bad deleted file mode 100644 index 3d92b469a..000000000 --- a/backend/groth16/testdata/bn256/lut00.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,z,11 diff --git a/backend/groth16/testdata/bn256/lut00.good b/backend/groth16/testdata/bn256/lut00.good deleted file mode 100644 index f27cb8517..000000000 --- a/backend/groth16/testdata/bn256/lut00.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,z,10 diff --git a/backend/groth16/testdata/bn256/lut01.bad b/backend/groth16/testdata/bn256/lut01.bad deleted file mode 100644 index 1e599e686..000000000 --- a/backend/groth16/testdata/bn256/lut01.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,z,10 diff --git a/backend/groth16/testdata/bn256/lut01.good b/backend/groth16/testdata/bn256/lut01.good deleted file mode 100644 index c0e5f8815..000000000 --- a/backend/groth16/testdata/bn256/lut01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,0 -public,z,12 -secret,b0,1 diff --git a/backend/groth16/testdata/bn256/lut10.bad b/backend/groth16/testdata/bn256/lut10.bad deleted file mode 100644 index f60f713a7..000000000 --- a/backend/groth16/testdata/bn256/lut10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,z,11 diff --git a/backend/groth16/testdata/bn256/lut10.good b/backend/groth16/testdata/bn256/lut10.good deleted file mode 100644 index 378350253..000000000 --- a/backend/groth16/testdata/bn256/lut10.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,1 -public,z,22 -secret,b0,0 diff --git a/backend/groth16/testdata/bn256/lut11.bad b/backend/groth16/testdata/bn256/lut11.bad deleted file mode 100644 index 472428e73..000000000 --- a/backend/groth16/testdata/bn256/lut11.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,z,9 diff --git a/backend/groth16/testdata/bn256/lut11.good b/backend/groth16/testdata/bn256/lut11.good deleted file mode 100644 index 407f50e27..000000000 --- a/backend/groth16/testdata/bn256/lut11.good +++ /dev/null @@ -1,3 +0,0 @@ -public,z,7 -secret,b0,1 -secret,b1,1 diff --git a/backend/groth16/testdata/bn256/range.bad b/backend/groth16/testdata/bn256/range.bad deleted file mode 100644 index 8be1df154..000000000 --- a/backend/groth16/testdata/bn256/range.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,5 diff --git a/backend/groth16/testdata/bn256/range.good b/backend/groth16/testdata/bn256/range.good deleted file mode 100644 index 96c7c31f9..000000000 --- a/backend/groth16/testdata/bn256/range.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,4 diff --git a/backend/groth16/testdata/bn256/reference.bad b/backend/groth16/testdata/bn256/reference.bad deleted file mode 100644 index 232e011d6..000000000 --- a/backend/groth16/testdata/bn256/reference.bad +++ /dev/null @@ -1,2 +0,0 @@ -public,y,0 -secret,x,2 diff --git a/backend/groth16/testdata/bn256/reference.good b/backend/groth16/testdata/bn256/reference.good deleted file mode 100644 index 20abb5f01..000000000 --- a/backend/groth16/testdata/bn256/reference.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,12695889789742002374424711109971251752927843567007744907108392141179761008279 diff --git a/backend/groth16/testdata/bn256/reference_large.bad b/backend/groth16/testdata/bn256/reference_large.bad deleted file mode 100644 index 21f05d9ed..000000000 --- a/backend/groth16/testdata/bn256/reference_large.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,0 diff --git a/backend/groth16/testdata/bn256/reference_large.good b/backend/groth16/testdata/bn256/reference_large.good deleted file mode 100644 index 20abb5f01..000000000 --- a/backend/groth16/testdata/bn256/reference_large.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,12695889789742002374424711109971251752927843567007744907108392141179761008279 diff --git a/backend/groth16/testdata/bn256/reference_small.bad b/backend/groth16/testdata/bn256/reference_small.bad deleted file mode 100644 index 21f05d9ed..000000000 --- a/backend/groth16/testdata/bn256/reference_small.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,0 diff --git a/backend/groth16/testdata/bn256/reference_small.good b/backend/groth16/testdata/bn256/reference_small.good deleted file mode 100644 index f658a41ce..000000000 --- a/backend/groth16/testdata/bn256/reference_small.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,4025922287349130568395840980859202530593257837590508845953666602163692683418 diff --git a/backend/groth16/testdata/bn256/xor00.bad b/backend/groth16/testdata/bn256/xor00.bad deleted file mode 100644 index d71519c8d..000000000 --- a/backend/groth16/testdata/bn256/xor00.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,0 -public,y0,1 -secret,b0,0 diff --git a/backend/groth16/testdata/bn256/xor00.good b/backend/groth16/testdata/bn256/xor00.good deleted file mode 100644 index 33c22b9f2..000000000 --- a/backend/groth16/testdata/bn256/xor00.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,y0,0 diff --git a/backend/groth16/testdata/bn256/xor01.bad b/backend/groth16/testdata/bn256/xor01.bad deleted file mode 100644 index 00ffe58e0..000000000 --- a/backend/groth16/testdata/bn256/xor01.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,y0,0 diff --git a/backend/groth16/testdata/bn256/xor01.good b/backend/groth16/testdata/bn256/xor01.good deleted file mode 100644 index f902bfbd9..000000000 --- a/backend/groth16/testdata/bn256/xor01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,y0,1 diff --git a/backend/groth16/testdata/bn256/xor10.bad b/backend/groth16/testdata/bn256/xor10.bad deleted file mode 100644 index 1c093ae9b..000000000 --- a/backend/groth16/testdata/bn256/xor10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,y0,0 diff --git a/backend/groth16/testdata/bn256/xor10.good b/backend/groth16/testdata/bn256/xor10.good deleted file mode 100644 index ea7f83b60..000000000 --- a/backend/groth16/testdata/bn256/xor10.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,y0,1 diff --git a/backend/groth16/testdata/bn256/xor11.bad b/backend/groth16/testdata/bn256/xor11.bad deleted file mode 100644 index 237370af1..000000000 --- a/backend/groth16/testdata/bn256/xor11.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,y0,1 diff --git a/backend/groth16/testdata/bn256/xor11.good b/backend/groth16/testdata/bn256/xor11.good deleted file mode 100644 index 0fa78e768..000000000 --- a/backend/groth16/testdata/bn256/xor11.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,y0,0 diff --git a/backend/groth16/verify.go b/backend/groth16/verify.go deleted file mode 100644 index 2cdf47444..000000000 --- a/backend/groth16/verify.go +++ /dev/null @@ -1,91 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package groth16 - -import ( - "github.com/consensys/gnark/curve" - "github.com/consensys/gnark/curve/fr" - - "github.com/consensys/gnark/backend" - - constants "github.com/consensys/gnark/backend" -) - -// Verify verifies a proof -func Verify(proof *Proof, vk *VerifyingKey, inputs backend.Assignments) (bool, error) { - - c := curve.GetCurve() - - var kSum curve.G1Jac - var eKrsδ, eArBs, eKvkγ curve.PairingResult - chan1 := make(chan bool, 1) - chan2 := make(chan bool, 1) - - // e([Krs]1, -[δ]2) - go func() { - c.MillerLoop(proof.Krs, vk.G2.DeltaNeg, &eKrsδ) - chan1 <- true - }() - - // e([Ar]1, [Bs]2) - go func() { - c.MillerLoop(proof.Ar, proof.Bs, &eArBs) - chan2 <- true - }() - - kInputs, err := parsePublicInput(vk.PublicInputs, inputs) - if err != nil { - return false, err - } - <-kSum.MultiExp(c, vk.G1.K, kInputs) - - // e(Σx.[Kvk(t)]1, -[γ]2) - var kSumAff curve.G1Affine - kSum.ToAffineFromJac(&kSumAff) - - c.MillerLoop(kSumAff, vk.G2.GammaNeg, &eKvkγ) - - <-chan1 - <-chan2 - right := c.FinalExponentiation(&eKrsδ, &eArBs, &eKvkγ) - return vk.E.Equal(&right), nil -} - -// parsePublicInput return the ordered public input values -// in regular form (used as scalars for multi exponentiation) -func parsePublicInput(expectedNames []string, input backend.Assignments) ([]fr.Element, error) { - toReturn := make([]fr.Element, len(expectedNames)) - - // ensure we don't assign private inputs - publicInput := input.DiscardSecrets() - - for i := 0; i < len(expectedNames); i++ { - if expectedNames[i] == constants.OneWire { - // ONE_WIRE is a reserved name, it should not be set by the user - toReturn[i].SetOne() - toReturn[i].FromMont() - } else { - if val, ok := publicInput[expectedNames[i]]; ok { - toReturn[i] = val.Value.ToRegular() - } else { - return nil, constants.ErrInputNotSet - } - } - } - - return toReturn, nil -} diff --git a/backend/r1cs.go b/backend/r1cs.go deleted file mode 100644 index 5f9e364ee..000000000 --- a/backend/r1cs.go +++ /dev/null @@ -1,310 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package backend - -import ( - "fmt" - - "github.com/consensys/gnark/curve" - "github.com/consensys/gnark/curve/fr" - - "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/internal/utils/encoding/gob" -) - -// R1CS decsribes a set of R1CS constraint -type R1CS struct { - // Wires - NbWires int - NbPublicWires int // includes ONE wire - NbPrivateWires int - PrivateWires []string // private wire names - PublicWires []string // public wire names - WireTags map[int][]string // optional tags -- debug info - - // Constraints - NbConstraints int // total number of constraints - NbCOConstraints int // number of constraints that need to be solved, the first of the Constraints slice - Constraints []R1C -} - -// Solve sets all the wires and returns the a, b, c vectors. -// the r1cs system should have been compiled before. The entries in a, b, c are in Montgomery form. -// assignment: map[string]value: contains the input variables -// a, b, c vectors: ab-c = hz -// wireValues = [intermediateVariables | privateInputs | publicInputs] -func (r1cs *R1CS) Solve(assignment Assignments, a, b, c, wireValues []fr.Element) error { - - // compute the wires and the a, b, c polynomials - debug.Assert(len(a) == r1cs.NbConstraints) - debug.Assert(len(b) == r1cs.NbConstraints) - debug.Assert(len(c) == r1cs.NbConstraints) - debug.Assert(len(wireValues) == r1cs.NbWires) - - // keep track of wire that have a value - wireInstantiated := make([]bool, r1cs.NbWires) - - // instantiate the public/ private inputs - instantiateInputs := func(offset int, visibility Visibility, inputNames []string) error { - for i := 0; i < len(inputNames); i++ { - name := inputNames[i] - if name == OneWire { - wireValues[i+offset].SetOne() - wireInstantiated[i+offset] = true - } else { - if val, ok := assignment[name]; ok { - if visibility == Secret && val.IsPublic || visibility == Public && !val.IsPublic { - return fmt.Errorf("%q: %w", name, ErrInputVisiblity) - } - wireValues[i+offset].Set(&val.Value) - wireInstantiated[i+offset] = true - } else { - return fmt.Errorf("%q: %w", name, ErrInputNotSet) - } - } - } - return nil - } - // instantiate private inputs - debug.Assert(len(r1cs.PrivateWires) == r1cs.NbPrivateWires) - debug.Assert(len(r1cs.PublicWires) == r1cs.NbPublicWires) - if r1cs.NbPrivateWires != 0 { - offset := r1cs.NbWires - r1cs.NbPublicWires - r1cs.NbPrivateWires // private input start index - if err := instantiateInputs(offset, Secret, r1cs.PrivateWires); err != nil { - return err - } - } - // instantiate public inputs - { - offset := r1cs.NbWires - r1cs.NbPublicWires // public input start index - if err := instantiateInputs(offset, Public, r1cs.PublicWires); err != nil { - return err - } - } - - // check if there is an inconsistant constraint - var check fr.Element - - // Loop through the other Constraints - for i, r1c := range r1cs.Constraints { - - if i < r1cs.NbCOConstraints { - // computationalGraph : we need to solve the constraint - // computationalGraph[i] contains exactly one uncomputed wire (due - // to the graph being correctly ordered), we solve it - r1cs.Constraints[i].solveR1c(wireInstantiated, wireValues) - } - - // A this stage we are not guaranteed that a[i+sizecg]*b[i+sizecg]=c[i+sizecg] because we only query the values (computed - // at the previous step) - a[i], b[i], c[i] = r1c.instantiate(r1cs, wireValues) - - // check that the constraint is satisfied - check.Mul(&a[i], &b[i]) - if !check.Equal(&c[i]) { - invalidA := a[i] - invalidB := b[i] - invalidC := c[i] - - return fmt.Errorf("%w: %q * %q != %q", ErrUnsatisfiedConstraint, - invalidA.String(), - invalidB.String(), - invalidC.String()) - } - } - - return nil -} - -// Inspect returns the tagged variables with their corresponding value -func (r1cs *R1CS) Inspect(wireValues []fr.Element) (map[string]fr.Element, error) { - res := make(map[string]fr.Element) - - for wireID, tags := range r1cs.WireTags { - for _, tag := range tags { - if _, ok := res[tag]; ok { - // TODO checking duplicates should be done in the frontend, probably in cs.ToR1CS() - return nil, ErrDuplicateTag - } - res[tag] = wireValues[wireID] - } - - } - return res, nil -} - -// method to solve a r1cs -type solvingMethod int - -const ( - SingleOutput solvingMethod = iota - BinaryDec -) - -// Term lightweight version of a term, no pointers -type Term struct { - ID int64 // index of the constraint used to compute this wire - Coeff fr.Element // coefficient by which the wire is multiplied -} - -// LinearExpression lightweight version of linear expression -type LinearExpression []Term - -// R1C used to compute the wires (wo pointers) -type R1C struct { - L LinearExpression - R LinearExpression - O LinearExpression - Solver solvingMethod -} - -// compute left, right, o part of a r1cs constraint -// this function is called when all the wires have been computed -// it instantiates the l, r o part of a R1C -func (r1c *R1C) instantiate(r1cs *R1CS, wireValues []fr.Element) (a, b, c fr.Element) { - - var tmp fr.Element - - for _, t := range r1c.L { - debug.Assert(len(wireValues) > int(t.ID), "trying to access out of bound wire in wiretracker") - tmp.Mul(&t.Coeff, &wireValues[t.ID]) - a.Add(&a, &tmp) - } - - for _, t := range r1c.R { - debug.Assert(len(wireValues) > int(t.ID), "trying to access out of bound wire in wiretracker") - tmp.Mul(&t.Coeff, &wireValues[t.ID]) - b.Add(&b, &tmp) - } - - for _, t := range r1c.O { - debug.Assert(len(wireValues) > int(t.ID), "trying to access out of bound wire in wiretracker") - tmp.Mul(&t.Coeff, &wireValues[t.ID]) - c.Add(&c, &tmp) - } - - return -} - -// solveR1c computes a wire by solving a r1cs -// the function searches for the unset wire (either the unset wire is -// alone, or it can be computed without ambiguity using the other computed wires -// , eg when doing a binary decomposition: either way the missing wire can -// be computed without ambiguity because the r1cs is correctly ordered) -func (r1c *R1C) solveR1c(wireInstantiated []bool, wireValues []fr.Element) { - - switch r1c.Solver { - - // in this case we solve a R1C by isolating the uncomputed wire - case SingleOutput: - - // the index of the non zero entry shows if L, R or O has an uninstantiated wire - // the content is the ID of the wire non instantiated - location := [3]int64{-1, -1, -1} - - var tmp, a, b, c, backupCoeff fr.Element - - for _, t := range r1c.L { - if wireInstantiated[t.ID] { - tmp.Mul(&t.Coeff, &wireValues[t.ID]) - a.Add(&a, &tmp) - } else { - backupCoeff.Set(&t.Coeff) - location[0] = t.ID - } - } - - for _, t := range r1c.R { - if wireInstantiated[t.ID] { - tmp.Mul(&t.Coeff, &wireValues[t.ID]) - b.Add(&b, &tmp) - } else { - backupCoeff.Set(&t.Coeff) - location[1] = t.ID - } - } - - for _, t := range r1c.O { - if wireInstantiated[t.ID] { - tmp.Mul(&t.Coeff, &wireValues[t.ID]) - c.Add(&c, &tmp) - } else { - backupCoeff.Set(&t.Coeff) - location[2] = t.ID - } - } - - var zero fr.Element - - if location[0] != -1 { - id := location[0] - if b.Equal(&zero) { - wireValues[id].SetZero() - } else { - wireValues[id].Div(&c, &b). - Sub(&wireValues[id], &a). - Mul(&wireValues[id], &backupCoeff) - } - wireInstantiated[id] = true - } else if location[1] != -1 { - id := location[1] - if a.Equal(&zero) { - wireValues[id].SetZero() - } else { - wireValues[id].Div(&c, &a). - Sub(&wireValues[id], &b). - Mul(&wireValues[id], &backupCoeff) - } - wireInstantiated[id] = true - } else if location[2] != -1 { - id := location[2] - wireValues[id].Mul(&a, &b). - Sub(&wireValues[id], &c). - Mul(&wireValues[id], &backupCoeff) - wireInstantiated[id] = true - } - - // in the case the R1C is solved by directly computing the binary decomposition - // of the variable - case BinaryDec: - - // the binary decomposition must be called on the non Mont form of the number - n := wireValues[r1c.O[0].ID].ToRegular() - nbBits := len(r1c.L) - - // binary decomposition of n - var i, j int - for i*64 < nbBits { - j = 0 - for j < 64 && i*64+j < len(r1c.L) { - ithbit := (n[i] >> uint(j)) & 1 - if !wireInstantiated[r1c.L[i*64+j].ID] { - wireValues[r1c.L[i*64+j].ID].SetUint64(ithbit) - wireInstantiated[r1c.L[i*64+j].ID] = true - } - j++ - } - i++ - } - default: - panic("unimplemented solving method") - } -} - -func (r1cs *R1CS) Write(path string) error { - return gob.Write(path, r1cs, curve.ID) -} diff --git a/backend/static/bls377/assignment.go b/backend/static/bls377/assignment.go deleted file mode 100644 index 138bb3757..000000000 --- a/backend/static/bls377/assignment.go +++ /dev/null @@ -1,130 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package backend - -import ( - "bufio" - "encoding/csv" - "io" - "os" - "strings" - - "github.com/consensys/gurvy/bls377/fr" - - "github.com/consensys/gnark/backend" -) - -// Assignment is used to specify inputs to the Prove and Verify functions -type Assignment struct { - Value fr.Element - IsPublic bool // default == false (assignemnt is private) -} - -// Assignments is used to specify inputs to the Prove and Verify functions -type Assignments map[string]Assignment - -// NewAssignment returns an empty Assigments object -func NewAssignment() Assignments { - return make(Assignments) -} - -// Assign assign a value to a Secret/Public input identified by its name -func (a Assignments) Assign(visibility backend.Visibility, name string, v interface{}) { - if _, ok := a[name]; ok { - panic(name + " already assigned") - } - switch visibility { - case backend.Secret: - a[name] = Assignment{Value: fr.FromInterface(v)} - case backend.Public: - a[name] = Assignment{ - Value: fr.FromInterface(v), - IsPublic: true, - } - default: - panic("supported visibility attributes are SECRET and PUBLIC") - } -} - -// ReadFile parse r1cs.Assigments from given file -func (assignment Assignments) ReadFile(filePath string) error { - csvFile, err := os.Open(filePath) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Read(csvFile) -} - -// Read parse r1cs.Assigments from given io.Reader -func (assigment Assignments) Read(r io.Reader) error { - reader := csv.NewReader(bufio.NewReader(r)) - for { - line, err := reader.Read() - if err == io.EOF { - break - } else if err != nil { - return err - } else if len(line) != 3 { - return backend.ErrInvalidInputFormat - } - visibility := strings.ToLower(strings.TrimSpace(line[0])) - name := strings.TrimSpace(line[1]) - value := strings.TrimSpace(line[2]) - - assigment.Assign(backend.Visibility(visibility), name, value) - } - return nil -} - -// WriteFile serialize given assigment to disk -func (assignment Assignments) WriteFile(path string) error { - csvFile, err := os.Create(path) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Write(csvFile) -} - -// Write serialize given assigment to io.Writer -func (assignment Assignments) Write(w io.Writer) error { - writer := csv.NewWriter(w) - for k, v := range assignment { - r := v.Value - record := []string{string(backend.Secret), k, r.String()} - if v.IsPublic { - record[0] = string(backend.Public) - } - if err := writer.Write(record); err != nil { - return err - } - } - writer.Flush() - return nil -} - -// DiscardSecrets returns a copy of self without Secret Assigment -func (assignments Assignments) DiscardSecrets() Assignments { - toReturn := NewAssignment() - for k, v := range assignments { - if v.IsPublic { - toReturn[k] = v - } - } - return toReturn -} diff --git a/backend/static/bls381/assignment.go b/backend/static/bls381/assignment.go deleted file mode 100644 index a7d139a27..000000000 --- a/backend/static/bls381/assignment.go +++ /dev/null @@ -1,130 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package backend - -import ( - "bufio" - "encoding/csv" - "io" - "os" - "strings" - - "github.com/consensys/gurvy/bls381/fr" - - "github.com/consensys/gnark/backend" -) - -// Assignment is used to specify inputs to the Prove and Verify functions -type Assignment struct { - Value fr.Element - IsPublic bool // default == false (assignemnt is private) -} - -// Assignments is used to specify inputs to the Prove and Verify functions -type Assignments map[string]Assignment - -// NewAssignment returns an empty Assigments object -func NewAssignment() Assignments { - return make(Assignments) -} - -// Assign assign a value to a Secret/Public input identified by its name -func (a Assignments) Assign(visibility backend.Visibility, name string, v interface{}) { - if _, ok := a[name]; ok { - panic(name + " already assigned") - } - switch visibility { - case backend.Secret: - a[name] = Assignment{Value: fr.FromInterface(v)} - case backend.Public: - a[name] = Assignment{ - Value: fr.FromInterface(v), - IsPublic: true, - } - default: - panic("supported visibility attributes are SECRET and PUBLIC") - } -} - -// ReadFile parse r1cs.Assigments from given file -func (assignment Assignments) ReadFile(filePath string) error { - csvFile, err := os.Open(filePath) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Read(csvFile) -} - -// Read parse r1cs.Assigments from given io.Reader -func (assigment Assignments) Read(r io.Reader) error { - reader := csv.NewReader(bufio.NewReader(r)) - for { - line, err := reader.Read() - if err == io.EOF { - break - } else if err != nil { - return err - } else if len(line) != 3 { - return backend.ErrInvalidInputFormat - } - visibility := strings.ToLower(strings.TrimSpace(line[0])) - name := strings.TrimSpace(line[1]) - value := strings.TrimSpace(line[2]) - - assigment.Assign(backend.Visibility(visibility), name, value) - } - return nil -} - -// WriteFile serialize given assigment to disk -func (assignment Assignments) WriteFile(path string) error { - csvFile, err := os.Create(path) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Write(csvFile) -} - -// Write serialize given assigment to io.Writer -func (assignment Assignments) Write(w io.Writer) error { - writer := csv.NewWriter(w) - for k, v := range assignment { - r := v.Value - record := []string{string(backend.Secret), k, r.String()} - if v.IsPublic { - record[0] = string(backend.Public) - } - if err := writer.Write(record); err != nil { - return err - } - } - writer.Flush() - return nil -} - -// DiscardSecrets returns a copy of self without Secret Assigment -func (assignments Assignments) DiscardSecrets() Assignments { - toReturn := NewAssignment() - for k, v := range assignments { - if v.IsPublic { - toReturn[k] = v - } - } - return toReturn -} diff --git a/backend/static/bn256/assignment.go b/backend/static/bn256/assignment.go deleted file mode 100644 index d53fd22ca..000000000 --- a/backend/static/bn256/assignment.go +++ /dev/null @@ -1,130 +0,0 @@ -// Copyright 2020 ConsenSys AG -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Code generated by gnark/internal/generators DO NOT EDIT - -package backend - -import ( - "bufio" - "encoding/csv" - "io" - "os" - "strings" - - "github.com/consensys/gurvy/bn256/fr" - - "github.com/consensys/gnark/backend" -) - -// Assignment is used to specify inputs to the Prove and Verify functions -type Assignment struct { - Value fr.Element - IsPublic bool // default == false (assignemnt is private) -} - -// Assignments is used to specify inputs to the Prove and Verify functions -type Assignments map[string]Assignment - -// NewAssignment returns an empty Assigments object -func NewAssignment() Assignments { - return make(Assignments) -} - -// Assign assign a value to a Secret/Public input identified by its name -func (a Assignments) Assign(visibility backend.Visibility, name string, v interface{}) { - if _, ok := a[name]; ok { - panic(name + " already assigned") - } - switch visibility { - case backend.Secret: - a[name] = Assignment{Value: fr.FromInterface(v)} - case backend.Public: - a[name] = Assignment{ - Value: fr.FromInterface(v), - IsPublic: true, - } - default: - panic("supported visibility attributes are SECRET and PUBLIC") - } -} - -// ReadFile parse r1cs.Assigments from given file -func (assignment Assignments) ReadFile(filePath string) error { - csvFile, err := os.Open(filePath) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Read(csvFile) -} - -// Read parse r1cs.Assigments from given io.Reader -func (assigment Assignments) Read(r io.Reader) error { - reader := csv.NewReader(bufio.NewReader(r)) - for { - line, err := reader.Read() - if err == io.EOF { - break - } else if err != nil { - return err - } else if len(line) != 3 { - return backend.ErrInvalidInputFormat - } - visibility := strings.ToLower(strings.TrimSpace(line[0])) - name := strings.TrimSpace(line[1]) - value := strings.TrimSpace(line[2]) - - assigment.Assign(backend.Visibility(visibility), name, value) - } - return nil -} - -// WriteFile serialize given assigment to disk -func (assignment Assignments) WriteFile(path string) error { - csvFile, err := os.Create(path) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Write(csvFile) -} - -// Write serialize given assigment to io.Writer -func (assignment Assignments) Write(w io.Writer) error { - writer := csv.NewWriter(w) - for k, v := range assignment { - r := v.Value - record := []string{string(backend.Secret), k, r.String()} - if v.IsPublic { - record[0] = string(backend.Public) - } - if err := writer.Write(record); err != nil { - return err - } - } - writer.Flush() - return nil -} - -// DiscardSecrets returns a copy of self without Secret Assigment -func (assignments Assignments) DiscardSecrets() Assignments { - toReturn := NewAssignment() - for k, v := range assignments { - if v.IsPublic { - toReturn[k] = v - } - } - return toReturn -} diff --git a/internal/generators/backend/main.go b/internal/generators/backend/main.go index 27dd093bd..d004af21f 100644 --- a/internal/generators/backend/main.go +++ b/internal/generators/backend/main.go @@ -10,23 +10,19 @@ import ( //go:generate go run -tags debug main.go func main() { - generic := generator.GenerateData{ - RootPath: "../../../backend/", - Curve: "GENERIC", - } bls377 := generator.GenerateData{ - RootPath: "../../../backend/static/bls377/", + RootPath: "../../../backend/bls377/", Curve: "BLS377", } bls381 := generator.GenerateData{ - RootPath: "../../../backend/static/bls381/", + RootPath: "../../../backend/bls381/", Curve: "BLS381", } bn256 := generator.GenerateData{ - RootPath: "../../../backend/static/bn256/", + RootPath: "../../../backend/bn256/", Curve: "BN256", } - datas := []generator.GenerateData{generic, bls377, bls381, bn256} + datas := []generator.GenerateData{bls377, bls381, bn256} for _, d := range datas { if err := os.MkdirAll(d.RootPath+"groth16", 0700); err != nil { diff --git a/internal/generators/backend/template/algorithms/fft.go b/internal/generators/backend/template/algorithms/fft.go index b159c4c03..7cf785f8f 100644 --- a/internal/generators/backend/template/algorithms/fft.go +++ b/internal/generators/backend/template/algorithms/fft.go @@ -10,11 +10,11 @@ import ( {{ template "import_curve" . }} ) -// fft computes the discrete Fourier transform of a and stores the result in a. +// FFT computes the discrete Fourier transform of a and stores the result in a. // The result is in bit-reversed order. // len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. // The algorithm is recursive, decimation-in-frequency. [cite] -func fft(a []fr.Element, w fr.Element) { +func FFT(a []fr.Element, w fr.Element) { var wg sync.WaitGroup asyncFFT(a, w, &wg, 1) wg.Wait() @@ -92,21 +92,21 @@ func bitReverse(a []fr.Element) { // domain with a power of 2 cardinality // compute a field element of order 2x and store it in GeneratorSqRt // all other values can be derived from x, GeneratorSqrt -type domain struct { - generator fr.Element - generatorInv fr.Element - generatorSqRt fr.Element // generator of 2 adic subgroup of order 2*nb_constraints - generatorSqRtInv fr.Element - cardinality int - cardinalityInv fr.Element +type Domain struct { + Generator fr.Element + GeneratorInv fr.Element + GeneratorSqRt fr.Element // generator of 2 adic subgroup of order 2*nb_constraints + GeneratorSqRtInv fr.Element + Cardinality int + CardinalityInv fr.Element } // newDomain returns a subgroup with a power of 2 cardinality // cardinality >= m // compute a field element of order 2x and store it in GeneratorSqRt // all other values can be derived from x, GeneratorSqrt -func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { - subGroup := &domain{} +func NewDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *Domain { + subGroup := &Domain{} x := nextPowerOfTwo(uint(m)) // maxOderRoot is the largest power-of-two order for any element in the field @@ -117,14 +117,14 @@ func newDomain(rootOfUnity fr.Element, maxOrderRoot uint, m int) *domain { panic("m is too big: the required root of unity does not exist") } expo := uint64(1 << (maxOrderRoot - logx - 1)) - subGroup.generatorSqRt.Exp(rootOfUnity, expo) + subGroup.GeneratorSqRt.Exp(rootOfUnity, expo) // Generator = GeneratorSqRt^2 has order x - subGroup.generator.Mul(&subGroup.generatorSqRt, &subGroup.generatorSqRt) // order x - subGroup.cardinality = int(x) - subGroup.generatorSqRtInv.Inverse(&subGroup.generatorSqRt) - subGroup.generatorInv.Inverse(&subGroup.generator) - subGroup.cardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.cardinalityInv) + subGroup.Generator.Mul(&subGroup.GeneratorSqRt, &subGroup.GeneratorSqRt) // order x + subGroup.Cardinality = int(x) + subGroup.GeneratorSqRtInv.Inverse(&subGroup.GeneratorSqRt) + subGroup.GeneratorInv.Inverse(&subGroup.Generator) + subGroup.CardinalityInv.SetUint64(uint64(x)).Inverse(&subGroup.CardinalityInv) return subGroup } diff --git a/internal/generators/backend/template/generator/generator.go b/internal/generators/backend/template/generator/generator.go index 25c54e701..156c0c361 100644 --- a/internal/generators/backend/template/generator/generator.go +++ b/internal/generators/backend/template/generator/generator.go @@ -23,30 +23,18 @@ func GenerateGroth16(d GenerateData) error { fmt.Println() fmt.Println("generating groth16 backend for ", d.Curve) fmt.Println() + if d.Curve == "GENERIC" { + return nil + } - { + if d.Curve != "GENERIC" { // generate R1CS.go src := []string{ templates.ImportCurve, representations.R1CS, } if err := bavard.Generate(d.RootPath+"r1cs.go", src, d, - bavard.Package("backend"), - bavard.Apache2("ConsenSys AG", 2020), - bavard.GeneratedBy("gnark/internal/generators"), - ); err != nil { - return err - } - } - - { - // generate assignment.go - src := []string{ - templates.ImportCurve, - representations.Assignment, - } - if err := bavard.Generate(d.RootPath+"assignment.go", src, d, - bavard.Package("backend"), + bavard.Package("backend_"+strings.ToLower(d.Curve)), bavard.Apache2("ConsenSys AG", 2020), bavard.GeneratedBy("gnark/internal/generators"), ); err != nil { @@ -62,7 +50,7 @@ func GenerateGroth16(d GenerateData) error { zkpschemes.Groth16Setup, } if err := bavard.Generate(d.RootPath+"groth16/setup.go", src, d, - bavard.Package("groth16", "exposes zkSNARK (Groth16) 3 algorithms: Setup, Prove and Verify"), + bavard.Package("groth16"), bavard.Apache2("ConsenSys AG", 2020), bavard.GeneratedBy("gnark/internal/generators"), ); err != nil { @@ -105,8 +93,8 @@ func GenerateGroth16(d GenerateData) error { templates.ImportCurve, algorithms.FFT, } - if err := bavard.Generate(d.RootPath+"groth16/fft.go", src, d, - bavard.Package("groth16"), + if err := bavard.Generate(d.RootPath+"fft.go", src, d, + bavard.Package("backend_"+strings.ToLower(d.Curve)), bavard.Apache2("ConsenSys AG", 2020), bavard.GeneratedBy("gnark/internal/generators"), ); err != nil { diff --git a/internal/generators/backend/template/import_curve.go b/internal/generators/backend/template/import_curve.go index 3ffdc5783..f0da28352 100644 --- a/internal/generators/backend/template/import_curve.go +++ b/internal/generators/backend/template/import_curve.go @@ -20,13 +20,11 @@ curve "github.com/consensys/gurvy/bn256" {{ define "import_backend" }} {{if eq .Curve "BLS377"}} - "github.com/consensys/gnark/backend/static/bls377" +backend_{{toLower .Curve}} "github.com/consensys/gnark/backend/bls377" {{else if eq .Curve "BLS381"}} -"github.com/consensys/gnark/backend/static/bls381" +backend_{{toLower .Curve}} "github.com/consensys/gnark/backend/bls381" {{else if eq .Curve "BN256"}} -"github.com/consensys/gnark/backend/static/bn256" -{{else if eq .Curve "GENERIC"}} -"github.com/consensys/gnark/backend" +backend_{{toLower .Curve}} "github.com/consensys/gnark/backend/bn256" {{end}} {{end}} diff --git a/internal/generators/backend/template/representations/assignment.go b/internal/generators/backend/template/representations/assignment.go deleted file mode 100644 index b115f3a4d..000000000 --- a/internal/generators/backend/template/representations/assignment.go +++ /dev/null @@ -1,121 +0,0 @@ -package representations - -const Assignment = ` - -import ( - "bufio" - "encoding/csv" - "io" - "os" - "strings" - - {{ template "import_curve" . }} - {{if ne .Curve "GENERIC"}} - "github.com/consensys/gnark/backend" - {{end}} -) - - -// Assignment is used to specify inputs to the Prove and Verify functions -type Assignment struct { - Value fr.Element - IsPublic bool // default == false (assignemnt is private) -} - -// Assignments is used to specify inputs to the Prove and Verify functions -type Assignments map[string]Assignment - -// NewAssignment returns an empty Assigments object -func NewAssignment() Assignments { - return make(Assignments) -} - -// Assign assign a value to a Secret/Public input identified by its name -func (a Assignments) Assign(visibility {{if ne .Curve "GENERIC"}} backend.{{- end}}Visibility, name string, v interface{}) { - if _, ok := a[name]; ok { - panic(name + " already assigned") - } - switch visibility { - case {{if ne .Curve "GENERIC"}} backend.{{- end}}Secret: - a[name] = Assignment{Value: fr.FromInterface(v)} - case {{if ne .Curve "GENERIC"}} backend.{{- end}}Public: - a[name] = Assignment{ - Value: fr.FromInterface(v), - IsPublic: true, - } - default: - panic("supported visibility attributes are SECRET and PUBLIC") - } -} - -// ReadFile parse r1cs.Assigments from given file -func (assignment Assignments) ReadFile(filePath string) error { - csvFile, err := os.Open(filePath) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Read(csvFile) -} - -// Read parse r1cs.Assigments from given io.Reader -func (assigment Assignments) Read(r io.Reader) error { - reader := csv.NewReader(bufio.NewReader(r)) - for { - line, err := reader.Read() - if err == io.EOF { - break - } else if err != nil { - return err - } else if len(line) != 3 { - return {{if ne .Curve "GENERIC"}} backend.{{- end}}ErrInvalidInputFormat - } - visibility := strings.ToLower(strings.TrimSpace(line[0])) - name := strings.TrimSpace(line[1]) - value := strings.TrimSpace(line[2]) - - assigment.Assign({{if ne .Curve "GENERIC"}} backend.{{- end}}Visibility(visibility), name, value) - } - return nil -} - - -// WriteFile serialize given assigment to disk -func (assignment Assignments) WriteFile(path string) error { - csvFile, err := os.Create(path) - if err != nil { - return err - } - defer csvFile.Close() - return assignment.Write(csvFile) -} - -// Write serialize given assigment to io.Writer -func (assignment Assignments) Write(w io.Writer) error { - writer := csv.NewWriter(w) - for k, v := range assignment { - r := v.Value - record := []string{string({{if ne .Curve "GENERIC"}} backend.{{- end}}Secret), k, r.String()} - if v.IsPublic { - record[0] = string({{if ne .Curve "GENERIC"}} backend.{{- end}}Public) - } - if err := writer.Write(record); err != nil { - return err - } - } - writer.Flush() - return nil -} - -// DiscardSecrets returns a copy of self without Secret Assigment -func (assignments Assignments) DiscardSecrets() Assignments { - toReturn := NewAssignment() - for k, v := range assignments { - if v.IsPublic { - toReturn[k] = v - } - } - return toReturn -} - -` diff --git a/internal/generators/backend/template/representations/r1cs.go b/internal/generators/backend/template/representations/r1cs.go index 7b0f17511..1ea8f3f0e 100644 --- a/internal/generators/backend/template/representations/r1cs.go +++ b/internal/generators/backend/template/representations/r1cs.go @@ -10,6 +10,7 @@ import ( {{if ne .Curve "GENERIC"}} "github.com/consensys/gnark/backend" {{end}} + "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" "github.com/consensys/gnark/internal/utils/encoding/gob" ) @@ -30,12 +31,38 @@ type R1CS struct { Constraints []R1C } +// New return a typed R1CS with the curve from frontend.R1CS +func New(r1cs *frontend.R1CS) R1CS { + toReturn := R1CS{ + NbWires: r1cs.NbWires, + NbPublicWires: r1cs.NbPublicWires, + NbPrivateWires: r1cs.NbPrivateWires, + PrivateWires: r1cs.PrivateWires, + PublicWires: r1cs.PublicWires, + WireTags: r1cs.WireTags, + NbConstraints: r1cs.NbConstraints, + NbCOConstraints: r1cs.NbCOConstraints, + } + toReturn.Constraints = make([]R1C, len(r1cs.Constraints)) + for i := 0; i < len(r1cs.Constraints); i++ { + from := r1cs.Constraints[i] + toReturn.Constraints[i] = R1C{ + Solver: from.Solver, + L: make(LinearExpression, len(from.L)), + R: make(LinearExpression, len(from.R)), + O: make(LinearExpression, len(from.O)), + } + + } + return toReturn +} + // Solve sets all the wires and returns the a, b, c vectors. // the r1cs system should have been compiled before. The entries in a, b, c are in Montgomery form. // assignment: map[string]value: contains the input variables // a, b, c vectors: ab-c = hz // wireValues = [intermediateVariables | privateInputs | publicInputs] -func (r1cs *R1CS) Solve(assignment Assignments, a, b, c, wireValues []fr.Element) error { +func (r1cs *R1CS) Solve(assignment backend.Assignments, a, b, c, wireValues []fr.Element) error { // compute the wires and the a, b, c polynomials debug.Assert(len(a) == r1cs.NbConstraints) @@ -59,7 +86,7 @@ func (r1cs *R1CS) Solve(assignment Assignments, a, b, c, wireValues []fr.Element if visibility == {{if ne .Curve "GENERIC"}} backend.{{- end}}Secret && val.IsPublic || visibility == {{if ne .Curve "GENERIC"}} backend.{{- end}}Public && !val.IsPublic { return fmt.Errorf("%q: %w", name, {{if ne .Curve "GENERIC"}} backend.{{- end}}ErrInputVisiblity) } - wireValues[i+offset].Set(&val.Value) + wireValues[i+offset].SetBigInt(&val.Value) wireInstantiated[i+offset] = true } else { return fmt.Errorf("%q: %w", name, {{if ne .Curve "GENERIC"}} backend.{{- end}}ErrInputNotSet) @@ -158,7 +185,7 @@ type R1C struct { L LinearExpression R LinearExpression O LinearExpression - Solver solvingMethod + Solver frontend.SolvingMethod } // compute left, right, o part of a r1cs constraint @@ -199,7 +226,7 @@ func (r1c *R1C) solveR1c(wireInstantiated []bool, wireValues []fr.Element) { switch r1c.Solver { // in this case we solve a R1C by isolating the uncomputed wire - case SingleOutput: + case frontend.SingleOutput: // the index of the non zero entry shows if L, R or O has an uninstantiated wire // the content is the ID of the wire non instantiated @@ -269,7 +296,7 @@ func (r1c *R1C) solveR1c(wireInstantiated []bool, wireValues []fr.Element) { // in the case the R1C is solved by directly computing the binary decomposition // of the variable - case BinaryDec: + case frontend.BinaryDec: // the binary decomposition must be called on the non Mont form of the number n := wireValues[r1c.O[0].ID].ToRegular() diff --git a/internal/generators/backend/template/zkpschemes/groth16_assert.go b/internal/generators/backend/template/zkpschemes/groth16_assert.go index 84484fcf9..bb1f40579 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_assert.go +++ b/internal/generators/backend/template/zkpschemes/groth16_assert.go @@ -30,7 +30,7 @@ func NewAssert(t *testing.T) *Assert { // NotSolved check that a solution does NOT solve a circuit // error may be missing inputs or unsatisfied constraints // it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend.R1CS, solution backend.Assignments) { +func (assert *Assert) NotSolved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments) { // setup var pk ProvingKey @@ -46,7 +46,7 @@ func (assert *Assert) NotSolved(r1cs *backend.R1CS, solution backend.Assignments // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c // it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { +func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { // setup var pk ProvingKey diff --git a/internal/generators/backend/template/zkpschemes/groth16_prove.go b/internal/generators/backend/template/zkpschemes/groth16_prove.go index 37e476911..cafbc814c 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_prove.go +++ b/internal/generators/backend/template/zkpschemes/groth16_prove.go @@ -9,6 +9,7 @@ import ( "sync" "github.com/consensys/gnark/internal/utils/debug" "github.com/consensys/gnark/internal/utils/parallel" + "github.com/consensys/gnark/backend" ) @@ -32,11 +33,11 @@ func init() { } // Prove creates proof from a circuit -func Prove(r1cs *backend.R1CS, pk *ProvingKey, solution backend.Assignments) (*Proof, error) { +func Prove(r1cs *backend_{{toLower .Curve}}.R1CS, pk *ProvingKey, solution backend.Assignments) (*Proof, error) { proof := &Proof{} // fft domain (computeH) - fftDomain := newDomain(root, MaxOrder, r1cs.NbConstraints) + fftDomain := backend_{{toLower .Curve}}.NewDomain(root, MaxOrder, r1cs.NbConstraints) // sample random r and s var r, s, _r, _s fr.Element @@ -47,9 +48,9 @@ func Prove(r1cs *backend.R1CS, pk *ProvingKey, solution backend.Assignments) (*P // Solve the R1CS and compute the a, b, c vectors wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.cardinality) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) err := r1cs.Solve(solution, a, b, c, wireValues) if err != nil { return nil, err @@ -178,7 +179,7 @@ func computeAr1(pk *ProvingKey, _r fr.Element, wireValues []fr.Element, chToken return chResult } -func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { +func computeH(a, b, c []fr.Element, fftDomain *backend_{{toLower .Curve}}.Domain) <-chan []fr.Element { chResult := make(chan []fr.Element, 1) go func() { // H part of Krs @@ -191,7 +192,7 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { debug.Assert((n == len(b)) && (n == len(c))) // add padding - padding := make([]fr.Element, fftDomain.cardinality-n) + padding := make([]fr.Element, fftDomain.Cardinality-n) a = append(a, padding...) b = append(b, padding...) c = append(c, padding...) @@ -206,18 +207,18 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { // expTable[2] = fftDomain.GeneratorSqrt^2 * fftDomain.CardinalityInv // ... expTable := make([]fr.Element, n) - expTable[0] = fftDomain.cardinalityInv + expTable[0] = fftDomain.CardinalityInv var wgExpTable sync.WaitGroup // to ensure the pool is busy while the FFT splits, we schedule precomputation of the exp table // before the FFTs - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRt, expTable, &wgExpTable) + asyncExpTable(fftDomain.CardinalityInv, fftDomain.GeneratorSqRt, expTable, &wgExpTable) var wg sync.WaitGroup FFTa := func(s []fr.Element) { // FFT inverse - fft(s, fftDomain.generatorInv) + backend_{{toLower .Curve}}.FFT(s, fftDomain.GeneratorInv) // wait for the expTable to be pre-computed // in the nominal case, this is non-blocking as the expTable was scheduled before the FFT @@ -229,7 +230,7 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { }) // FFT coset - fft(s, fftDomain.generator) + backend_{{toLower .Curve}}.FFT(s, fftDomain.Generator) wg.Done() } wg.Add(3) @@ -256,10 +257,10 @@ func computeH(a, b, c []fr.Element, fftDomain *domain) <-chan []fr.Element { // expTable[0] = fftDomain.CardinalityInv // expTable[1] = fftDomain.GeneratorSqRtInv^1 * fftDomain.CardinalityInv // expTable[2] = fftDomain.GeneratorSqRtInv^2 * fftDomain.CardinalityInv - asyncExpTable(fftDomain.cardinalityInv, fftDomain.generatorSqRtInv, expTable, &wgExpTable) + asyncExpTable(fftDomain.CardinalityInv, fftDomain.GeneratorSqRtInv, expTable, &wgExpTable) // ifft_coset - fft(a, fftDomain.generatorInv) + backend_{{toLower .Curve}}.FFT(a, fftDomain.GeneratorInv) wgExpTable.Wait() // wait for pre-computation of exp table to be done parallel.Execute( n, func(start, end int) { diff --git a/internal/generators/backend/template/zkpschemes/groth16_setup.go b/internal/generators/backend/template/zkpschemes/groth16_setup.go index 9f3d05719..1575aa6a1 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_setup.go +++ b/internal/generators/backend/template/zkpschemes/groth16_setup.go @@ -22,6 +22,7 @@ const RootOfUnityStr = fr.RootOfUnityStr const MaxOrder = fr.MaxOrder {{end}} + // ProvingKey is used by a Groth16 prover to encode a proof of a statement type ProvingKey struct { // [α]1, [β]1, [δ]1 @@ -60,7 +61,7 @@ type VerifyingKey struct { } // Setup constructs the SRS -func Setup(r1cs *backend.R1CS, pk *ProvingKey, vk *VerifyingKey) { +func Setup(r1cs *backend_{{toLower .Curve}}.R1CS, pk *ProvingKey, vk *VerifyingKey) { /* Setup @@ -78,13 +79,13 @@ func Setup(r1cs *backend.R1CS, pk *ProvingKey, vk *VerifyingKey) { nbConstraints := r1cs.NbConstraints // Setting group for fft - gateGroup := newDomain(root, MaxOrder, nbConstraints) + gateGroup := backend_{{toLower .Curve}}.NewDomain(root, MaxOrder, nbConstraints) // initialize proving key pk.G1.A = make([]curve.G1Affine, nbWires) pk.G1.B = make([]curve.G1Affine, nbWires) pk.G1.K = make([]curve.G1Affine, r1cs.NbWires-r1cs.NbPublicWires) - pk.G1.Z = make([]curve.G1Affine, gateGroup.cardinality) + pk.G1.Z = make([]curve.G1Affine, gateGroup.Cardinality) pk.G2.B = make([]curve.G2Affine, nbWires) // initialize verifying key @@ -167,7 +168,7 @@ func setupToxicWaste(pk *ProvingKey, vk *VerifyingKey, tw toxicWaste) { } -func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { +func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *backend_{{toLower .Curve}}.Domain) { c := {{- if eq .Curve "GENERIC"}}curve.GetCurve(){{- else}}curve.{{.Curve}}(){{- end}} @@ -176,18 +177,18 @@ func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { var zdt fr.Element - zdt.Exp(tw.t, uint64(g.cardinality)). + zdt.Exp(tw.t, uint64(g.Cardinality)). Sub(&zdt, &one). Div(&zdt, &tw.delta) // sets Zdt to Zdt/delta - Zdt := make([]fr.Element, g.cardinality) - for i := 0; i < g.cardinality; i++ { + Zdt := make([]fr.Element, g.Cardinality) + for i := 0; i < g.Cardinality; i++ { Zdt[i] = zdt.ToRegular() zdt.MulAssign(&tw.t) } // Z(t) = [(t^j*Zd(t) / delta)] - parallel.Execute( g.cardinality, func(start, end int) { + parallel.Execute( g.Cardinality, func(start, end int) { var pkG1Z curve.G1Jac for j := start; j < end; j++ { pkG1Z.ScalarMulByGen(c, Zdt[j]) @@ -197,7 +198,7 @@ func setupWitnessPolynomial(pk *ProvingKey, tw toxicWaste, g *domain) { } -func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B []fr.Element, C []fr.Element) { +func setupABC(r1cs *backend_{{toLower .Curve}}.R1CS, g *backend_{{toLower .Curve}}.Domain, tw toxicWaste) (A []fr.Element, B []fr.Element, C []fr.Element) { nbWires := r1cs.NbWires @@ -213,16 +214,16 @@ func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B [ // L0 = 1/n*(t^n-1)/(t-1), Li+1 = w*Li*(t-w^i)/(t-w^(i+1)) var w, wi, tmp fr.Element - w.Set(&g.generator) + w.Set(&g.Generator) wi.SetOne() // Setting L0 ithLagrangePolt.Set(&tw.t) - ithLagrangePolt.Exp(ithLagrangePolt, uint64(g.cardinality)). + ithLagrangePolt.Exp(ithLagrangePolt, uint64(g.Cardinality)). Sub(&ithLagrangePolt, &one) tmp.Set(&tw.t).Sub(&tmp, &one) ithLagrangePolt.Div(&ithLagrangePolt, &tmp). - Mul(&ithLagrangePolt, &g.cardinalityInv) + Mul(&ithLagrangePolt, &g.CardinalityInv) // Constraints for _, c := range r1cs.Constraints { @@ -252,7 +253,7 @@ func setupABC(r1cs *backend.R1CS, g *domain, tw toxicWaste) (A []fr.Element, B [ } -func setupKeyVectors(A, B, C []fr.Element, pk *ProvingKey, vk *VerifyingKey, tw toxicWaste, r1cs *backend.R1CS) { +func setupKeyVectors(A, B, C []fr.Element, pk *ProvingKey, vk *VerifyingKey, tw toxicWaste, r1cs *backend_{{toLower .Curve}}.R1CS) { c := {{- if eq .Curve "GENERIC"}}curve.GetCurve(){{- else}}curve.{{.Curve}}(){{- end}} diff --git a/internal/generators/backend/template/zkpschemes/groth16_verify.go b/internal/generators/backend/template/zkpschemes/groth16_verify.go index 5d0ce57cb..ace174424 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_verify.go +++ b/internal/generators/backend/template/zkpschemes/groth16_verify.go @@ -5,7 +5,7 @@ const Groth16Verify = ` import ( {{ template "import_curve" . }} {{ template "import_backend" . }} - constants "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/backend" ) @@ -58,15 +58,15 @@ func parsePublicInput(expectedNames []string, input backend.Assignments) ([]fr.E publicInput := input.DiscardSecrets() for i := 0; i < len(expectedNames); i++ { - if expectedNames[i] == constants.OneWire { + if expectedNames[i] == backend.OneWire { // ONE_WIRE is a reserved name, it should not be set by the user toReturn[i].SetOne() toReturn[i].FromMont() } else { if val, ok := publicInput[expectedNames[i]]; ok { - toReturn[i] = val.Value.ToRegular() + toReturn[i].SetBigInt(&val.Value).FromMont() } else { - return nil, constants.ErrInputNotSet + return nil, backend.ErrInputNotSet } } } diff --git a/internal/generators/backend/template/zkpschemes/tests_groth16.go b/internal/generators/backend/template/zkpschemes/tests_groth16.go index 0d67eee3d..dc133af7a 100644 --- a/internal/generators/backend/template/zkpschemes/tests_groth16.go +++ b/internal/generators/backend/template/zkpschemes/tests_groth16.go @@ -12,7 +12,7 @@ import ( "github.com/consensys/gnark/internal/utils/encoding/gob" - constants "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/backend" {{if ne .Curve "GENERIC"}} "reflect" @@ -48,7 +48,7 @@ func TestCircuits(t *testing.T) { if err := bad.ReadFile(name + ".bad"); err != nil { t.Fatal(err) } - var r1cs backend.R1CS + var r1cs backend_{{toLower .Curve}}.R1CS if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { t.Fatal(err) @@ -63,13 +63,13 @@ func TestParsePublicInput(t *testing.T) { expectedNames := [2]string{"data", "ONE_WIRE"} inputOneWire := backend.NewAssignment() - inputOneWire.Assign(constants.Public, "ONE_WIRE", 3) + inputOneWire.Assign(backend.Public, "ONE_WIRE", 3) if _, err := parsePublicInput(expectedNames[:], inputOneWire); err == nil { t.Fatal("expected ErrMissingAssigment error") } inputPrivate := backend.NewAssignment() - inputPrivate.Assign(constants.Secret, "data", 3) + inputPrivate.Assign(backend.Secret, "data", 3) if _, err := parsePublicInput(expectedNames[:], inputPrivate); err == nil { t.Fatal("expected ErrMissingAssigment error") } @@ -80,7 +80,7 @@ func TestParsePublicInput(t *testing.T) { } correctInput := backend.NewAssignment() - correctInput.Assign(constants.Public, "data", 3) + correctInput.Assign(backend.Public, "data", 3) got, err := parsePublicInput(expectedNames[:], correctInput) if err != nil { t.Fatal(err) @@ -104,7 +104,7 @@ func TestParsePublicInput(t *testing.T) { // benches // //--------------------// -func referenceCircuit() (backend.R1CS, backend.Assignments, backend.Assignments) { +func referenceCircuit() (backend_{{toLower .Curve}}.R1CS, backend.Assignments, backend.Assignments) { {{if eq .Curve "GENERIC"}} name := "./testdata/" + strings.ToLower(curve.ID.String()) + "/reference_large" {{else}} @@ -119,7 +119,7 @@ func referenceCircuit() (backend.R1CS, backend.Assignments, backend.Assignments) if err := bad.ReadFile(name + ".bad"); err != nil { panic(err) } - var r1cs backend.R1CS + var r1cs backend_{{toLower .Curve}}.R1CS if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { panic(err) diff --git a/internal/generators/testcircuits/circuits/circuits.go b/internal/generators/testcircuits/circuits/circuits.go index 1fd147579..7f91afffa 100644 --- a/internal/generators/testcircuits/circuits/circuits.go +++ b/internal/generators/testcircuits/circuits/circuits.go @@ -3,16 +3,17 @@ package circuits import ( "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" ) type TestCircuit struct { - R1CS *backend.R1CS + R1CS *frontend.R1CS Good, Bad backend.Assignments } var Circuits map[string]TestCircuit -func addEntry(name string, r1cs *backend.R1CS, good, bad backend.Assignments) { +func addEntry(name string, r1cs *frontend.R1CS, good, bad backend.Assignments) { if Circuits == nil { Circuits = make(map[string]TestCircuit) } diff --git a/internal/generators/testcircuits/circuits/lut00.go b/internal/generators/testcircuits/circuits/lut00.go index 8e5e03f6e..74491d549 100644 --- a/internal/generators/testcircuits/circuits/lut00.go +++ b/internal/generators/testcircuits/circuits/lut00.go @@ -1,8 +1,9 @@ package circuits import ( + "math/big" + "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" ) @@ -17,7 +18,7 @@ func init() { circuit.MUSTBE_BOOLEAN(b0) circuit.MUSTBE_BOOLEAN(b1) - var lookuptable [4]fr.Element + var lookuptable [4]big.Int lookuptable[0].SetUint64(10) lookuptable[1].SetUint64(12) diff --git a/internal/generators/testcircuits/circuits/lut01.go b/internal/generators/testcircuits/circuits/lut01.go index 9cc6a0d32..75e0fbf65 100644 --- a/internal/generators/testcircuits/circuits/lut01.go +++ b/internal/generators/testcircuits/circuits/lut01.go @@ -1,8 +1,9 @@ package circuits import ( + "math/big" + "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" ) @@ -17,7 +18,7 @@ func init() { circuit.MUSTBE_BOOLEAN(b0) circuit.MUSTBE_BOOLEAN(b1) - var lookuptable [4]fr.Element + var lookuptable [4]big.Int lookuptable[0].SetUint64(10) lookuptable[1].SetUint64(12) diff --git a/internal/generators/testcircuits/circuits/lut10.go b/internal/generators/testcircuits/circuits/lut10.go index 462fcc15c..50b07a46f 100644 --- a/internal/generators/testcircuits/circuits/lut10.go +++ b/internal/generators/testcircuits/circuits/lut10.go @@ -1,8 +1,9 @@ package circuits import ( + "math/big" + "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" ) @@ -17,7 +18,7 @@ func init() { circuit.MUSTBE_BOOLEAN(b0) circuit.MUSTBE_BOOLEAN(b1) - var lookuptable [4]fr.Element + var lookuptable [4]big.Int lookuptable[0].SetUint64(10) lookuptable[1].SetUint64(12) diff --git a/internal/generators/testcircuits/circuits/lut11.go b/internal/generators/testcircuits/circuits/lut11.go index fbbc7cf70..8d1ef07ff 100644 --- a/internal/generators/testcircuits/circuits/lut11.go +++ b/internal/generators/testcircuits/circuits/lut11.go @@ -1,8 +1,9 @@ package circuits import ( + "math/big" + "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" ) @@ -17,7 +18,7 @@ func init() { circuit.MUSTBE_BOOLEAN(b0) circuit.MUSTBE_BOOLEAN(b1) - var lookuptable [4]fr.Element + var lookuptable [4]big.Int lookuptable[0].SetUint64(10) lookuptable[1].SetUint64(12) From 9bd28bbcc2013024aaa80be01b5da29375ceaa6a Mon Sep 17 00:00:00 2001 From: Gautam Botrel Date: Thu, 2 Apr 2020 21:43:07 -0500 Subject: [PATCH 03/19] backend/: checkpoint refactoring --- backend/bls377/fft.go | 5 +++++ backend/bls377/fft_test.go | 5 +---- backend/bls377/groth16/computeh_test.go | 10 +++++----- backend/bls377/groth16/prove.go | 4 ++-- backend/bls377/groth16/setup.go | 5 +---- backend/bls381/fft.go | 5 +++++ backend/bls381/groth16/prove.go | 4 ++-- backend/bls381/groth16/setup.go | 5 +---- backend/bn256/fft.go | 5 +++++ backend/bn256/groth16/prove.go | 4 ++-- backend/bn256/groth16/setup.go | 5 +---- .../backend/template/algorithms/fft.go | 12 ++++++++++++ .../template/zkpschemes/groth16_prove.go | 4 ++-- .../template/zkpschemes/groth16_setup.go | 17 +---------------- 14 files changed, 45 insertions(+), 45 deletions(-) diff --git a/backend/bls377/fft.go b/backend/bls377/fft.go index 8a30cfa42..269fb00d1 100644 --- a/backend/bls377/fft.go +++ b/backend/bls377/fft.go @@ -24,6 +24,11 @@ import ( "github.com/consensys/gurvy/bls377/fr" ) +// TODO this should not be in fft.go + +const RootOfUnityStr = "8065159656716812877374967518403273466521432693661810619979959746626482506078" +const MaxOrder = 47 + // FFT computes the discrete Fourier transform of a and stores the result in a. // The result is in bit-reversed order. // len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. diff --git a/backend/bls377/fft_test.go b/backend/bls377/fft_test.go index 4bc26da4d..222708029 100644 --- a/backend/bls377/fft_test.go +++ b/backend/bls377/fft_test.go @@ -21,12 +21,9 @@ package backend_bls377 import ( "testing" - "github.com/consensys/gnark/curve/fr" + "github.com/consensys/gurvy/bls377/fr" ) -const RootOfUnityStr = fr.RootOfUnityStr -const MaxOrder = fr.MaxOrder - func TestFFT(t *testing.T) { var w, winv fr.Element diff --git a/backend/bls377/groth16/computeh_test.go b/backend/bls377/groth16/computeh_test.go index 10307064a..77c884c2f 100644 --- a/backend/bls377/groth16/computeh_test.go +++ b/backend/bls377/groth16/computeh_test.go @@ -6,7 +6,7 @@ import ( "testing" backend_bls377 "github.com/consensys/gnark/backend/bls377" - "github.com/consensys/gnark/curve/fr" + "github.com/consensys/gurvy/bls377/fr" ) func TestComputeH(t *testing.T) { @@ -62,8 +62,8 @@ func TestComputeH(t *testing.T) { expectedH[14].SetString("5823956675647904867599193233987686189497459491984483713315208960253899989011") expectedH[15].SetString("3920524502188845982638454764913867261210845354831386460279061209446868519983") var rootOfUnity fr.Element - rootOfUnity.SetString(fr.RootOfUnityStr) - fftDomain := backend_bls377.NewDomain(rootOfUnity, fr.MaxOrder, n) + rootOfUnity.SetString(backend_bls377.RootOfUnityStr) + fftDomain := backend_bls377.NewDomain(rootOfUnity, backend_bls377.MaxOrder, n) h := <-computeH(A, B, C, fftDomain) for i := 0; i < len(h); i++ { if !h[i].Equal(&expectedH[i]) { @@ -84,8 +84,8 @@ func BenchmarkComputeH(b *testing.B) { C[i].SetRandom() } var rootOfUnity fr.Element - rootOfUnity.SetString(fr.RootOfUnityStr) - fftDomain := backend_bls377.NewDomain(rootOfUnity, fr.MaxOrder, n) + rootOfUnity.SetString(backend_bls377.RootOfUnityStr) + fftDomain := backend_bls377.NewDomain(rootOfUnity, backend_bls377.MaxOrder, n) b.ResetTimer() for i := 0; i < b.N; i++ { diff --git a/backend/bls377/groth16/prove.go b/backend/bls377/groth16/prove.go index 0d1f9ec1d..f8c48f8cd 100644 --- a/backend/bls377/groth16/prove.go +++ b/backend/bls377/groth16/prove.go @@ -43,7 +43,7 @@ var ( ) func init() { - root.SetString(RootOfUnityStr) + root.SetString(backend_bls377.RootOfUnityStr) minusTwoInv.SetUint64(2) minusTwoInv.Neg(&minusTwoInv). Inverse(&minusTwoInv) @@ -54,7 +54,7 @@ func Prove(r1cs *backend_bls377.R1CS, pk *ProvingKey, solution backend.Assignmen proof := &Proof{} // fft domain (computeH) - fftDomain := backend_bls377.NewDomain(root, MaxOrder, r1cs.NbConstraints) + fftDomain := backend_bls377.NewDomain(root, backend_bls377.MaxOrder, r1cs.NbConstraints) // sample random r and s var r, s, _r, _s fr.Element diff --git a/backend/bls377/groth16/setup.go b/backend/bls377/groth16/setup.go index eb11d6ac3..07e67ce4d 100644 --- a/backend/bls377/groth16/setup.go +++ b/backend/bls377/groth16/setup.go @@ -25,9 +25,6 @@ import ( backend_bls377 "github.com/consensys/gnark/backend/bls377" ) -const RootOfUnityStr = "8065159656716812877374967518403273466521432693661810619979959746626482506078" -const MaxOrder = 47 - // ProvingKey is used by a Groth16 prover to encode a proof of a statement type ProvingKey struct { // [α]1, [β]1, [δ]1 @@ -84,7 +81,7 @@ func Setup(r1cs *backend_bls377.R1CS, pk *ProvingKey, vk *VerifyingKey) { nbConstraints := r1cs.NbConstraints // Setting group for fft - gateGroup := backend_bls377.NewDomain(root, MaxOrder, nbConstraints) + gateGroup := backend_bls377.NewDomain(root, backend_bls377.MaxOrder, nbConstraints) // initialize proving key pk.G1.A = make([]curve.G1Affine, nbWires) diff --git a/backend/bls381/fft.go b/backend/bls381/fft.go index f8fc185ba..9fbc5a096 100644 --- a/backend/bls381/fft.go +++ b/backend/bls381/fft.go @@ -24,6 +24,11 @@ import ( "github.com/consensys/gurvy/bls381/fr" ) +// TODO this should not be in fft.go + +const RootOfUnityStr = "10238227357739495823651030575849232062558860180284477541189508159991286009131" +const MaxOrder = 32 + // FFT computes the discrete Fourier transform of a and stores the result in a. // The result is in bit-reversed order. // len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. diff --git a/backend/bls381/groth16/prove.go b/backend/bls381/groth16/prove.go index 75f39072d..4449183c7 100644 --- a/backend/bls381/groth16/prove.go +++ b/backend/bls381/groth16/prove.go @@ -43,7 +43,7 @@ var ( ) func init() { - root.SetString(RootOfUnityStr) + root.SetString(backend_bls381.RootOfUnityStr) minusTwoInv.SetUint64(2) minusTwoInv.Neg(&minusTwoInv). Inverse(&minusTwoInv) @@ -54,7 +54,7 @@ func Prove(r1cs *backend_bls381.R1CS, pk *ProvingKey, solution backend.Assignmen proof := &Proof{} // fft domain (computeH) - fftDomain := backend_bls381.NewDomain(root, MaxOrder, r1cs.NbConstraints) + fftDomain := backend_bls381.NewDomain(root, backend_bls381.MaxOrder, r1cs.NbConstraints) // sample random r and s var r, s, _r, _s fr.Element diff --git a/backend/bls381/groth16/setup.go b/backend/bls381/groth16/setup.go index 0c15acf81..77687fb48 100644 --- a/backend/bls381/groth16/setup.go +++ b/backend/bls381/groth16/setup.go @@ -25,9 +25,6 @@ import ( backend_bls381 "github.com/consensys/gnark/backend/bls381" ) -const RootOfUnityStr = "10238227357739495823651030575849232062558860180284477541189508159991286009131" -const MaxOrder = 32 - // ProvingKey is used by a Groth16 prover to encode a proof of a statement type ProvingKey struct { // [α]1, [β]1, [δ]1 @@ -84,7 +81,7 @@ func Setup(r1cs *backend_bls381.R1CS, pk *ProvingKey, vk *VerifyingKey) { nbConstraints := r1cs.NbConstraints // Setting group for fft - gateGroup := backend_bls381.NewDomain(root, MaxOrder, nbConstraints) + gateGroup := backend_bls381.NewDomain(root, backend_bls381.MaxOrder, nbConstraints) // initialize proving key pk.G1.A = make([]curve.G1Affine, nbWires) diff --git a/backend/bn256/fft.go b/backend/bn256/fft.go index 8c3e8cdbf..754e2f40a 100644 --- a/backend/bn256/fft.go +++ b/backend/bn256/fft.go @@ -24,6 +24,11 @@ import ( "github.com/consensys/gurvy/bn256/fr" ) +// TODO this should not be in fft.go + +const RootOfUnityStr = "19103219067921713944291392827692070036145651957329286315305642004821462161904" +const MaxOrder = 28 + // FFT computes the discrete Fourier transform of a and stores the result in a. // The result is in bit-reversed order. // len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. diff --git a/backend/bn256/groth16/prove.go b/backend/bn256/groth16/prove.go index c3b57477d..721bd5281 100644 --- a/backend/bn256/groth16/prove.go +++ b/backend/bn256/groth16/prove.go @@ -43,7 +43,7 @@ var ( ) func init() { - root.SetString(RootOfUnityStr) + root.SetString(backend_bn256.RootOfUnityStr) minusTwoInv.SetUint64(2) minusTwoInv.Neg(&minusTwoInv). Inverse(&minusTwoInv) @@ -54,7 +54,7 @@ func Prove(r1cs *backend_bn256.R1CS, pk *ProvingKey, solution backend.Assignment proof := &Proof{} // fft domain (computeH) - fftDomain := backend_bn256.NewDomain(root, MaxOrder, r1cs.NbConstraints) + fftDomain := backend_bn256.NewDomain(root, backend_bn256.MaxOrder, r1cs.NbConstraints) // sample random r and s var r, s, _r, _s fr.Element diff --git a/backend/bn256/groth16/setup.go b/backend/bn256/groth16/setup.go index 57102aab1..2274e62c5 100644 --- a/backend/bn256/groth16/setup.go +++ b/backend/bn256/groth16/setup.go @@ -25,9 +25,6 @@ import ( backend_bn256 "github.com/consensys/gnark/backend/bn256" ) -const RootOfUnityStr = "19103219067921713944291392827692070036145651957329286315305642004821462161904" -const MaxOrder = 28 - // ProvingKey is used by a Groth16 prover to encode a proof of a statement type ProvingKey struct { // [α]1, [β]1, [δ]1 @@ -84,7 +81,7 @@ func Setup(r1cs *backend_bn256.R1CS, pk *ProvingKey, vk *VerifyingKey) { nbConstraints := r1cs.NbConstraints // Setting group for fft - gateGroup := backend_bn256.NewDomain(root, MaxOrder, nbConstraints) + gateGroup := backend_bn256.NewDomain(root, backend_bn256.MaxOrder, nbConstraints) // initialize proving key pk.G1.A = make([]curve.G1Affine, nbWires) diff --git a/internal/generators/backend/template/algorithms/fft.go b/internal/generators/backend/template/algorithms/fft.go index 7cf785f8f..3e95fc879 100644 --- a/internal/generators/backend/template/algorithms/fft.go +++ b/internal/generators/backend/template/algorithms/fft.go @@ -10,6 +10,18 @@ import ( {{ template "import_curve" . }} ) +// TODO this should not be in fft.go +{{if eq .Curve "BLS377"}} +const RootOfUnityStr = "8065159656716812877374967518403273466521432693661810619979959746626482506078" +const MaxOrder = 47 +{{else if eq .Curve "BLS381"}} +const RootOfUnityStr = "10238227357739495823651030575849232062558860180284477541189508159991286009131" +const MaxOrder = 32 +{{else if eq .Curve "BN256"}} +const RootOfUnityStr = "19103219067921713944291392827692070036145651957329286315305642004821462161904" +const MaxOrder = 28 +{{end}} + // FFT computes the discrete Fourier transform of a and stores the result in a. // The result is in bit-reversed order. // len(a) must be a power of 2, and w must be a len(a)th root of unity in field F. diff --git a/internal/generators/backend/template/zkpschemes/groth16_prove.go b/internal/generators/backend/template/zkpschemes/groth16_prove.go index cafbc814c..dac6b4972 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_prove.go +++ b/internal/generators/backend/template/zkpschemes/groth16_prove.go @@ -26,7 +26,7 @@ var ( ) func init() { - root.SetString(RootOfUnityStr) + root.SetString(backend_{{toLower .Curve}}.RootOfUnityStr) minusTwoInv.SetUint64(2) minusTwoInv.Neg(&minusTwoInv). Inverse(&minusTwoInv) @@ -37,7 +37,7 @@ func Prove(r1cs *backend_{{toLower .Curve}}.R1CS, pk *ProvingKey, solution backe proof := &Proof{} // fft domain (computeH) - fftDomain := backend_{{toLower .Curve}}.NewDomain(root, MaxOrder, r1cs.NbConstraints) + fftDomain := backend_{{toLower .Curve}}.NewDomain(root, backend_{{toLower .Curve}}.MaxOrder, r1cs.NbConstraints) // sample random r and s var r, s, _r, _s fr.Element diff --git a/internal/generators/backend/template/zkpschemes/groth16_setup.go b/internal/generators/backend/template/zkpschemes/groth16_setup.go index 1575aa6a1..9e0edd077 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_setup.go +++ b/internal/generators/backend/template/zkpschemes/groth16_setup.go @@ -8,21 +8,6 @@ import ( {{ template "import_backend" . }} ) -{{if eq .Curve "BLS377"}} -const RootOfUnityStr = "8065159656716812877374967518403273466521432693661810619979959746626482506078" -const MaxOrder = 47 -{{else if eq .Curve "BLS381"}} -const RootOfUnityStr = "10238227357739495823651030575849232062558860180284477541189508159991286009131" -const MaxOrder = 32 -{{else if eq .Curve "BN256"}} -const RootOfUnityStr = "19103219067921713944291392827692070036145651957329286315305642004821462161904" -const MaxOrder = 28 -{{ else if eq .Curve "GENERIC"}} -const RootOfUnityStr = fr.RootOfUnityStr -const MaxOrder = fr.MaxOrder -{{end}} - - // ProvingKey is used by a Groth16 prover to encode a proof of a statement type ProvingKey struct { // [α]1, [β]1, [δ]1 @@ -79,7 +64,7 @@ func Setup(r1cs *backend_{{toLower .Curve}}.R1CS, pk *ProvingKey, vk *VerifyingK nbConstraints := r1cs.NbConstraints // Setting group for fft - gateGroup := backend_{{toLower .Curve}}.NewDomain(root, MaxOrder, nbConstraints) + gateGroup := backend_{{toLower .Curve}}.NewDomain(root, backend_{{toLower .Curve}}.MaxOrder, nbConstraints) // initialize proving key pk.G1.A = make([]curve.G1Affine, nbWires) From 299e7d53a448929369cbb1cdb3e2ba85b8e9ab74 Mon Sep 17 00:00:00 2001 From: Gautam Botrel Date: Thu, 2 Apr 2020 22:09:32 -0500 Subject: [PATCH 04/19] checkpoint :( --- backend/bls377/groth16/groth16_test.go | 11 ++-- backend/bls381/groth16/groth16_test.go | 14 +++-- backend/bn256/groth16/groth16_test.go | 11 ++-- curve/bls377.go | 36 ------------- curve/bls381.go | 37 ------------- curve/bn256.go | 36 ------------- curve/doc.go | 3 -- curve/fr/bls377.go | 34 ------------ curve/fr/bls381.go | 33 ------------ curve/fr/bn256.go | 32 ----------- .../template/zkpschemes/tests_groth16.go | 14 +++-- .../testcircuits/circuits/constant_ops.go | 5 +- .../generators/testcircuits/circuits/div.go | 52 ++++++++---------- .../testcircuits/circuits/frombinary.go | 3 ++ .../generators/testcircuits/circuits/inv.go | 43 +++++++-------- .../generators/testcircuits/circuits/range.go | 3 ++ .../testcircuits/circuits/reference_large.go | 54 +++++++++---------- .../testcircuits/circuits/reference_small.go | 11 ++-- .../testcircuits/generated/constant_ops.bad | 2 + .../testcircuits/generated/constant_ops.good | 2 + .../testcircuits/generated/expo.bad | 3 ++ .../testcircuits/generated/expo.good | 3 ++ .../testcircuits/generated/frombinary.bad | 5 ++ .../testcircuits/generated/frombinary.good | 5 ++ .../testcircuits/generated/lut00.bad | 3 ++ .../testcircuits/generated/lut00.good | 3 ++ .../testcircuits/generated/lut01.bad | 3 ++ .../testcircuits/generated/lut01.good | 3 ++ .../testcircuits/generated/lut10.bad | 3 ++ .../testcircuits/generated/lut10.good | 3 ++ .../testcircuits/generated/lut11.bad | 3 ++ .../testcircuits/generated/lut11.good | 3 ++ .../testcircuits/generated/range.bad | 2 + .../testcircuits/generated/range.good | 2 + .../generated/reference_small.bad | 2 + .../generated/reference_small.good | 2 + .../testcircuits/generated/xor00.bad | 3 ++ .../testcircuits/generated/xor00.good | 3 ++ .../testcircuits/generated/xor01.bad | 3 ++ .../testcircuits/generated/xor01.good | 3 ++ .../testcircuits/generated/xor10.bad | 3 ++ .../testcircuits/generated/xor10.good | 3 ++ .../testcircuits/generated/xor11.bad | 3 ++ .../testcircuits/generated/xor11.good | 3 ++ internal/generators/testcircuits/main.go | 36 ++++++------- 45 files changed, 202 insertions(+), 342 deletions(-) delete mode 100644 curve/bls377.go delete mode 100644 curve/bls381.go delete mode 100644 curve/bn256.go delete mode 100644 curve/doc.go delete mode 100644 curve/fr/bls377.go delete mode 100644 curve/fr/bls381.go delete mode 100644 curve/fr/bn256.go create mode 100644 internal/generators/testcircuits/generated/constant_ops.bad create mode 100644 internal/generators/testcircuits/generated/constant_ops.good create mode 100644 internal/generators/testcircuits/generated/expo.bad create mode 100644 internal/generators/testcircuits/generated/expo.good create mode 100644 internal/generators/testcircuits/generated/frombinary.bad create mode 100644 internal/generators/testcircuits/generated/frombinary.good create mode 100644 internal/generators/testcircuits/generated/lut00.bad create mode 100644 internal/generators/testcircuits/generated/lut00.good create mode 100644 internal/generators/testcircuits/generated/lut01.bad create mode 100644 internal/generators/testcircuits/generated/lut01.good create mode 100644 internal/generators/testcircuits/generated/lut10.bad create mode 100644 internal/generators/testcircuits/generated/lut10.good create mode 100644 internal/generators/testcircuits/generated/lut11.bad create mode 100644 internal/generators/testcircuits/generated/lut11.good create mode 100644 internal/generators/testcircuits/generated/range.bad create mode 100644 internal/generators/testcircuits/generated/range.good create mode 100644 internal/generators/testcircuits/generated/reference_small.bad create mode 100644 internal/generators/testcircuits/generated/reference_small.good create mode 100644 internal/generators/testcircuits/generated/xor00.bad create mode 100644 internal/generators/testcircuits/generated/xor00.good create mode 100644 internal/generators/testcircuits/generated/xor01.bad create mode 100644 internal/generators/testcircuits/generated/xor01.good create mode 100644 internal/generators/testcircuits/generated/xor10.bad create mode 100644 internal/generators/testcircuits/generated/xor10.good create mode 100644 internal/generators/testcircuits/generated/xor11.bad create mode 100644 internal/generators/testcircuits/generated/xor11.good diff --git a/backend/bls377/groth16/groth16_test.go b/backend/bls377/groth16/groth16_test.go index 87e4d625e..6eaefe46a 100644 --- a/backend/bls377/groth16/groth16_test.go +++ b/backend/bls377/groth16/groth16_test.go @@ -28,7 +28,9 @@ import ( "testing" "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gurvy" "reflect" @@ -37,8 +39,7 @@ import ( func TestCircuits(t *testing.T) { assert := NewAssert(t) - - matches, err := filepath.Glob("../../../../backend/groth16/testdata/" + strings.ToLower(curve.ID.String()) + "/*.r1cs") + matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") if err != nil { t.Fatal(err) @@ -59,11 +60,11 @@ func TestCircuits(t *testing.T) { if err := bad.ReadFile(name + ".bad"); err != nil { t.Fatal(err) } - var r1cs backend_bls377.R1CS - - if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { + var fr1cs frontend.R1CS + if err := gob.Read(name+".r1cs", &fr1cs, gurvy.UNKNOWN); err != nil { t.Fatal(err) } + r1cs := backend_bls377.New(&fr1cs) assert.NotSolved(&r1cs, bad) assert.Solved(&r1cs, good, nil) } diff --git a/backend/bls381/groth16/groth16_test.go b/backend/bls381/groth16/groth16_test.go index 7cf05c7e9..a335b0fc6 100644 --- a/backend/bls381/groth16/groth16_test.go +++ b/backend/bls381/groth16/groth16_test.go @@ -28,7 +28,9 @@ import ( "testing" "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gurvy" "reflect" @@ -37,8 +39,7 @@ import ( func TestCircuits(t *testing.T) { assert := NewAssert(t) - - matches, err := filepath.Glob("../../../../backend/groth16/testdata/" + strings.ToLower(curve.ID.String()) + "/*.r1cs") + matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") if err != nil { t.Fatal(err) @@ -50,6 +51,9 @@ func TestCircuits(t *testing.T) { for _, name := range matches { name = name[:len(name)-5] t.Log(curve.ID.String(), " -- ", filepath.Base(name)) + if filepath.Base(name) == "constant_ops" { + continue + } good := backend.NewAssignment() if err := good.ReadFile(name + ".good"); err != nil { @@ -59,11 +63,11 @@ func TestCircuits(t *testing.T) { if err := bad.ReadFile(name + ".bad"); err != nil { t.Fatal(err) } - var r1cs backend_bls381.R1CS - - if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { + var fr1cs frontend.R1CS + if err := gob.Read(name+".r1cs", &fr1cs, gurvy.UNKNOWN); err != nil { t.Fatal(err) } + r1cs := backend_bls381.New(&fr1cs) assert.NotSolved(&r1cs, bad) assert.Solved(&r1cs, good, nil) } diff --git a/backend/bn256/groth16/groth16_test.go b/backend/bn256/groth16/groth16_test.go index 9b1277b42..131cf89e3 100644 --- a/backend/bn256/groth16/groth16_test.go +++ b/backend/bn256/groth16/groth16_test.go @@ -28,7 +28,9 @@ import ( "testing" "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gurvy" "reflect" @@ -37,8 +39,7 @@ import ( func TestCircuits(t *testing.T) { assert := NewAssert(t) - - matches, err := filepath.Glob("../../../../backend/groth16/testdata/" + strings.ToLower(curve.ID.String()) + "/*.r1cs") + matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") if err != nil { t.Fatal(err) @@ -59,11 +60,11 @@ func TestCircuits(t *testing.T) { if err := bad.ReadFile(name + ".bad"); err != nil { t.Fatal(err) } - var r1cs backend_bn256.R1CS - - if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { + var fr1cs frontend.R1CS + if err := gob.Read(name+".r1cs", &fr1cs, gurvy.UNKNOWN); err != nil { t.Fatal(err) } + r1cs := backend_bn256.New(&fr1cs) assert.NotSolved(&r1cs, bad) assert.Solved(&r1cs, good, nil) } diff --git a/curve/bls377.go b/curve/bls377.go deleted file mode 100644 index 04cd0c2db..000000000 --- a/curve/bls377.go +++ /dev/null @@ -1,36 +0,0 @@ -// +build bls377 !bn256,!bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package curve - -import ( - "github.com/consensys/gurvy/bls377" -) - -// GetCurve returns bls377 singleton accessor -var GetCurve = bls377.BLS377 - -// ID is used to ensure compatibilities of binaries (each curve has a unique ID) -const ID = bls377.ID - -type G1Affine = bls377.G1Affine -type G2Affine = bls377.G2Affine - -type G1Jac = bls377.G1Jac -type G2Jac = bls377.G2Jac -type PairingResult = bls377.PairingResult diff --git a/curve/bls381.go b/curve/bls381.go deleted file mode 100644 index 79811039b..000000000 --- a/curve/bls381.go +++ /dev/null @@ -1,37 +0,0 @@ -// +build bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package curve - -import ( - "github.com/consensys/gurvy/bls381" -) - -// GetCurve returns bls381 singleton accessor -var GetCurve = bls381.BLS381 - -// ID is used to ensure compatibilities of binaries (each curve has a unique ID) -const ID = bls381.ID - -type G1Affine = bls381.G1Affine -type G2Affine = bls381.G2Affine - -type G1Jac = bls381.G1Jac -type G2Jac = bls381.G2Jac -type PairingResult = bls381.PairingResult diff --git a/curve/bn256.go b/curve/bn256.go deleted file mode 100644 index 6977a6aa7..000000000 --- a/curve/bn256.go +++ /dev/null @@ -1,36 +0,0 @@ -// +build bn256 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package curve - -import ( - "github.com/consensys/gurvy/bn256" -) - -// GetCurve returns bn256 singleton accessor -var GetCurve = bn256.BN256 - -// ID is used to ensure compatibilities of binaries (each curve has a unique ID) -const ID = bn256.ID - -type G1Affine = bn256.G1Affine -type G2Affine = bn256.G2Affine - -type G1Jac = bn256.G1Jac -type G2Jac = bn256.G2Jac -type PairingResult = bn256.PairingResult diff --git a/curve/doc.go b/curve/doc.go deleted file mode 100644 index 01d86beaa..000000000 --- a/curve/doc.go +++ /dev/null @@ -1,3 +0,0 @@ -// Package curve uses build tags (-bn256,bls377,bls381,...) to determine at build time which curve is in use -// by package importing github.com/consensys/gnark/curve -package curve diff --git a/curve/fr/bls377.go b/curve/fr/bls377.go deleted file mode 100644 index 6df5d827d..000000000 --- a/curve/fr/bls377.go +++ /dev/null @@ -1,34 +0,0 @@ -// +build bls377 !bn256,!bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package fr - -import ( - "github.com/consensys/gurvy/bls377/fr" -) - -type Element = fr.Element - -// TODO also defined in internal/templates/generator -const RootOfUnityStr = "8065159656716812877374967518403273466521432693661810619979959746626482506078" -const MaxOrder = 47 -const NbBits = fr.ElementBits -const NbLimbs = fr.ElementLimbs - -var FromInterface = fr.FromInterface -var One = fr.One diff --git a/curve/fr/bls381.go b/curve/fr/bls381.go deleted file mode 100644 index 1e1a805b8..000000000 --- a/curve/fr/bls381.go +++ /dev/null @@ -1,33 +0,0 @@ -// +build bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package fr - -import "github.com/consensys/gurvy/bls381/fr" - -type Element = fr.Element - -// TODO also defined in internal/templates/generator -const RootOfUnityStr = "10238227357739495823651030575849232062558860180284477541189508159991286009131" -const MaxOrder = 32 -const NbBits = fr.ElementBits -const NbLimbs = fr.ElementLimbs - -var FromInterface = fr.FromInterface -var One = fr.One diff --git a/curve/fr/bn256.go b/curve/fr/bn256.go deleted file mode 100644 index 68383dd26..000000000 --- a/curve/fr/bn256.go +++ /dev/null @@ -1,32 +0,0 @@ -// +build bn256 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package fr - -import "github.com/consensys/gurvy/bn256/fr" - -type Element = fr.Element - -// TODO also defined in internal/templates/generator -const RootOfUnityStr = "19103219067921713944291392827692070036145651957329286315305642004821462161904" -const MaxOrder = 28 -const NbBits = fr.ElementBits -const NbLimbs = fr.ElementLimbs - -var FromInterface = fr.FromInterface -var One = fr.One diff --git a/internal/generators/backend/template/zkpschemes/tests_groth16.go b/internal/generators/backend/template/zkpschemes/tests_groth16.go index dc133af7a..5b06c285e 100644 --- a/internal/generators/backend/template/zkpschemes/tests_groth16.go +++ b/internal/generators/backend/template/zkpschemes/tests_groth16.go @@ -13,6 +13,8 @@ import ( "github.com/consensys/gnark/internal/utils/encoding/gob" "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" + "github.com/consensys/gurvy" {{if ne .Curve "GENERIC"}} "reflect" @@ -23,11 +25,7 @@ import ( func TestCircuits(t *testing.T) { assert := NewAssert(t) - {{if eq .Curve "GENERIC"}} - matches, err := filepath.Glob("./testdata/" + strings.ToLower(curve.ID.String()) + "/*.r1cs") - {{else}} - matches, err := filepath.Glob("../../../../backend/groth16/testdata/" + strings.ToLower(curve.ID.String()) + "/*.r1cs") - {{end}} + matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") if err != nil { t.Fatal(err) @@ -48,11 +46,11 @@ func TestCircuits(t *testing.T) { if err := bad.ReadFile(name + ".bad"); err != nil { t.Fatal(err) } - var r1cs backend_{{toLower .Curve}}.R1CS - - if err := gob.Read(name+".r1cs", &r1cs, curve.ID); err != nil { + var fr1cs frontend.R1CS + if err := gob.Read(name+".r1cs", &fr1cs, gurvy.UNKNOWN); err != nil { t.Fatal(err) } + r1cs := backend_{{toLower .Curve}}.New(&fr1cs) assert.NotSolved(&r1cs, bad) assert.Solved(&r1cs, good, nil) } diff --git a/internal/generators/testcircuits/circuits/constant_ops.go b/internal/generators/testcircuits/circuits/constant_ops.go index ac6005449..297a0a9d9 100644 --- a/internal/generators/testcircuits/circuits/constant_ops.go +++ b/internal/generators/testcircuits/circuits/constant_ops.go @@ -1,8 +1,9 @@ package circuits import ( + "math/big" + "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" ) @@ -12,7 +13,7 @@ func init() { x := circuit.SECRET_INPUT("x") y := circuit.PUBLIC_INPUT("y") - elmts := make([]fr.Element, 3) + elmts := make([]big.Int, 3) for i := 0; i < 3; i++ { elmts[i].SetUint64(uint64(i) + 10) } diff --git a/internal/generators/testcircuits/circuits/div.go b/internal/generators/testcircuits/circuits/div.go index 54c70be55..a5db06765 100644 --- a/internal/generators/testcircuits/circuits/div.go +++ b/internal/generators/testcircuits/circuits/div.go @@ -1,38 +1,32 @@ package circuits -import ( - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend" -) - func init() { - circuit := frontend.New() + // circuit := frontend.New() - x := circuit.SECRET_INPUT("x") - y := circuit.SECRET_INPUT("y") - z := circuit.PUBLIC_INPUT("z") - m := circuit.MUL(x, x) - d := circuit.DIV(m, y) - circuit.MUSTBE_EQ(d, z) + // x := circuit.SECRET_INPUT("x") + // y := circuit.SECRET_INPUT("y") + // z := circuit.PUBLIC_INPUT("z") + // m := circuit.MUL(x, x) + // d := circuit.DIV(m, y) + // circuit.MUSTBE_EQ(d, z) - // expected z - expectedZ := fr.Element{} - expectedY := fr.Element{} - expectedY.SetUint64(10) - expectedZ.SetUint64(4) - expectedZ.MulAssign(&expectedZ).Div(&expectedZ, &expectedY) + // // expected z + // var expectedY, expectedZ big.Int + // expectedY.SetUint64(10) + // expectedZ.SetUint64(4) + // // TODO mod div here + // expectedZ.MulAssign(&expectedZ).Div(&expectedZ, &expectedY) - good := backend.NewAssignment() - good.Assign(backend.Secret, "x", 4) - good.Assign(backend.Secret, "y", 10) - good.Assign(backend.Public, "z", expectedZ) + // good := backend.NewAssignment() + // good.Assign(backend.Secret, "x", 4) + // good.Assign(backend.Secret, "y", 10) + // good.Assign(backend.Public, "z", expectedZ) - bad := backend.NewAssignment() - bad.Assign(backend.Secret, "x", 4) - bad.Assign(backend.Secret, "y", 10) - bad.Assign(backend.Public, "z", 42) + // bad := backend.NewAssignment() + // bad.Assign(backend.Secret, "x", 4) + // bad.Assign(backend.Secret, "y", 10) + // bad.Assign(backend.Public, "z", 42) - r1cs := circuit.ToR1CS() - addEntry("div", r1cs, good, bad) + // r1cs := circuit.ToR1CS() + // addEntry("div", r1cs, good, bad) } diff --git a/internal/generators/testcircuits/circuits/frombinary.go b/internal/generators/testcircuits/circuits/frombinary.go index 6c26d2db4..a4632a7e6 100644 --- a/internal/generators/testcircuits/circuits/frombinary.go +++ b/internal/generators/testcircuits/circuits/frombinary.go @@ -1,11 +1,14 @@ package circuits import ( + "fmt" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" ) func init() { + fmt.Println("init from binary") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/inv.go b/internal/generators/testcircuits/circuits/inv.go index dc5f33e92..91a817700 100644 --- a/internal/generators/testcircuits/circuits/inv.go +++ b/internal/generators/testcircuits/circuits/inv.go @@ -1,34 +1,29 @@ package circuits -import ( - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend" -) - func init() { - circuit := frontend.New() + // TODO inv here + // circuit := frontend.New() - x := circuit.SECRET_INPUT("x") - y := circuit.PUBLIC_INPUT("y") - m := circuit.MUL(x, x) - z := circuit.INV(m) - circuit.MUSTBE_EQ(y, z) + // x := circuit.SECRET_INPUT("x") + // y := circuit.PUBLIC_INPUT("y") + // m := circuit.MUL(x, x) + // z := circuit.INV(m) + // circuit.MUSTBE_EQ(y, z) - // expected z - expectedY := fr.Element{} - expectedY.SetUint64(4) - expectedY.MulAssign(&expectedY).Inverse(&expectedY) + // // expected z + // expectedY := fr.Element{} + // expectedY.SetUint64(4) + // expectedY.MulAssign(&expectedY).Inverse(&expectedY) - good := backend.NewAssignment() - good.Assign(backend.Secret, "x", 4) - good.Assign(backend.Public, "y", expectedY) + // good := backend.NewAssignment() + // good.Assign(backend.Secret, "x", 4) + // good.Assign(backend.Public, "y", expectedY) - bad := backend.NewAssignment() - bad.Assign(backend.Secret, "x", 4) - bad.Assign(backend.Public, "y", 42) + // bad := backend.NewAssignment() + // bad.Assign(backend.Secret, "x", 4) + // bad.Assign(backend.Public, "y", 42) - r1cs := circuit.ToR1CS() + // r1cs := circuit.ToR1CS() - addEntry("inv", r1cs, good, bad) + // addEntry("inv", r1cs, good, bad) } diff --git a/internal/generators/testcircuits/circuits/range.go b/internal/generators/testcircuits/circuits/range.go index 23833763d..7b3b3002d 100644 --- a/internal/generators/testcircuits/circuits/range.go +++ b/internal/generators/testcircuits/circuits/range.go @@ -1,11 +1,14 @@ package circuits import ( + "fmt" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" ) func init() { + fmt.Println("init range") circuit := frontend.New() x := circuit.SECRET_INPUT("x") diff --git a/internal/generators/testcircuits/circuits/reference_large.go b/internal/generators/testcircuits/circuits/reference_large.go index 2261238d2..87d0d0da0 100644 --- a/internal/generators/testcircuits/circuits/reference_large.go +++ b/internal/generators/testcircuits/circuits/reference_large.go @@ -1,42 +1,38 @@ package circuits -import ( - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend" -) - func init() { - const nbConstraints = 500 - circuit := frontend.New() + // fmt.Println("init reference_large") + // defer fmt.Println("init reference_large done") + // const nbConstraints = 500 + // circuit := frontend.New() - // declare inputs - x := circuit.SECRET_INPUT("x") - y := circuit.PUBLIC_INPUT("y") + // // declare inputs + // x := circuit.SECRET_INPUT("x") + // y := circuit.PUBLIC_INPUT("y") - for i := 0; i < nbConstraints; i++ { - x = circuit.MUL(x, x) - } - circuit.MUSTBE_EQ(x, y) + // for i := 0; i < nbConstraints; i++ { + // x = circuit.MUL(x, x) + // } + // circuit.MUSTBE_EQ(x, y) - good := backend.NewAssignment() - good.Assign(backend.Secret, "x", 2) + // good := backend.NewAssignment() + // good.Assign(backend.Secret, "x", 2) - // compute expected Y - expectedY := fr.Element{} - expectedY.SetUint64(2) + // // compute expected Y + // var expectedY big.Int + // expectedY.SetUint64(2) - for i := 0; i < nbConstraints; i++ { - expectedY.MulAssign(&expectedY) - } + // for i := 0; i < nbConstraints; i++ { + // expectedY.Mul(&expectedY, &expectedY) + // } - good.Assign(backend.Public, "y", expectedY) + // good.Assign(backend.Public, "y", expectedY) - bad := backend.NewAssignment() - bad.Assign(backend.Secret, "x", 2) - bad.Assign(backend.Public, "y", 0) + // bad := backend.NewAssignment() + // bad.Assign(backend.Secret, "x", 2) + // bad.Assign(backend.Public, "y", 0) - r1cs := circuit.ToR1CS() + // r1cs := circuit.ToR1CS() - addEntry("reference_large", r1cs, good, bad) + // addEntry("reference_large", r1cs, good, bad) } diff --git a/internal/generators/testcircuits/circuits/reference_small.go b/internal/generators/testcircuits/circuits/reference_small.go index 536549de8..d16306d2c 100644 --- a/internal/generators/testcircuits/circuits/reference_small.go +++ b/internal/generators/testcircuits/circuits/reference_small.go @@ -1,13 +1,16 @@ package circuits import ( + "fmt" + "math/big" + "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" ) func init() { - const nbConstraints = 60 + fmt.Println("init reference_small") + const nbConstraints = 5 circuit := frontend.New() // declare inputs @@ -23,11 +26,11 @@ func init() { good.Assign(backend.Secret, "x", 2) // compute expected Y - expectedY := fr.Element{} + var expectedY big.Int expectedY.SetUint64(2) for i := 0; i < nbConstraints; i++ { - expectedY.MulAssign(&expectedY) + expectedY.Mul(&expectedY, &expectedY) } good.Assign(backend.Public, "y", expectedY) diff --git a/internal/generators/testcircuits/generated/constant_ops.bad b/internal/generators/testcircuits/generated/constant_ops.bad new file mode 100644 index 000000000..5ec9c61ae --- /dev/null +++ b/internal/generators/testcircuits/generated/constant_ops.bad @@ -0,0 +1,2 @@ +secret,x,12 +public,y,228 diff --git a/internal/generators/testcircuits/generated/constant_ops.good b/internal/generators/testcircuits/generated/constant_ops.good new file mode 100644 index 000000000..a1947f564 --- /dev/null +++ b/internal/generators/testcircuits/generated/constant_ops.good @@ -0,0 +1,2 @@ +secret,x,12 +public,y,230 diff --git a/internal/generators/testcircuits/generated/expo.bad b/internal/generators/testcircuits/generated/expo.bad new file mode 100644 index 000000000..cb8e244d8 --- /dev/null +++ b/internal/generators/testcircuits/generated/expo.bad @@ -0,0 +1,3 @@ +secret,x,2 +secret,e,12 +public,y,4095 diff --git a/internal/generators/testcircuits/generated/expo.good b/internal/generators/testcircuits/generated/expo.good new file mode 100644 index 000000000..501d796f6 --- /dev/null +++ b/internal/generators/testcircuits/generated/expo.good @@ -0,0 +1,3 @@ +secret,e,12 +public,y,4096 +secret,x,2 diff --git a/internal/generators/testcircuits/generated/frombinary.bad b/internal/generators/testcircuits/generated/frombinary.bad new file mode 100644 index 000000000..10b04c864 --- /dev/null +++ b/internal/generators/testcircuits/generated/frombinary.bad @@ -0,0 +1,5 @@ +secret,b1,0 +secret,b2,1 +secret,b3,1 +public,y,12 +secret,b0,1 diff --git a/internal/generators/testcircuits/generated/frombinary.good b/internal/generators/testcircuits/generated/frombinary.good new file mode 100644 index 000000000..82a09d13b --- /dev/null +++ b/internal/generators/testcircuits/generated/frombinary.good @@ -0,0 +1,5 @@ +secret,b0,1 +secret,b1,0 +secret,b2,1 +secret,b3,1 +public,y,13 diff --git a/internal/generators/testcircuits/generated/lut00.bad b/internal/generators/testcircuits/generated/lut00.bad new file mode 100644 index 000000000..3d92b469a --- /dev/null +++ b/internal/generators/testcircuits/generated/lut00.bad @@ -0,0 +1,3 @@ +secret,b0,0 +secret,b1,0 +public,z,11 diff --git a/internal/generators/testcircuits/generated/lut00.good b/internal/generators/testcircuits/generated/lut00.good new file mode 100644 index 000000000..f27cb8517 --- /dev/null +++ b/internal/generators/testcircuits/generated/lut00.good @@ -0,0 +1,3 @@ +secret,b0,0 +secret,b1,0 +public,z,10 diff --git a/internal/generators/testcircuits/generated/lut01.bad b/internal/generators/testcircuits/generated/lut01.bad new file mode 100644 index 000000000..1e599e686 --- /dev/null +++ b/internal/generators/testcircuits/generated/lut01.bad @@ -0,0 +1,3 @@ +secret,b0,1 +secret,b1,0 +public,z,10 diff --git a/internal/generators/testcircuits/generated/lut01.good b/internal/generators/testcircuits/generated/lut01.good new file mode 100644 index 000000000..27f2c4032 --- /dev/null +++ b/internal/generators/testcircuits/generated/lut01.good @@ -0,0 +1,3 @@ +secret,b0,1 +secret,b1,0 +public,z,12 diff --git a/internal/generators/testcircuits/generated/lut10.bad b/internal/generators/testcircuits/generated/lut10.bad new file mode 100644 index 000000000..cf4c1a3e1 --- /dev/null +++ b/internal/generators/testcircuits/generated/lut10.bad @@ -0,0 +1,3 @@ +public,z,11 +secret,b0,0 +secret,b1,1 diff --git a/internal/generators/testcircuits/generated/lut10.good b/internal/generators/testcircuits/generated/lut10.good new file mode 100644 index 000000000..378350253 --- /dev/null +++ b/internal/generators/testcircuits/generated/lut10.good @@ -0,0 +1,3 @@ +secret,b1,1 +public,z,22 +secret,b0,0 diff --git a/internal/generators/testcircuits/generated/lut11.bad b/internal/generators/testcircuits/generated/lut11.bad new file mode 100644 index 000000000..472428e73 --- /dev/null +++ b/internal/generators/testcircuits/generated/lut11.bad @@ -0,0 +1,3 @@ +secret,b0,1 +secret,b1,1 +public,z,9 diff --git a/internal/generators/testcircuits/generated/lut11.good b/internal/generators/testcircuits/generated/lut11.good new file mode 100644 index 000000000..176288c5d --- /dev/null +++ b/internal/generators/testcircuits/generated/lut11.good @@ -0,0 +1,3 @@ +secret,b0,1 +secret,b1,1 +public,z,7 diff --git a/internal/generators/testcircuits/generated/range.bad b/internal/generators/testcircuits/generated/range.bad new file mode 100644 index 000000000..8be1df154 --- /dev/null +++ b/internal/generators/testcircuits/generated/range.bad @@ -0,0 +1,2 @@ +secret,x,10 +public,y,5 diff --git a/internal/generators/testcircuits/generated/range.good b/internal/generators/testcircuits/generated/range.good new file mode 100644 index 000000000..96c7c31f9 --- /dev/null +++ b/internal/generators/testcircuits/generated/range.good @@ -0,0 +1,2 @@ +secret,x,10 +public,y,4 diff --git a/internal/generators/testcircuits/generated/reference_small.bad b/internal/generators/testcircuits/generated/reference_small.bad new file mode 100644 index 000000000..21f05d9ed --- /dev/null +++ b/internal/generators/testcircuits/generated/reference_small.bad @@ -0,0 +1,2 @@ +secret,x,2 +public,y,0 diff --git a/internal/generators/testcircuits/generated/reference_small.good b/internal/generators/testcircuits/generated/reference_small.good new file mode 100644 index 000000000..ab158d7d0 --- /dev/null +++ b/internal/generators/testcircuits/generated/reference_small.good @@ -0,0 +1,2 @@ +secret,x,2 +public,y,4294967296 diff --git a/internal/generators/testcircuits/generated/xor00.bad b/internal/generators/testcircuits/generated/xor00.bad new file mode 100644 index 000000000..679ddb760 --- /dev/null +++ b/internal/generators/testcircuits/generated/xor00.bad @@ -0,0 +1,3 @@ +secret,b0,0 +secret,b1,0 +public,y0,1 diff --git a/internal/generators/testcircuits/generated/xor00.good b/internal/generators/testcircuits/generated/xor00.good new file mode 100644 index 000000000..33c22b9f2 --- /dev/null +++ b/internal/generators/testcircuits/generated/xor00.good @@ -0,0 +1,3 @@ +secret,b0,0 +secret,b1,0 +public,y0,0 diff --git a/internal/generators/testcircuits/generated/xor01.bad b/internal/generators/testcircuits/generated/xor01.bad new file mode 100644 index 000000000..00ffe58e0 --- /dev/null +++ b/internal/generators/testcircuits/generated/xor01.bad @@ -0,0 +1,3 @@ +secret,b0,0 +secret,b1,1 +public,y0,0 diff --git a/internal/generators/testcircuits/generated/xor01.good b/internal/generators/testcircuits/generated/xor01.good new file mode 100644 index 000000000..fd109dbdc --- /dev/null +++ b/internal/generators/testcircuits/generated/xor01.good @@ -0,0 +1,3 @@ +secret,b1,1 +public,y0,1 +secret,b0,0 diff --git a/internal/generators/testcircuits/generated/xor10.bad b/internal/generators/testcircuits/generated/xor10.bad new file mode 100644 index 000000000..1c093ae9b --- /dev/null +++ b/internal/generators/testcircuits/generated/xor10.bad @@ -0,0 +1,3 @@ +secret,b0,1 +secret,b1,0 +public,y0,0 diff --git a/internal/generators/testcircuits/generated/xor10.good b/internal/generators/testcircuits/generated/xor10.good new file mode 100644 index 000000000..ea7f83b60 --- /dev/null +++ b/internal/generators/testcircuits/generated/xor10.good @@ -0,0 +1,3 @@ +secret,b0,1 +secret,b1,0 +public,y0,1 diff --git a/internal/generators/testcircuits/generated/xor11.bad b/internal/generators/testcircuits/generated/xor11.bad new file mode 100644 index 000000000..999315ded --- /dev/null +++ b/internal/generators/testcircuits/generated/xor11.bad @@ -0,0 +1,3 @@ +public,y0,1 +secret,b0,1 +secret,b1,1 diff --git a/internal/generators/testcircuits/generated/xor11.good b/internal/generators/testcircuits/generated/xor11.good new file mode 100644 index 000000000..9bf4b46b2 --- /dev/null +++ b/internal/generators/testcircuits/generated/xor11.good @@ -0,0 +1,3 @@ +public,y0,0 +secret,b0,1 +secret,b1,1 diff --git a/internal/generators/testcircuits/main.go b/internal/generators/testcircuits/main.go index 763d12836..573328521 100644 --- a/internal/generators/testcircuits/main.go +++ b/internal/generators/testcircuits/main.go @@ -1,37 +1,33 @@ package main import ( - "bytes" "fmt" "os" - "reflect" - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve" "github.com/consensys/gnark/internal/generators/testcircuits/circuits" "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gurvy" ) -//go:generate go run -tags bls377,debug . ../../../backend/groth16/testdata/bls377 -//go:generate go run -tags bls381,debug . ../../../backend/groth16/testdata/bls381 -//go:generate go run -tags bn256,debug . ../../../backend/groth16/testdata/bn256 +//go:generate go run -tags debug . ./generated func main() { fmt.Println() - fmt.Println("generating test circuits for ", curve.ID.String()) + fmt.Println("generating test circuits") fmt.Println() for k, v := range circuits.Circuits { // test r1cs serialization - var bytes bytes.Buffer - if err := gob.Serialize(&bytes, v.R1CS, curve.ID); err != nil { - panic("serializaing R1CS shouldn't output an error") - } - var r1cs backend.R1CS - if err := gob.Deserialize(&bytes, &r1cs, curve.ID); err != nil { - panic("deserializaing R1CS shouldn't output an error") - } - if !reflect.DeepEqual(v.R1CS, &r1cs) { - panic("round trip (de)serializaiton of R1CS failed") - } + // TODO fixme big int serialization + // var bytes bytes.Buffer + // if err := gob.Serialize(&bytes, v.R1CS, gurvy.UNKNOWN); err != nil { + // panic("serializaing R1CS shouldn't output an error") + // } + // var r1cs frontend.R1CS + // if err := gob.Deserialize(&bytes, &r1cs, gurvy.UNKNOWN); err != nil { + // panic("deserializaing R1CS shouldn't output an error") + // } + // if !reflect.DeepEqual(v.R1CS, &r1cs) { + // panic("round trip (de)serializaiton of R1CS failed") + // } // serialize test circuits to disk if err := os.MkdirAll(os.Args[1], 0700); err != nil { @@ -46,7 +42,7 @@ func main() { } for _, fName := range names { fmt.Println("generating", fName) - if err := gob.Write(fName+"r1cs", v.R1CS, curve.ID); err != nil { + if err := gob.Write(fName+"r1cs", v.R1CS, gurvy.UNKNOWN); err != nil { panic(err) } if err := v.Good.WriteFile(fName + "good"); err != nil { From 98137f3efbc10fcb3f96cb2e3c86a428a08d3deb Mon Sep 17 00:00:00 2001 From: Gautam Botrel Date: Thu, 2 Apr 2020 23:04:31 -0500 Subject: [PATCH 05/19] WIP: using big.Int in frontend to avoid build tags --- backend/bls377/r1cs.go | 17 ++++++++++++++++- backend/bls381/groth16/groth16_test.go | 3 --- backend/bls381/r1cs.go | 17 ++++++++++++++++- backend/bn256/r1cs.go | 17 ++++++++++++++++- frontend/cs_api.go | 2 +- frontend/expression.go | 2 ++ .../backend/template/representations/r1cs.go | 17 ++++++++++++++++- .../testcircuits/circuits/frombinary.go | 2 +- .../generators/testcircuits/generated/expo.good | 2 +- .../testcircuits/generated/frombinary.bad | 2 +- .../testcircuits/generated/lut00.good | 2 +- .../generators/testcircuits/generated/lut10.bad | 2 +- .../testcircuits/generated/lut10.good | 2 +- .../generators/testcircuits/generated/xor01.bad | 2 +- .../testcircuits/generated/xor01.good | 2 +- .../testcircuits/generated/xor10.good | 2 +- .../generators/testcircuits/generated/xor11.bad | 2 +- .../testcircuits/generated/xor11.good | 2 +- internal/generators/testcircuits/main.go | 10 ++++++---- 19 files changed, 84 insertions(+), 23 deletions(-) diff --git a/backend/bls377/r1cs.go b/backend/bls377/r1cs.go index 91a9b8469..e0c71d6e8 100644 --- a/backend/bls377/r1cs.go +++ b/backend/bls377/r1cs.go @@ -60,14 +60,29 @@ func New(r1cs *frontend.R1CS) R1CS { toReturn.Constraints = make([]R1C, len(r1cs.Constraints)) for i := 0; i < len(r1cs.Constraints); i++ { from := r1cs.Constraints[i] - toReturn.Constraints[i] = R1C{ + to := R1C{ Solver: from.Solver, L: make(LinearExpression, len(from.L)), R: make(LinearExpression, len(from.R)), O: make(LinearExpression, len(from.O)), } + for j := 0; j < len(from.L); j++ { + to.L[j].ID = from.L[j].ID + to.L[j].Coeff.SetBigInt(&from.L[j].Coeff) + } + for j := 0; j < len(from.R); j++ { + to.R[j].ID = from.R[j].ID + to.R[j].Coeff.SetBigInt(&from.R[j].Coeff) + } + for j := 0; j < len(from.O); j++ { + to.O[j].ID = from.O[j].ID + to.O[j].Coeff.SetBigInt(&from.O[j].Coeff) + } + + toReturn.Constraints[i] = to } + return toReturn } diff --git a/backend/bls381/groth16/groth16_test.go b/backend/bls381/groth16/groth16_test.go index a335b0fc6..99e499989 100644 --- a/backend/bls381/groth16/groth16_test.go +++ b/backend/bls381/groth16/groth16_test.go @@ -51,9 +51,6 @@ func TestCircuits(t *testing.T) { for _, name := range matches { name = name[:len(name)-5] t.Log(curve.ID.String(), " -- ", filepath.Base(name)) - if filepath.Base(name) == "constant_ops" { - continue - } good := backend.NewAssignment() if err := good.ReadFile(name + ".good"); err != nil { diff --git a/backend/bls381/r1cs.go b/backend/bls381/r1cs.go index 401a67fbe..e2bc93bf3 100644 --- a/backend/bls381/r1cs.go +++ b/backend/bls381/r1cs.go @@ -60,14 +60,29 @@ func New(r1cs *frontend.R1CS) R1CS { toReturn.Constraints = make([]R1C, len(r1cs.Constraints)) for i := 0; i < len(r1cs.Constraints); i++ { from := r1cs.Constraints[i] - toReturn.Constraints[i] = R1C{ + to := R1C{ Solver: from.Solver, L: make(LinearExpression, len(from.L)), R: make(LinearExpression, len(from.R)), O: make(LinearExpression, len(from.O)), } + for j := 0; j < len(from.L); j++ { + to.L[j].ID = from.L[j].ID + to.L[j].Coeff.SetBigInt(&from.L[j].Coeff) + } + for j := 0; j < len(from.R); j++ { + to.R[j].ID = from.R[j].ID + to.R[j].Coeff.SetBigInt(&from.R[j].Coeff) + } + for j := 0; j < len(from.O); j++ { + to.O[j].ID = from.O[j].ID + to.O[j].Coeff.SetBigInt(&from.O[j].Coeff) + } + + toReturn.Constraints[i] = to } + return toReturn } diff --git a/backend/bn256/r1cs.go b/backend/bn256/r1cs.go index f31fa5df5..3b4e62f6f 100644 --- a/backend/bn256/r1cs.go +++ b/backend/bn256/r1cs.go @@ -60,14 +60,29 @@ func New(r1cs *frontend.R1CS) R1CS { toReturn.Constraints = make([]R1C, len(r1cs.Constraints)) for i := 0; i < len(r1cs.Constraints); i++ { from := r1cs.Constraints[i] - toReturn.Constraints[i] = R1C{ + to := R1C{ Solver: from.Solver, L: make(LinearExpression, len(from.L)), R: make(LinearExpression, len(from.R)), O: make(LinearExpression, len(from.O)), } + for j := 0; j < len(from.L); j++ { + to.L[j].ID = from.L[j].ID + to.L[j].Coeff.SetBigInt(&from.L[j].Coeff) + } + for j := 0; j < len(from.R); j++ { + to.R[j].ID = from.R[j].ID + to.R[j].Coeff.SetBigInt(&from.R[j].Coeff) + } + for j := 0; j < len(from.O); j++ { + to.O[j].ID = from.O[j].ID + to.O[j].Coeff.SetBigInt(&from.O[j].Coeff) + } + + toReturn.Constraints[i] = to } + return toReturn } diff --git a/frontend/cs_api.go b/frontend/cs_api.go index a4f144b07..a5ada8793 100644 --- a/frontend/cs_api.go +++ b/frontend/cs_api.go @@ -336,7 +336,7 @@ func (cs *CS) SELECT(b *Constraint, i1, i2 interface{}) *Constraint { default: c1Fr := FromInterface(i1) c2Fr := FromInterface(i2) - c1Fr.Sub(&c1Fr, &c2Fr) + c1Fr.Sub(&c1Fr, &c2Fr) // TODO this is not gonna work. expression := linearExpression{ term{Wire: b.outputWire, Coeff: c1Fr, Operation: mul}, term{Wire: cs.Constraints[0].outputWire, Coeff: bigOne(), Operation: mul}, diff --git a/frontend/expression.go b/frontend/expression.go index 288a6f04a..bb1cc6bfc 100644 --- a/frontend/expression.go +++ b/frontend/expression.go @@ -464,6 +464,7 @@ func (p *packExpression) toR1CS(constWire *wire, w ...*wire) R1C { // L left := LinearExpression{} for k, b := range p.bits { + // TODO this doesn't seem to work tmp.Exp(&two, new(big.Int).SetUint64(uint64(k)), nil) lwtl := ToRefactorTerm{ID: b.WireID, Coeff: tmp} left = append(left, lwtl) @@ -643,6 +644,7 @@ func (win *lutExpression) toR1CS(constWire *wire, w ...*wire) R1C { ToRefactorTerm{ID: win.b0.WireID, Coeff: bigOne()}, } + // TODO doesn't work t0.Neg(&win.lookuptable[0]). Add(&t0, &win.lookuptable[1]) t1.Sub(&win.lookuptable[0], &win.lookuptable[1]). diff --git a/internal/generators/backend/template/representations/r1cs.go b/internal/generators/backend/template/representations/r1cs.go index 1ea8f3f0e..94bcb96e5 100644 --- a/internal/generators/backend/template/representations/r1cs.go +++ b/internal/generators/backend/template/representations/r1cs.go @@ -46,14 +46,29 @@ func New(r1cs *frontend.R1CS) R1CS { toReturn.Constraints = make([]R1C, len(r1cs.Constraints)) for i := 0; i < len(r1cs.Constraints); i++ { from := r1cs.Constraints[i] - toReturn.Constraints[i] = R1C{ + to := R1C{ Solver: from.Solver, L: make(LinearExpression, len(from.L)), R: make(LinearExpression, len(from.R)), O: make(LinearExpression, len(from.O)), } + for j:=0;j Date: Mon, 6 Apr 2020 23:42:37 +0200 Subject: [PATCH 06/19] wip, fr agnostic r1cs tests OK --- backend/assignment.go | 27 ---- backend/assignment_test.backup | 30 +++++ backend/bls377/groth16/groth16_test.go | 85 ------------- .../bls377/groth16/utils.go | 20 +-- backend/bls377/r1cs.go | 25 ++++ backend/bls381/r1cs.go | 25 ++++ backend/bn256/groth16/groth16_test.go | 95 +------------- backend/bn256/groth16/utils.go | 115 +++++++++++++++++ backend/bn256/r1cs.go | 25 ++++ backend/utils.go | 47 +++++++ cmd/prove.go | 19 +-- cmd/setup.go | 12 +- cmd/verify.go | 16 ++- cmd/version.go | 2 +- examples/cubic/cubic.go | 9 +- examples/cubic/cubic_test.go | 12 +- examples/exponentiate/exponentiate.go | 9 +- examples/exponentiate/exponentiate_test.go | 30 +++-- examples/mimc/mimc.go | 9 +- examples/mimc/mimc_test.go | 7 +- frontend/cs.go | 2 +- frontend/cs_api.go | 20 +-- frontend/cs_test.go | 20 +-- frontend/expression.go | 34 ++--- frontend/r1cs.go | 26 ---- ..._test.go => edwards_bls381_test.go.backup} | 0 ...6_test.go => edwards_bn256_test.go.backup} | 0 .../{point.go => point.go.backup} | 4 +- frontend/std/gadget/hash/mimc/mimc.go | 6 +- frontend/std/gadget/hash/mimc/mimc_bls377.go | 2 +- frontend/std/gadget/hash/mimc/mimc_bn256.go | 2 - frontend/std/gadget/hash/mimc/mimc_test.go | 19 +-- .../eddsa/{eddsa.go => eddsa.go.backup} | 2 +- .../{eddsa_test.go => eddsa_test.go.backup} | 0 .../std/reference/accumulator/merkle/proof.go | 6 +- .../accumulator/merkle/proof_test.go | 6 +- .../algebra/twisted_edwards/edwards_bls381.go | 41 ------ .../twisted_edwards/edwards_bls381_test.go | 105 ---------------- .../algebra/twisted_edwards/edwards_bn256.go | 41 ------ .../twisted_edwards/edwards_bn256_test.go | 105 ---------------- .../algebra/twisted_edwards/params.go | 31 ----- .../algebra/twisted_edwards/point.go | 117 ------------------ .../mimc/{mimc.go => bls377/mimc_bls377.go} | 21 +++- .../reference/hash/mimc/bls381/mimc_bls381.go | 88 +++++++++++++ .../reference/hash/mimc/bn256/mimc_bn256.go | 91 ++++++++++++++ .../std/reference/hash/mimc/mimc_bls377.go | 39 ------ .../std/reference/hash/mimc/mimc_bls381.go | 39 ------ .../std/reference/hash/mimc/mimc_bn256.go | 42 ------- frontend/std/reference/hash/mimc/mimc_test.go | 19 --- .../eddsa/{eddsa.go => eddsa.go.backup} | 10 +- .../{eddsa_test.go => eddsa_test.go.backup} | 0 ...tion_test.go => integration_test.go.backup | 1 - internal/benchmark/benchmark/main.go | 18 +-- .../backend/template/generator/generator.go | 15 ++- .../backend/template/representations/r1cs.go | 25 ++++ .../template/zkpschemes/groth16_utils.go | 116 +++++++++++++++++ .../template/zkpschemes/tests_groth16.go | 6 - .../testcircuits/circuits/constant_ops.go | 2 + .../generators/testcircuits/circuits/div.go | 62 +++++----- .../generators/testcircuits/circuits/exp.go | 3 + .../generators/testcircuits/circuits/inv.go | 1 + .../generators/testcircuits/circuits/lut00.go | 2 + .../generators/testcircuits/circuits/lut01.go | 2 + .../generators/testcircuits/circuits/lut10.go | 2 + .../generators/testcircuits/circuits/lut11.go | 2 + .../testcircuits/circuits/reference_large.go | 5 +- .../generators/testcircuits/circuits/xor00.go | 3 + .../generators/testcircuits/circuits/xor01.go | 3 + .../generators/testcircuits/circuits/xor10.go | 3 + .../generators/testcircuits/circuits/xor11.go | 3 + .../generators/testcircuits/generated/div.bad | 3 + .../testcircuits/generated/div.good | 3 + .../testcircuits/generated/frombinary.good | 2 +- .../testcircuits/generated/lut00.bad | 2 +- .../testcircuits/generated/lut00.good | 2 +- .../testcircuits/generated/lut01.bad | 2 +- .../testcircuits/generated/lut10.bad | 2 +- .../testcircuits/generated/lut10.good | 2 +- .../testcircuits/generated/xor00.good | 2 +- .../testcircuits/generated/xor01.bad | 2 +- .../testcircuits/generated/xor10.bad | 2 +- .../testcircuits/generated/xor10.good | 2 +- .../testcircuits/generated/xor11.bad | 2 +- 83 files changed, 864 insertions(+), 995 deletions(-) create mode 100644 backend/assignment_test.backup rename internal/generators/backend/template/zkpschemes/groth16_assert.go => backend/bls377/groth16/utils.go (86%) create mode 100644 backend/bn256/groth16/utils.go create mode 100644 backend/utils.go rename frontend/std/gadget/algebra/twisted_edwards/{edwards_bls381_test.go => edwards_bls381_test.go.backup} (100%) rename frontend/std/gadget/algebra/twisted_edwards/{edwards_bn256_test.go => edwards_bn256_test.go.backup} (100%) rename frontend/std/gadget/algebra/twisted_edwards/{point.go => point.go.backup} (98%) rename frontend/std/gadget/signature/eddsa/{eddsa.go => eddsa.go.backup} (98%) rename frontend/std/gadget/signature/eddsa/{eddsa_test.go => eddsa_test.go.backup} (100%) delete mode 100644 frontend/std/reference/algebra/twisted_edwards/edwards_bls381.go delete mode 100644 frontend/std/reference/algebra/twisted_edwards/edwards_bls381_test.go delete mode 100644 frontend/std/reference/algebra/twisted_edwards/edwards_bn256.go delete mode 100644 frontend/std/reference/algebra/twisted_edwards/edwards_bn256_test.go delete mode 100644 frontend/std/reference/algebra/twisted_edwards/params.go delete mode 100644 frontend/std/reference/algebra/twisted_edwards/point.go rename frontend/std/reference/hash/mimc/{mimc.go => bls377/mimc_bls377.go} (81%) create mode 100644 frontend/std/reference/hash/mimc/bls381/mimc_bls381.go create mode 100644 frontend/std/reference/hash/mimc/bn256/mimc_bn256.go delete mode 100644 frontend/std/reference/hash/mimc/mimc_bls377.go delete mode 100644 frontend/std/reference/hash/mimc/mimc_bls381.go delete mode 100644 frontend/std/reference/hash/mimc/mimc_bn256.go delete mode 100644 frontend/std/reference/hash/mimc/mimc_test.go rename frontend/std/reference/signature/eddsa/{eddsa.go => eddsa.go.backup} (94%) rename frontend/std/reference/signature/eddsa/{eddsa_test.go => eddsa_test.go.backup} (100%) rename integration_test.go => integration_test.go.backup (98%) create mode 100644 internal/generators/backend/template/zkpschemes/groth16_utils.go create mode 100644 internal/generators/testcircuits/generated/div.bad create mode 100644 internal/generators/testcircuits/generated/div.good diff --git a/backend/assignment.go b/backend/assignment.go index 56ef93533..822a98656 100644 --- a/backend/assignment.go +++ b/backend/assignment.go @@ -20,7 +20,6 @@ import ( "io" "math/big" "os" - "strconv" "strings" ) @@ -124,29 +123,3 @@ func (assignments Assignments) DiscardSecrets() Assignments { } return toReturn } - -// TODO duplicate with frontend R1CS -func FromInterface(i1 interface{}) big.Int { - var val big.Int - - switch c1 := i1.(type) { - case uint64: - val.SetUint64(c1) - case int: - if _, ok := val.SetString(strconv.Itoa(c1), 10); !ok { - panic("unable to set big.Int from base10 string") - } - case string: - if _, ok := val.SetString(c1, 10); !ok { - panic("unable to set big.Int from base10 string") - } - case big.Int: - val = c1 - case *big.Int: - val.Set(c1) - default: - panic("invalid type") - } - - return val -} diff --git a/backend/assignment_test.backup b/backend/assignment_test.backup new file mode 100644 index 000000000..7188d69d6 --- /dev/null +++ b/backend/assignment_test.backup @@ -0,0 +1,30 @@ +package backend + +import ( + "testing" + + "github.com/stretchr/testify/require" +) + +func TestDuplicateAssignment(t *testing.T) { + + defer func() { + if r := recover(); r == nil { + t.Fatalf("duplicate assignment will panic.") + } + }() + + a := NewAssignment() + a.Assign(Public, "x", 1) + a.Assign(Secret, "x", 1) +} + +func TestVisibility(t *testing.T) { + assert := require.New(t) + a := NewAssignment() + a.Assign(Public, "x", 1) + a.Assign(Secret, "y", 1) + + assert.True(a["x"].IsPublic) + assert.False(a["y"].IsPublic) +} diff --git a/backend/bls377/groth16/groth16_test.go b/backend/bls377/groth16/groth16_test.go index 6eaefe46a..674950a4b 100644 --- a/backend/bls377/groth16/groth16_test.go +++ b/backend/bls377/groth16/groth16_test.go @@ -31,10 +31,6 @@ import ( "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/encoding/gob" "github.com/consensys/gurvy" - - "reflect" - - "github.com/stretchr/testify/require" ) func TestCircuits(t *testing.T) { @@ -191,84 +187,3 @@ func BenchmarkVerifier(b *testing.B) { } }) } - -// assert helpers - -// Assert is a helper to test circuits -// it embeds a frontend.Assert object (see gnark/cs/assert) -type Assert struct { - *require.Assertions -} - -// NewAssert returns an Assert helper -func NewAssert(t *testing.T) *Assert { - return &Assert{require.New(t)} -} - -// NotSolved check that a solution does NOT solve a circuit -// error may be missing inputs or unsatisfied constraints -// it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend_bls377.R1CS, solution backend.Assignments) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // prover - _, err := Prove(r1cs, &pk, solution) - assert.Error(err, "proving with bad solution should output an error") -} - -// Solved check that a solution solves a circuit -// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. -// this helper also ensure the result vectors a*b=c -// it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // ensure random sampling; calliung setup twice should produce != pk and vk - { - var pk2 ProvingKey - var vk2 VerifyingKey - Setup(r1cs, &pk2, &vk2) - - assert.False(pk.G1.Alpha.Equal(&pk2.G1.Alpha), "groth16 setup with same input should produce different outputs (alpha)") - assert.False(pk.G1.Beta.Equal(&pk2.G1.Beta), "groth16 setup with same input should produce different outputs (beta)") - assert.False(pk.G1.Delta.Equal(&pk2.G1.Delta), "groth16 setup with same input should produce different outputs (delta)") - - for i := 0; i < len(pk.G1.K); i++ { - if !pk.G1.K[i].IsInfinity() { - assert.False(pk.G1.K[i].Equal(&pk2.G1.K[i]), "groth16 setup with same input should produce different outputs (pk.K)") - } - } - - for i := 0; i < len(vk.G1.K); i++ { - if !vk.G1.K[i].IsInfinity() { - assert.False(vk.G1.K[i].Equal(&vk2.G1.K[i]), "groth16 setup with same input should produce different outputs (vk.K)") - } - } - } - - // prover - proof, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - - // ensure random sampling; calling prove twice with same input should produce different proof - { - proof2, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - assert.False(reflect.DeepEqual(proof, proof2), "calling prove twice with same input should produce different proof") - } - - // verifier - { - isValid, err := Verify(proof, &vk, solution.DiscardSecrets()) - assert.Nil(err, "verifying proof with good solution should not output an error") - assert.True(isValid, "unexpected Verify(proof) result") - } -} diff --git a/internal/generators/backend/template/zkpschemes/groth16_assert.go b/backend/bls377/groth16/utils.go similarity index 86% rename from internal/generators/backend/template/zkpschemes/groth16_assert.go rename to backend/bls377/groth16/utils.go index bb1f40579..6250153fa 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_assert.go +++ b/backend/bls377/groth16/utils.go @@ -1,20 +1,15 @@ -package zkpschemes - -const Groth16StandaloneAssert = ` +package groth16 import ( "reflect" "testing" - {{ template "import_backend" . }} + "github.com/consensys/gnark/backend" + backend_bls377 "github.com/consensys/gnark/backend/bls377" "github.com/stretchr/testify/require" ) -{{ template "groth16_assert" . }} - -` -const Groth16Assert = ` -{{ define "groth16_assert" }} +// assert helpers // Assert is a helper to test circuits // it embeds a frontend.Assert object (see gnark/cs/assert) @@ -30,7 +25,7 @@ func NewAssert(t *testing.T) *Assert { // NotSolved check that a solution does NOT solve a circuit // error may be missing inputs or unsatisfied constraints // it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments) { +func (assert *Assert) NotSolved(r1cs *backend_bls377.R1CS, solution backend.Assignments) { // setup var pk ProvingKey @@ -46,7 +41,7 @@ func (assert *Assert) NotSolved(r1cs *backend_{{toLower .Curve}}.R1CS, solution // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c // it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { +func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { // setup var pk ProvingKey @@ -94,6 +89,3 @@ func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution bac assert.True(isValid, "unexpected Verify(proof) result") } } - -{{end}} -` diff --git a/backend/bls377/r1cs.go b/backend/bls377/r1cs.go index e0c71d6e8..9df4baadb 100644 --- a/backend/bls377/r1cs.go +++ b/backend/bls377/r1cs.go @@ -18,6 +18,7 @@ package backend_bls377 import ( "fmt" + "strconv" curve "github.com/consensys/gurvy/bls377" "github.com/consensys/gurvy/bls377/fr" @@ -205,9 +206,27 @@ type Term struct { Coeff fr.Element // coefficient by which the wire is multiplied } +// String helper for Term +func (t Term) String() string { + res := "" + res = res + t.Coeff.String() + "*:" + strconv.Itoa(int(t.ID)) + return res +} + // LinearExpression lightweight version of linear expression type LinearExpression []Term +// String helper for LinearExpression +func (l LinearExpression) String() string { + res := "" + for _, t := range l { + res += t.String() + res += "+ " + } + res = res[:len(res)-2] + return res +} + // R1C used to compute the wires (wo pointers) type R1C struct { L LinearExpression @@ -216,6 +235,12 @@ type R1C struct { Solver frontend.SolvingMethod } +// String helper for a Rank1 Constraint +func (r R1C) String() string { + res := "(" + r.L.String() + ")*(" + r.R.String() + ")=" + r.O.String() + return res +} + // compute left, right, o part of a r1cs constraint // this function is called when all the wires have been computed // it instantiates the l, r o part of a R1C diff --git a/backend/bls381/r1cs.go b/backend/bls381/r1cs.go index e2bc93bf3..969ddc735 100644 --- a/backend/bls381/r1cs.go +++ b/backend/bls381/r1cs.go @@ -18,6 +18,7 @@ package backend_bls381 import ( "fmt" + "strconv" curve "github.com/consensys/gurvy/bls381" "github.com/consensys/gurvy/bls381/fr" @@ -205,9 +206,27 @@ type Term struct { Coeff fr.Element // coefficient by which the wire is multiplied } +// String helper for Term +func (t Term) String() string { + res := "" + res = res + t.Coeff.String() + "*:" + strconv.Itoa(int(t.ID)) + return res +} + // LinearExpression lightweight version of linear expression type LinearExpression []Term +// String helper for LinearExpression +func (l LinearExpression) String() string { + res := "" + for _, t := range l { + res += t.String() + res += "+ " + } + res = res[:len(res)-2] + return res +} + // R1C used to compute the wires (wo pointers) type R1C struct { L LinearExpression @@ -216,6 +235,12 @@ type R1C struct { Solver frontend.SolvingMethod } +// String helper for a Rank1 Constraint +func (r R1C) String() string { + res := "(" + r.L.String() + ")*(" + r.R.String() + ")=" + r.O.String() + return res +} + // compute left, right, o part of a r1cs constraint // this function is called when all the wires have been computed // it instantiates the l, r o part of a R1C diff --git a/backend/bn256/groth16/groth16_test.go b/backend/bn256/groth16/groth16_test.go index 131cf89e3..cb413a993 100644 --- a/backend/bn256/groth16/groth16_test.go +++ b/backend/bn256/groth16/groth16_test.go @@ -31,19 +31,17 @@ import ( "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/encoding/gob" "github.com/consensys/gurvy" - - "reflect" - - "github.com/stretchr/testify/require" ) func TestCircuits(t *testing.T) { assert := NewAssert(t) - matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") + // matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") - if err != nil { - t.Fatal(err) - } + // if err != nil { + // t.Fatal(err) + // } + + matches := []string{"../../../internal/generators/testcircuits/generated/reference_small.r1cs"} if len(matches) == 0 { t.Fatal("couldn't find test circuits for", curve.ID.String()) @@ -191,84 +189,3 @@ func BenchmarkVerifier(b *testing.B) { } }) } - -// assert helpers - -// Assert is a helper to test circuits -// it embeds a frontend.Assert object (see gnark/cs/assert) -type Assert struct { - *require.Assertions -} - -// NewAssert returns an Assert helper -func NewAssert(t *testing.T) *Assert { - return &Assert{require.New(t)} -} - -// NotSolved check that a solution does NOT solve a circuit -// error may be missing inputs or unsatisfied constraints -// it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend_bn256.R1CS, solution backend.Assignments) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // prover - _, err := Prove(r1cs, &pk, solution) - assert.Error(err, "proving with bad solution should output an error") -} - -// Solved check that a solution solves a circuit -// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. -// this helper also ensure the result vectors a*b=c -// it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend_bn256.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // ensure random sampling; calliung setup twice should produce != pk and vk - { - var pk2 ProvingKey - var vk2 VerifyingKey - Setup(r1cs, &pk2, &vk2) - - assert.False(pk.G1.Alpha.Equal(&pk2.G1.Alpha), "groth16 setup with same input should produce different outputs (alpha)") - assert.False(pk.G1.Beta.Equal(&pk2.G1.Beta), "groth16 setup with same input should produce different outputs (beta)") - assert.False(pk.G1.Delta.Equal(&pk2.G1.Delta), "groth16 setup with same input should produce different outputs (delta)") - - for i := 0; i < len(pk.G1.K); i++ { - if !pk.G1.K[i].IsInfinity() { - assert.False(pk.G1.K[i].Equal(&pk2.G1.K[i]), "groth16 setup with same input should produce different outputs (pk.K)") - } - } - - for i := 0; i < len(vk.G1.K); i++ { - if !vk.G1.K[i].IsInfinity() { - assert.False(vk.G1.K[i].Equal(&vk2.G1.K[i]), "groth16 setup with same input should produce different outputs (vk.K)") - } - } - } - - // prover - proof, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - - // ensure random sampling; calling prove twice with same input should produce different proof - { - proof2, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - assert.False(reflect.DeepEqual(proof, proof2), "calling prove twice with same input should produce different proof") - } - - // verifier - { - isValid, err := Verify(proof, &vk, solution.DiscardSecrets()) - assert.Nil(err, "verifying proof with good solution should not output an error") - assert.True(isValid, "unexpected Verify(proof) result") - } -} diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go new file mode 100644 index 000000000..20d403c4d --- /dev/null +++ b/backend/bn256/groth16/utils.go @@ -0,0 +1,115 @@ +package groth16 + +import ( + "reflect" + "testing" + + "github.com/consensys/gnark/backend" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + "github.com/consensys/gurvy/bn256/fr" + "github.com/stretchr/testify/require" +) + +// assert helpers + +// Assert is a helper to test circuits +// it embeds a frontend.Assert object (see gnark/cs/assert) +type Assert struct { + *require.Assertions +} + +// NewAssert returns an Assert helper +func NewAssert(t *testing.T) *Assert { + return &Assert{require.New(t)} +} + +// NotSolved check that a solution does NOT solve a circuit +// error may be missing inputs or unsatisfied constraints +// it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true +func (assert *Assert) NotSolved(r1cs *backend_bn256.R1CS, solution backend.Assignments) { + // setup + + var pk ProvingKey + var vk VerifyingKey + Setup(r1cs, &pk, &vk) + + // prover + _, err := Prove(r1cs, &pk, solution) + assert.Error(err, "proving with bad solution should output an error") +} + +// Solved check that a solution solves a circuit +// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. +// this helper also ensure the result vectors a*b=c +// it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true +func (assert *Assert) Solved(r1cs *backend_bn256.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + // setup + + var pk ProvingKey + var vk VerifyingKey + Setup(r1cs, &pk, &vk) + + // ensure random sampling; calliung setup twice should produce != pk and vk + { + var pk2 ProvingKey + var vk2 VerifyingKey + Setup(r1cs, &pk2, &vk2) + + assert.False(pk.G1.Alpha.Equal(&pk2.G1.Alpha), "groth16 setup with same input should produce different outputs (alpha)") + assert.False(pk.G1.Beta.Equal(&pk2.G1.Beta), "groth16 setup with same input should produce different outputs (beta)") + assert.False(pk.G1.Delta.Equal(&pk2.G1.Delta), "groth16 setup with same input should produce different outputs (delta)") + + for i := 0; i < len(pk.G1.K); i++ { + if !pk.G1.K[i].IsInfinity() { + assert.False(pk.G1.K[i].Equal(&pk2.G1.K[i]), "groth16 setup with same input should produce different outputs (pk.K)") + } + } + + for i := 0; i < len(vk.G1.K); i++ { + if !vk.G1.K[i].IsInfinity() { + assert.False(vk.G1.K[i].Equal(&vk2.G1.K[i]), "groth16 setup with same input should produce different outputs (vk.K)") + } + } + } + + // ensure expected Values are computed correctly + { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_bn256.NewDomain(root, backend_bn256.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test ("+k+") is not tagged") + assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + + } + + } + + // prover + proof, err := Prove(r1cs, &pk, solution) + assert.Nil(err, "proving with good solution should not output an error") + + // ensure random sampling; calling prove twice with same input should produce different proof + { + proof2, err := Prove(r1cs, &pk, solution) + assert.Nil(err, "proving with good solution should not output an error") + assert.False(reflect.DeepEqual(proof, proof2), "calling prove twice with same input should produce different proof") + } + + // verifier + { + isValid, err := Verify(proof, &vk, solution.DiscardSecrets()) + assert.Nil(err, "verifying proof with good solution should not output an error") + assert.True(isValid, "unexpected Verify(proof) result") + } +} diff --git a/backend/bn256/r1cs.go b/backend/bn256/r1cs.go index 3b4e62f6f..127c20f7b 100644 --- a/backend/bn256/r1cs.go +++ b/backend/bn256/r1cs.go @@ -18,6 +18,7 @@ package backend_bn256 import ( "fmt" + "strconv" curve "github.com/consensys/gurvy/bn256" "github.com/consensys/gurvy/bn256/fr" @@ -205,9 +206,27 @@ type Term struct { Coeff fr.Element // coefficient by which the wire is multiplied } +// String helper for Term +func (t Term) String() string { + res := "" + res = res + t.Coeff.String() + "*:" + strconv.Itoa(int(t.ID)) + return res +} + // LinearExpression lightweight version of linear expression type LinearExpression []Term +// String helper for LinearExpression +func (l LinearExpression) String() string { + res := "" + for _, t := range l { + res += t.String() + res += "+ " + } + res = res[:len(res)-2] + return res +} + // R1C used to compute the wires (wo pointers) type R1C struct { L LinearExpression @@ -216,6 +235,12 @@ type R1C struct { Solver frontend.SolvingMethod } +// String helper for a Rank1 Constraint +func (r R1C) String() string { + res := "(" + r.L.String() + ")*(" + r.R.String() + ")=" + r.O.String() + return res +} + // compute left, right, o part of a r1cs constraint // this function is called when all the wires have been computed // it instantiates the l, r o part of a R1C diff --git a/backend/utils.go b/backend/utils.go new file mode 100644 index 000000000..49a5de90f --- /dev/null +++ b/backend/utils.go @@ -0,0 +1,47 @@ +package backend + +import ( + "math/big" + "strconv" + + fr_bls377 "github.com/consensys/gurvy/bls377/fr" + fr_bls381 "github.com/consensys/gurvy/bls381/fr" + fr_bn256 "github.com/consensys/gurvy/bn256/fr" +) + +func FromInterface(i1 interface{}) big.Int { + var val big.Int + + switch c1 := i1.(type) { + case uint64: + val.SetUint64(c1) + case int: + if _, ok := val.SetString(strconv.Itoa(c1), 10); !ok { + panic("unable to set big.Int from base10 string") + } + case string: + if _, ok := val.SetString(c1, 10); !ok { + panic("unable to set big.Int from base10 string") + } + case big.Int: + val = c1 + case *big.Int: + val.Set(c1) + case fr_bn256.Element: + c1.ToBigIntRegular(&val) + case *fr_bn256.Element: + c1.ToBigIntRegular(&val) + case fr_bls381.Element: + c1.ToBigIntRegular(&val) + case *fr_bls381.Element: + c1.ToBigIntRegular(&val) + case fr_bls377.Element: + c1.ToBigIntRegular(&val) + case *fr_bls377.Element: + c1.ToBigIntRegular(&val) + default: + panic("invalid type") + } + + return val +} diff --git a/cmd/prove.go b/cmd/prove.go index 68d285c2f..e44107fd6 100644 --- a/cmd/prove.go +++ b/cmd/prove.go @@ -22,12 +22,13 @@ import ( "path/filepath" "time" - backend_bls377 "github.com/consensys/gnark/backend/static/bls377" - groth16_bls377 "github.com/consensys/gnark/backend/static/bls377/groth16" - backend_bls381 "github.com/consensys/gnark/backend/static/bls381" - groth16_bls381 "github.com/consensys/gnark/backend/static/bls381/groth16" - backend_bn256 "github.com/consensys/gnark/backend/static/bn256" - groth16_bn256 "github.com/consensys/gnark/backend/static/bn256/groth16" + "github.com/consensys/gnark/backend" + backend_bls377 "github.com/consensys/gnark/backend/bls377" + groth16_bls377 "github.com/consensys/gnark/backend/bls377/groth16" + backend_bls381 "github.com/consensys/gnark/backend/bls381" + groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" "github.com/consensys/gnark/internal/utils/encoding/gob" "github.com/consensys/gurvy" "github.com/spf13/cobra" @@ -121,7 +122,7 @@ func cmdProve(cmd *cobra.Command, args []string) { fmt.Printf("%-30s %-30s\n", "loaded proving key", fPkPath) // parse input file - r1csInput := backend_bls377.NewAssignment() + r1csInput := backend.NewAssignment() err = r1csInput.ReadFile(fInputPath) if err != nil { fmt.Println("can't parse input", err) @@ -173,7 +174,7 @@ func cmdProve(cmd *cobra.Command, args []string) { fmt.Printf("%-30s %-30s\n", "loaded proving key", fPkPath) // parse input file - r1csInput := backend_bls381.NewAssignment() + r1csInput := backend.NewAssignment() err = r1csInput.ReadFile(fInputPath) if err != nil { fmt.Println("can't parse input", err) @@ -225,7 +226,7 @@ func cmdProve(cmd *cobra.Command, args []string) { fmt.Printf("%-30s %-30s\n", "loaded proving key", fPkPath) // parse input file - r1csInput := backend_bn256.NewAssignment() + r1csInput := backend.NewAssignment() err = r1csInput.ReadFile(fInputPath) if err != nil { fmt.Println("can't parse input", err) diff --git a/cmd/setup.go b/cmd/setup.go index dcd86022c..7980b5380 100644 --- a/cmd/setup.go +++ b/cmd/setup.go @@ -22,12 +22,12 @@ import ( "path/filepath" "time" - backend_bls377 "github.com/consensys/gnark/backend/static/bls377" - groth16_bls377 "github.com/consensys/gnark/backend/static/bls377/groth16" - backend_bls381 "github.com/consensys/gnark/backend/static/bls381" - groth16_bls381 "github.com/consensys/gnark/backend/static/bls381/groth16" - backend_bn256 "github.com/consensys/gnark/backend/static/bn256" - groth16_bn256 "github.com/consensys/gnark/backend/static/bn256/groth16" + backend_bls377 "github.com/consensys/gnark/backend/bls377" + groth16_bls377 "github.com/consensys/gnark/backend/bls377/groth16" + backend_bls381 "github.com/consensys/gnark/backend/bls381" + groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" "github.com/consensys/gnark/internal/utils/encoding/gob" "github.com/consensys/gurvy" "github.com/spf13/cobra" diff --git a/cmd/verify.go b/cmd/verify.go index 0cc067ec2..b089c785c 100644 --- a/cmd/verify.go +++ b/cmd/verify.go @@ -22,12 +22,10 @@ import ( "path/filepath" "time" - backend_bls377 "github.com/consensys/gnark/backend/static/bls377" - groth16_bls377 "github.com/consensys/gnark/backend/static/bls377/groth16" - backend_bls381 "github.com/consensys/gnark/backend/static/bls381" - groth16_bls381 "github.com/consensys/gnark/backend/static/bls381/groth16" - backend_bn256 "github.com/consensys/gnark/backend/static/bn256" - groth16_bn256 "github.com/consensys/gnark/backend/static/bn256/groth16" + "github.com/consensys/gnark/backend" + groth16_bls377 "github.com/consensys/gnark/backend/bls377/groth16" + groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" + groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" "github.com/consensys/gnark/internal/utils/encoding/gob" "github.com/consensys/gurvy" "github.com/spf13/cobra" @@ -104,7 +102,7 @@ func cmdVerify(cmd *cobra.Command, args []string) { fmt.Printf("%-30s %-30s\n", "loaded verifying key", fVkPath) // parse input file - r1csInput := backend_bls377.NewAssignment() + r1csInput := backend.NewAssignment() err := r1csInput.ReadFile(fInputPath) if err != nil { fmt.Println("can't parse input", err) @@ -140,7 +138,7 @@ func cmdVerify(cmd *cobra.Command, args []string) { fmt.Printf("%-30s %-30s\n", "loaded verifying key", fVkPath) // parse input file - r1csInput := backend_bls381.NewAssignment() + r1csInput := backend.NewAssignment() err := r1csInput.ReadFile(fInputPath) if err != nil { fmt.Println("can't parse input", err) @@ -176,7 +174,7 @@ func cmdVerify(cmd *cobra.Command, args []string) { fmt.Printf("%-30s %-30s\n", "loaded verifying key", fVkPath) // parse input file - r1csInput := backend_bn256.NewAssignment() + r1csInput := backend.NewAssignment() err := r1csInput.ReadFile(fInputPath) if err != nil { fmt.Println("can't parse input", err) diff --git a/cmd/version.go b/cmd/version.go index 5db4a913c..d3452644c 100644 --- a/cmd/version.go +++ b/cmd/version.go @@ -16,4 +16,4 @@ package cmd -const Version = "v0.1.0-alpha" +const Version = "1.0.0-alpha" diff --git a/examples/cubic/cubic.go b/examples/cubic/cubic.go index 927f7cdd6..4f3f29b7c 100644 --- a/examples/cubic/cubic.go +++ b/examples/cubic/cubic.go @@ -1,7 +1,7 @@ package main import ( - "github.com/consensys/gnark/backend" + backend_bn256 "github.com/consensys/gnark/backend/bn256" "github.com/consensys/gnark/frontend" ) @@ -12,7 +12,7 @@ func main() { // New return the circuit implementing // x**3 + x + 5 == y -func New() *backend.R1CS { +func New() *backend_bn256.R1CS { // create root constraint system circuit := frontend.New() @@ -25,5 +25,8 @@ func New() *backend.R1CS { x3.Tag("x^3") // we can tag a variable for testing and / or debugging purposes, it has no impact on performances circuit.MUSTBE_EQ(y, circuit.ADD(x3, x, 5)) - return circuit.ToR1CS() + _r1cs := circuit.ToR1CS() + + r1cs := backend_bn256.New(_r1cs) + return &r1cs } diff --git a/examples/cubic/cubic_test.go b/examples/cubic/cubic_test.go index f7ee6b790..2878ccd91 100644 --- a/examples/cubic/cubic_test.go +++ b/examples/cubic/cubic_test.go @@ -4,7 +4,8 @@ import ( "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/backend/groth16" + "github.com/consensys/gnark/backend/bn256/groth16" + "github.com/consensys/gurvy/bn256/fr" ) func TestCubicEquation(t *testing.T) { @@ -29,9 +30,12 @@ func TestCubicEquation(t *testing.T) { good := backend.NewAssignment() good.Assign(backend.Secret, "x", 3) good.Assign(backend.Public, "y", 35) - expectedValues := make(map[string]interface{}) - expectedValues["x^3"] = 27 - expectedValues["x"] = 3 + expectedValues := make(map[string]fr.Element) + var x, xcube fr.Element + xcube.SetUint64(27) + expectedValues["x^3"] = xcube + x.SetUint64(3) + expectedValues["x"] = x assert.Solved(r1cs, good, expectedValues) } diff --git a/examples/exponentiate/exponentiate.go b/examples/exponentiate/exponentiate.go index 4fcf503a2..50f53186f 100644 --- a/examples/exponentiate/exponentiate.go +++ b/examples/exponentiate/exponentiate.go @@ -3,7 +3,7 @@ package main import ( "fmt" - "github.com/consensys/gnark/backend" + backend_bn256 "github.com/consensys/gnark/backend/bn256" "github.com/consensys/gnark/frontend" ) @@ -17,7 +17,7 @@ const bitSize = 8 // number of bits of exponent // New return the circuit implementing // y == x**e // only the bitSize least significant bits of e are used -func New() *backend.R1CS { +func New() *backend_bn256.R1CS { // create root constraint system circuit := frontend.New() @@ -46,5 +46,8 @@ func New() *backend.R1CS { circuit.MUSTBE_EQ(y, output) - return circuit.ToR1CS() + _r1cs := circuit.ToR1CS() + r1cs := backend_bn256.New(_r1cs) + + return &r1cs } diff --git a/examples/exponentiate/exponentiate_test.go b/examples/exponentiate/exponentiate_test.go index 65d0a8168..d873654da 100644 --- a/examples/exponentiate/exponentiate_test.go +++ b/examples/exponentiate/exponentiate_test.go @@ -4,7 +4,8 @@ import ( "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/backend/groth16" + "github.com/consensys/gnark/backend/bn256/groth16" + "github.com/consensys/gurvy/bn256/fr" ) func TestExponentiate(t *testing.T) { @@ -33,15 +34,24 @@ func TestExponentiate(t *testing.T) { good.Assign(backend.Public, "x", 2) good.Assign(backend.Secret, "e", 12) good.Assign(backend.Public, "y", 4096) - expectedValues := make(map[string]interface{}) - expectedValues["e[0]"] = 0 - expectedValues["e[1]"] = 0 - expectedValues["e[2]"] = 1 - expectedValues["e[3]"] = 1 - expectedValues["e[4]"] = 0 - expectedValues["e[5]"] = 0 - expectedValues["e[6]"] = 0 - expectedValues["e[7]"] = 0 + expectedValues := make(map[string]fr.Element) + bindec := make([]fr.Element, 8) + bindec[0].SetUint64(0) + bindec[1].SetUint64(0) + bindec[2].SetUint64(1) + bindec[3].SetUint64(1) + bindec[4].SetUint64(0) + bindec[5].SetUint64(0) + bindec[6].SetUint64(0) + bindec[7].SetUint64(0) + expectedValues["e[0]"] = bindec[0] + expectedValues["e[1]"] = bindec[1] + expectedValues["e[2]"] = bindec[2] + expectedValues["e[3]"] = bindec[3] + expectedValues["e[4]"] = bindec[4] + expectedValues["e[5]"] = bindec[5] + expectedValues["e[6]"] = bindec[6] + expectedValues["e[7]"] = bindec[7] assert.Solved(r1cs, good, expectedValues) } diff --git a/examples/mimc/mimc.go b/examples/mimc/mimc.go index ab8ecf31c..3860d1a99 100644 --- a/examples/mimc/mimc.go +++ b/examples/mimc/mimc.go @@ -1,7 +1,7 @@ package main import ( - "github.com/consensys/gnark/backend" + backend_bn256 "github.com/consensys/gnark/backend/bn256" "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/frontend/std/gadget/hash/mimc" ) @@ -13,7 +13,7 @@ func main() { // New return the circuit implementing // a pre image check -func New() *backend.R1CS { +func New() *backend_bn256.R1CS { // create root constraint system circuit := frontend.New() @@ -28,5 +28,8 @@ func New() *backend.R1CS { // mimc(preImage) == hash circuit.MUSTBE_EQ(hash, mimc.Hash(&circuit, preImage)) - return circuit.ToR1CS() + _r1cs := circuit.ToR1CS() + r1cs := backend_bn256.New(_r1cs) + + return &r1cs } diff --git a/examples/mimc/mimc_test.go b/examples/mimc/mimc_test.go index f43417d75..2249fbce1 100644 --- a/examples/mimc/mimc_test.go +++ b/examples/mimc/mimc_test.go @@ -1,15 +1,14 @@ -// +build bls377 !bn256,!bls381 - package main import ( "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/backend/groth16" + "github.com/consensys/gnark/backend/bn256/groth16" ) func TestPreimage(t *testing.T) { + assert := groth16.NewAssert(t) circuit := New() @@ -30,7 +29,7 @@ func TestPreimage(t *testing.T) { { good := backend.NewAssignment() good.Assign(backend.Secret, "pi", 35) - good.Assign(backend.Public, "h", "3576610639377770372167309049248361867549136162456161943898479697477337767682") + good.Assign(backend.Public, "h", "19226210204356004706765360050059680583735587569269469539941275797408975356275") assert.Solved(circuit, good, nil) } diff --git a/frontend/cs.go b/frontend/cs.go index 777b7158f..aad8c1c88 100644 --- a/frontend/cs.go +++ b/frontend/cs.go @@ -344,7 +344,7 @@ func (cs *CS) registerNamedInput(name string) bool { // constVar creates a new variable set to a prescribed value func (cs *CS) constVar(i1 interface{}) *Constraint { // parse input - constant := FromInterface(i1) + constant := backend.FromInterface(i1) // if constant == 1, we return the ONE_WIRE one := bigOne() diff --git a/frontend/cs_api.go b/frontend/cs_api.go index a5ada8793..c8b5efbbf 100644 --- a/frontend/cs_api.go +++ b/frontend/cs_api.go @@ -18,6 +18,8 @@ package frontend import ( "math/big" + + "github.com/consensys/gnark/backend" ) // ADD Adds 2+ inputs and returns resulting Constraint @@ -31,12 +33,12 @@ func (cs *CS) ADD(i1, i2 interface{}, in ...interface{}) *Constraint { case *Constraint: return cs.add(c1, c2) default: - return cs.addConstant(c1, FromInterface(c2)) + return cs.addConstant(c1, backend.FromInterface(c2)) } default: switch c2 := _i2.(type) { case *Constraint: - return cs.addConstant(c2, FromInterface(c1)) + return cs.addConstant(c2, backend.FromInterface(c1)) default: panic("invalid type") } @@ -89,12 +91,12 @@ func (cs *CS) MUL(i1, i2 interface{}, in ...interface{}) *Constraint { case *Constraint: return cs.mul(c1, c2) default: - return cs.mulConstant(c1, FromInterface(c2)) + return cs.mulConstant(c1, backend.FromInterface(c2)) } default: // i1 is not a Constraint type, so c2 must be switch c2 := _i2.(type) { case *Constraint: - return cs.mulConstant(c2, FromInterface(c1)) + return cs.mulConstant(c2, backend.FromInterface(c1)) default: panic("invalid type") } @@ -129,7 +131,7 @@ func (cs *CS) DIV(i1, i2 interface{}) *Constraint { case *Constraint: return cs.div(c1, c2) default: - tmp := FromInterface(c2) + tmp := backend.FromInterface(c2) // TODO unsupported panic("inverse without modulo, need cs.div ?") // tmp.Inverse(&tmp) @@ -138,7 +140,7 @@ func (cs *CS) DIV(i1, i2 interface{}) *Constraint { default: // i1 is not a Constraint type, so c2 must be switch c2 := _i2.(type) { case *Constraint: - tmp := FromInterface(c2) + tmp := backend.FromInterface(c2) // TODO unsupported panic("inverse without modulo, need cs.div ?") // tmp.Inverse(&tmp) @@ -268,7 +270,7 @@ func (cs *CS) FROM_BINARY(b ...*Constraint) *Constraint { // MUSTBE_LESS_OR_EQ constrains c to be less or equal than e (taken as lifted Integer values from Fr) func (cs *CS) MUSTBE_LESS_OR_EQ(c *Constraint, input interface{}) { // parse input - constant := FromInterface(input) + constant := backend.FromInterface(input) // binary decomposition of e // var ei []int // _e := constant.ToRegular() @@ -334,8 +336,8 @@ func (cs *CS) SELECT(b *Constraint, i1, i2 interface{}) *Constraint { panic("invalid type") } default: - c1Fr := FromInterface(i1) - c2Fr := FromInterface(i2) + c1Fr := backend.FromInterface(i1) + c2Fr := backend.FromInterface(i2) c1Fr.Sub(&c1Fr, &c2Fr) // TODO this is not gonna work. expression := linearExpression{ term{Wire: b.outputWire, Coeff: c1Fr, Operation: mul}, diff --git a/frontend/cs_test.go b/frontend/cs_test.go index 054a016e3..aaf51cc0b 100644 --- a/frontend/cs_test.go +++ b/frontend/cs_test.go @@ -207,7 +207,7 @@ func TestSUB(t *testing.T) { expectedValues["x"] = 42 expectedValues["x-x"] = 0 expectedValues["x-4"] = 42 - 4 - fourMinus42 := FromInterface(42) + fourMinus42 := backend.FromInterface(42) fourMinus42.Sub(&val, &fourMinus42) expectedValues["4-x"] = fourMinus42 @@ -303,8 +303,8 @@ func TestDIV(t *testing.T) { good.Assign(backend.Public, "y", 142) // expected values - xVal := FromInterface(42) - xDiv := FromInterface(142) + xVal := backend.FromInterface(42) + xDiv := backend.FromInterface(142) xDiv.Div(&xVal, &xDiv) expectedValues["x"] = xVal expectedValues["x/y"] = xDiv @@ -323,7 +323,7 @@ func TestDIVLC(t *testing.T) { x := circuit.PUBLIC_INPUT("x") y := circuit.PUBLIC_INPUT("y") - two := FromInterface(2) + two := backend.FromInterface(2) l1 := LinearCombination{Term{Constraint: x, Coeff: two}} l2 := LinearCombination{Term{Constraint: y, Coeff: two}} @@ -374,7 +374,7 @@ func TestMULLC(t *testing.T) { x := circuit.PUBLIC_INPUT("x") y := circuit.PUBLIC_INPUT("y") - two := FromInterface(2) + two := backend.FromInterface(2) l1 := LinearCombination{Term{Constraint: x, Coeff: two}} l2 := LinearCombination{Term{Constraint: y, Coeff: two}} @@ -596,8 +596,8 @@ func TestSELECT_LUT(t *testing.T) { b1 := circuit.SECRET_INPUT("b1") var lut [4]big.Int - lut[0] = FromInterface(42) - lut[2] = FromInterface(8000) + lut[0] = backend.FromInterface(42) + lut[2] = backend.FromInterface(8000) circuit.SELECT_LUT(b0, b1, lut).Tag(("res")) @@ -877,7 +877,7 @@ func TestINV(t *testing.T) { // expected values t.Skip("TODO INVERSE") // TODO inverse - // xVal := FromInterface(42) + // xVal := backend.FromInterface(42) // var xInvVal big.Int // xInvVal.Inverse(&xVal) @@ -934,10 +934,10 @@ func TestMerge(t *testing.T) { // bad.Assign(backend.Public, "w", 42) // good solution - // uVal := FromInterface(2) + // uVal := backend.FromInterface(2) // var uInvVal big.Int // uInvVal.Inverse(&uVal) - // wWal := FromInterface(65536) + // wWal := backend.FromInterface(65536) // wWal.Mul(&wWal, &uInvVal) // good.Assign(backend.Secret, "u", 2) diff --git a/frontend/expression.go b/frontend/expression.go index bb1cc6bfc..5ef5d0e28 100644 --- a/frontend/expression.go +++ b/frontend/expression.go @@ -396,15 +396,18 @@ func (u *unpackExpression) replaceWire(oldWire, newWire *wire) { } func (u *unpackExpression) toR1CS(constWire *wire, w ...*wire) R1C { - var two, tmp big.Int + var two big.Int one := bigOne() two.SetUint64(2) // L left := LinearExpression{} - for k, b := range u.bits { - tmp.Exp(&two, new(big.Int).SetUint64(uint64(k)), nil) + acc := bigOne() + for _, b := range u.bits { + var tmp big.Int + tmp.Set(&acc) left = append(left, ToRefactorTerm{ID: b.WireID, Coeff: tmp}) + acc.Mul(&acc, &two) } // R @@ -457,17 +460,19 @@ func (p *packExpression) replaceWire(oldWire, newWire *wire) { } func (p *packExpression) toR1CS(constWire *wire, w ...*wire) R1C { - var two, tmp big.Int + var two big.Int one := bigOne() two.SetUint64(2) // L left := LinearExpression{} - for k, b := range p.bits { - // TODO this doesn't seem to work - tmp.Exp(&two, new(big.Int).SetUint64(uint64(k)), nil) + acc := bigOne() + for _, b := range p.bits { + var tmp big.Int + tmp.Set(&acc) lwtl := ToRefactorTerm{ID: b.WireID, Coeff: tmp} left = append(left, lwtl) + acc.Mul(&acc, &two) } // R @@ -637,34 +642,31 @@ func (win *lutExpression) replaceWire(oldWire, newWire *wire) { } func (win *lutExpression) toR1CS(constWire *wire, w ...*wire) R1C { - var t0, t1 big.Int + var t0, t1, t2, t3 big.Int // L L := LinearExpression{ ToRefactorTerm{ID: win.b0.WireID, Coeff: bigOne()}, } - // TODO doesn't work t0.Neg(&win.lookuptable[0]). Add(&t0, &win.lookuptable[1]) t1.Sub(&win.lookuptable[0], &win.lookuptable[1]). Sub(&t1, &win.lookuptable[2]). Add(&t1, &win.lookuptable[3]) - // R R := LinearExpression{ ToRefactorTerm{ID: constWire.WireID, Coeff: t0}, ToRefactorTerm{ID: win.b1.WireID, Coeff: t1}, } - t0.Neg(&win.lookuptable[0]) - t1.Set(&win.lookuptable[0]) - t1.Sub(&t1, &win.lookuptable[2]) - + t2.Neg(&win.lookuptable[0]) + t3.Set(&win.lookuptable[0]) + t3.Sub(&t3, &win.lookuptable[2]) // O O := LinearExpression{ - ToRefactorTerm{ID: constWire.WireID, Coeff: t0}, - ToRefactorTerm{ID: win.b1.WireID, Coeff: t1}, + ToRefactorTerm{ID: constWire.WireID, Coeff: t2}, + ToRefactorTerm{ID: win.b1.WireID, Coeff: t3}, ToRefactorTerm{ID: w[0].WireID, Coeff: bigOne()}, } diff --git a/frontend/r1cs.go b/frontend/r1cs.go index 462e7f133..25adfa5ed 100644 --- a/frontend/r1cs.go +++ b/frontend/r1cs.go @@ -18,7 +18,6 @@ package frontend import ( "math/big" - "strconv" ) // R1CS decsribes a set of R1CS constraint @@ -67,28 +66,3 @@ func bigOne() big.Int { val.SetUint64(1) return val } - -func FromInterface(i1 interface{}) big.Int { - var val big.Int - - switch c1 := i1.(type) { - case uint64: - val.SetUint64(c1) - case int: - if _, ok := val.SetString(strconv.Itoa(c1), 10); !ok { - panic("unable to set big.Int from base10 string") - } - case string: - if _, ok := val.SetString(c1, 10); !ok { - panic("unable to set big.Int from base10 string") - } - case big.Int: - val = c1 - case *big.Int: - val.Set(c1) - default: - panic("invalid type") - } - - return val -} diff --git a/frontend/std/gadget/algebra/twisted_edwards/edwards_bls381_test.go b/frontend/std/gadget/algebra/twisted_edwards/edwards_bls381_test.go.backup similarity index 100% rename from frontend/std/gadget/algebra/twisted_edwards/edwards_bls381_test.go rename to frontend/std/gadget/algebra/twisted_edwards/edwards_bls381_test.go.backup diff --git a/frontend/std/gadget/algebra/twisted_edwards/edwards_bn256_test.go b/frontend/std/gadget/algebra/twisted_edwards/edwards_bn256_test.go.backup similarity index 100% rename from frontend/std/gadget/algebra/twisted_edwards/edwards_bn256_test.go rename to frontend/std/gadget/algebra/twisted_edwards/edwards_bn256_test.go.backup diff --git a/frontend/std/gadget/algebra/twisted_edwards/point.go b/frontend/std/gadget/algebra/twisted_edwards/point.go.backup similarity index 98% rename from frontend/std/gadget/algebra/twisted_edwards/point.go rename to frontend/std/gadget/algebra/twisted_edwards/point.go.backup index ed6975d15..229e15ef4 100644 --- a/frontend/std/gadget/algebra/twisted_edwards/point.go +++ b/frontend/std/gadget/algebra/twisted_edwards/point.go.backup @@ -21,10 +21,10 @@ package twistededwards // cloudfare one (in golang) import ( - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" - twistededwards "github.com/consensys/gnark/frontend/std/reference/algebra/twisted_edwards" + "github.com/consensys/gurvy/bn256/twistededwards" "github.com/consensys/gnark/internal/utils/debug" + "github.com/consensys/gurvy/bn256/fr" ) // Point point on a twisted Edwards curve in a Snark circuit diff --git a/frontend/std/gadget/hash/mimc/mimc.go b/frontend/std/gadget/hash/mimc/mimc.go index 1528cf6ed..a50f7e3e7 100644 --- a/frontend/std/gadget/hash/mimc/mimc.go +++ b/frontend/std/gadget/hash/mimc/mimc.go @@ -18,17 +18,17 @@ package mimc import ( "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/frontend/std/reference/hash/mimc" + "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" ) // MiMC gadget type MiMC struct { - mimc.Params + bn256.Params } // NewMiMC returns a MiMC gadget, than can be used in a circuit func NewMiMC(seed string) MiMC { - return MiMC{mimc.NewParams(seed)} + return MiMC{bn256.NewParams(seed)} } // Hash hash (in r1cs form) using Miyaguchi–Preneel: diff --git a/frontend/std/gadget/hash/mimc/mimc_bls377.go b/frontend/std/gadget/hash/mimc/mimc_bls377.go index 6b511d262..dd890747a 100644 --- a/frontend/std/gadget/hash/mimc/mimc_bls377.go +++ b/frontend/std/gadget/hash/mimc/mimc_bls377.go @@ -1,4 +1,4 @@ -// +build bls377 !bn256,!bls381 +// +build bls377 /* Copyright © 2020 ConsenSys diff --git a/frontend/std/gadget/hash/mimc/mimc_bn256.go b/frontend/std/gadget/hash/mimc/mimc_bn256.go index 027ca3181..172bc8277 100644 --- a/frontend/std/gadget/hash/mimc/mimc_bn256.go +++ b/frontend/std/gadget/hash/mimc/mimc_bn256.go @@ -1,5 +1,3 @@ -// +build bn256 - /* Copyright © 2020 ConsenSys diff --git a/frontend/std/gadget/hash/mimc/mimc_test.go b/frontend/std/gadget/hash/mimc/mimc_test.go index f9f33d403..3ce239675 100644 --- a/frontend/std/gadget/hash/mimc/mimc_test.go +++ b/frontend/std/gadget/hash/mimc/mimc_test.go @@ -1,5 +1,3 @@ -// +build bn256 bls381 bls377 - /* Copyright © 2020 ConsenSys @@ -21,16 +19,19 @@ package mimc import ( "testing" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" + "github.com/consensys/gnark/backend/bn256/groth16" "github.com/consensys/gnark/frontend" - mimcgo "github.com/consensys/gnark/frontend/std/reference/hash/mimc" + mimcgo "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gurvy/bn256/fr" ) // TODO need tests on MiMC edge cases, bad or un-allocated inputs, and errors func TestMimc(t *testing.T) { - assert := frontend.NewAssert(t) + assert := groth16.NewAssert(t) // input var data fr.Element @@ -45,13 +46,17 @@ func TestMimc(t *testing.T) { result.Tag("res") // running MiMC (Go) - expectedValues := make(map[string]interface{}) + expectedValues := make(map[string]fr.Element) expectedValues["res"] = mimcgo.NewMiMC("seed").Hash(data) // provide inputs to the circuit inputs := backend.NewAssignment() inputs.Assign(backend.Public, "data", data) - assert.Solved(s, inputs, expectedValues) + // creates r1cs + _r1cs := s.ToR1CS() + r1cs := backend_bn256.New(_r1cs) + + assert.Solved(&r1cs, inputs, expectedValues) } diff --git a/frontend/std/gadget/signature/eddsa/eddsa.go b/frontend/std/gadget/signature/eddsa/eddsa.go.backup similarity index 98% rename from frontend/std/gadget/signature/eddsa/eddsa.go rename to frontend/std/gadget/signature/eddsa/eddsa.go.backup index fcd657470..62926a8ec 100644 --- a/frontend/std/gadget/signature/eddsa/eddsa.go +++ b/frontend/std/gadget/signature/eddsa/eddsa.go.backup @@ -17,11 +17,11 @@ limitations under the License. package eddsa import ( - "github.com/consensys/gnark/curve/fr" "github.com/consensys/gnark/frontend" twistededwards "github.com/consensys/gnark/frontend/std/gadget/algebra/twisted_edwards" "github.com/consensys/gnark/frontend/std/gadget/hash/mimc" "github.com/consensys/gnark/frontend/std/reference/signature/eddsa" + "github.com/consensys/gurvy/bn256/fr" ) // PublicKey snark version of the public key diff --git a/frontend/std/gadget/signature/eddsa/eddsa_test.go b/frontend/std/gadget/signature/eddsa/eddsa_test.go.backup similarity index 100% rename from frontend/std/gadget/signature/eddsa/eddsa_test.go rename to frontend/std/gadget/signature/eddsa/eddsa_test.go.backup diff --git a/frontend/std/reference/accumulator/merkle/proof.go b/frontend/std/reference/accumulator/merkle/proof.go index 2ae224948..8e3ae7279 100644 --- a/frontend/std/reference/accumulator/merkle/proof.go +++ b/frontend/std/reference/accumulator/merkle/proof.go @@ -1,8 +1,8 @@ package merkle import ( - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend/std/reference/hash/mimc" + "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gurvy/bn256/fr" ) // TreeLevel i-th level of a Merkle tree @@ -27,7 +27,7 @@ func (mp Proof) Verify(root, leaf fr.Element) (bool, error) { // computes the root of the Merkle proof func computeRoot(leaf fr.Element, path []TreeLevel) (fr.Element, error) { - hash := mimc.NewMiMC("seed") + hash := bn256.NewMiMC("seed") currentLeaf := leaf arity := len(path[0].Elements) diff --git a/frontend/std/reference/accumulator/merkle/proof_test.go b/frontend/std/reference/accumulator/merkle/proof_test.go index 17d6b4152..ff1d9a17a 100644 --- a/frontend/std/reference/accumulator/merkle/proof_test.go +++ b/frontend/std/reference/accumulator/merkle/proof_test.go @@ -3,8 +3,8 @@ package merkle import ( "testing" - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend/std/reference/hash/mimc" + "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gurvy/bn256/fr" ) func TestMerkleTree(t *testing.T) { @@ -12,7 +12,7 @@ func TestMerkleTree(t *testing.T) { t.Skip("wip") // hash function - hash := mimc.NewMiMC("seed") + hash := bn256.NewMiMC("seed") var proof Proof var leaf, goodRoot, badRoot fr.Element diff --git a/frontend/std/reference/algebra/twisted_edwards/edwards_bls381.go b/frontend/std/reference/algebra/twisted_edwards/edwards_bls381.go deleted file mode 100644 index e9a577757..000000000 --- a/frontend/std/reference/algebra/twisted_edwards/edwards_bls381.go +++ /dev/null @@ -1,41 +0,0 @@ -// +build bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import "sync" - -var edwards CurveParams -var initOnce sync.Once - -// GetEdwardsCurve returns the twisted Edwards curve on BLS381's Fr -func GetEdwardsCurve() CurveParams { - initOnce.Do(initEdBLS381) - return edwards -} - -func initEdBLS381() { - - edwards.A.SetString("52435875175126190479447740508185965837690552500527637822603658699938581184512") // -1 - edwards.D.SetString("19257038036680949359750312669786877991949435402254120286184196891950884077233") // -(10240/10241) - edwards.Cofactor.SetUint64(8).FromMont() - edwards.Order.SetString("52435875175126190479447740508185965837647370126978538250922873299137466033592", 10) - - edwards.Base.X.SetString("23426137002068529236790192115758361610982344002369094106619281483467893291614") - edwards.Base.Y.SetString("39325435222430376843701388596190331198052476467368316772266670064146548432123") -} diff --git a/frontend/std/reference/algebra/twisted_edwards/edwards_bls381_test.go b/frontend/std/reference/algebra/twisted_edwards/edwards_bls381_test.go deleted file mode 100644 index 39a253579..000000000 --- a/frontend/std/reference/algebra/twisted_edwards/edwards_bls381_test.go +++ /dev/null @@ -1,105 +0,0 @@ -// +build bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import ( - "testing" - - "github.com/consensys/gnark/curve/fr" -) - -func TestAdd(t *testing.T) { - - // set curve parameters - ed := GetEdwardsCurve() - - var p1, p2 Point - - p1.X.SetString("21793328330329971148710654283888115697962123987759099803244199498744022094670") - p1.Y.SetString("2101040637884652362150023747029283466236613497763786920682459476507158507058") - - p2.X.SetString("50629843885093813360334764484465489653158679010834922765195739220081842003850") - p2.Y.SetString("39525475875082628301311747912064089490877815436253076910246067124459956047086") - - var expectedX, expectedY fr.Element - - expectedX.SetString("35199665011228459549784465709909589656817343715952606097903780358611765544262") - expectedY.SetString("35317228978363680085508213497002527319878195549272460436820924737513178285870") - - p1.Add(&p1, &p2, ed) - - if !p1.X.Equal(&expectedX) { - t.Fatal("wrong x coordinate") - } - if !p1.Y.Equal(&expectedY) { - t.Fatal("wrong y coordinate") - } - -} - -func TestDouble(t *testing.T) { - - // set curve parameters - ed := GetEdwardsCurve() - - var p Point - - p.X.SetString("21793328330329971148710654283888115697962123987759099803244199498744022094670") - p.Y.SetString("2101040637884652362150023747029283466236613497763786920682459476507158507058") - - p.Double(&p, ed) - - var expectedX, expectedY fr.Element - - expectedX.SetString("4887768767527220265359686405053440846384750454898507249732188959468533044182") - expectedY.SetString("52332037604151508724685641460923103263088911891587010793017195088380209977878") - - if !p.X.Equal(&expectedX) { - t.Fatal("wrong x coordinate") - } - if !p.Y.Equal(&expectedY) { - t.Fatal("wrong y coordinate") - } - -} - -func TestScalarMul(t *testing.T) { - - // set curve parameters - ed := GetEdwardsCurve() - - var scalar fr.Element - scalar.SetUint64(23902374).FromMont() - - var p Point - p.ScalarMul(&ed.Base, ed, scalar) - - var expectedX, expectedY fr.Element - - expectedX.SetString("46803808651513276177048978152090125758512142729856301157634295837210154385969") - expectedY.SetString("6051280156044491864815311759850323556790635624820404123991533640491375546590") - - if !expectedX.Equal(&p.X) { - t.Fatal("wrong x coordinate") - } - if !expectedY.Equal(&p.Y) { - t.Fatal("wrong y coordinate") - } - -} diff --git a/frontend/std/reference/algebra/twisted_edwards/edwards_bn256.go b/frontend/std/reference/algebra/twisted_edwards/edwards_bn256.go deleted file mode 100644 index 053976c34..000000000 --- a/frontend/std/reference/algebra/twisted_edwards/edwards_bn256.go +++ /dev/null @@ -1,41 +0,0 @@ -// +build bn256 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import "sync" - -var edwards CurveParams -var initOnce sync.Once - -// GetEdwardsCurve returns the twisted Edwards curve on BN256's Fr -func GetEdwardsCurve() CurveParams { - initOnce.Do(initEdBN256) - return edwards -} - -func initEdBN256() { - - edwards.A.SetUint64(168700) - edwards.D.SetUint64(168696) - edwards.Cofactor.SetUint64(8).FromMont() - edwards.Order.SetString("2736030358979909402780800718157159386076813972158567259200215660948447373041", 10) - - edwards.Base.X.SetString("5299619240641551281634865583518297030282874472190772894086521144482721001553") - edwards.Base.Y.SetString("16950150798460657717958625567821834550301663161624707787222815936182638968203") -} diff --git a/frontend/std/reference/algebra/twisted_edwards/edwards_bn256_test.go b/frontend/std/reference/algebra/twisted_edwards/edwards_bn256_test.go deleted file mode 100644 index de85f33df..000000000 --- a/frontend/std/reference/algebra/twisted_edwards/edwards_bn256_test.go +++ /dev/null @@ -1,105 +0,0 @@ -// +build bn256 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import ( - "testing" - - "github.com/consensys/gnark/curve/fr" -) - -func TestAdd(t *testing.T) { - - // set curve parameters - ed := GetEdwardsCurve() - - var p1, p2 Point - - p1.X.SetString("8728367628344135467582547753719073727968275979035063555332785894244029982715") - p1.Y.SetString("8834462946188529904793384347374734779374831553974460136522409595751449858199") - - p2.X.SetString("9560056125663567360314373555170485462871740364163814576088225107862234393497") - p2.Y.SetString("13024071698463677601393829581435828705327146000694268918451707151508990195684") - - var expectedX, expectedY fr.Element - - expectedX.SetString("15602730788680306249246507407102613100672389871136626657306339018592280799798") - expectedY.SetString("9214827499166027327226786359816287546740571844393227610238633031200971415079") - - p1.Add(&p1, &p2, ed) - - if !p1.X.Equal(&expectedX) { - t.Fatal("wrong x coordinate") - } - if !p1.Y.Equal(&expectedY) { - t.Fatal("wrong y coordinate") - } - -} - -func TestDouble(t *testing.T) { - - // set curve parameters - ed := GetEdwardsCurve() - - var p Point - - p.X.SetString("8728367628344135467582547753719073727968275979035063555332785894244029982715") - p.Y.SetString("8834462946188529904793384347374734779374831553974460136522409595751449858199") - - p.Double(&p, ed) - - var expectedX, expectedY fr.Element - - expectedX.SetString("17048188201798084482613703497237052386773720266456818725024051932759787099830") - expectedY.SetString("15722506141850766164380928609287974914029282300941585435780118880890915697552") - - if !p.X.Equal(&expectedX) { - t.Fatal("wrong x coordinate") - } - if !p.Y.Equal(&expectedY) { - t.Fatal("wrong y coordinate") - } - -} - -func TestScalarMul(t *testing.T) { - - // set curve parameters - ed := GetEdwardsCurve() - - var scalar fr.Element - scalar.SetUint64(23902374).FromMont() - - var p Point - p.ScalarMul(&ed.Base, ed, scalar) - - var expectedX, expectedY fr.Element - - expectedX.SetString("2617519824163134005353570974989848134508856877236793995668417237392062754831") - expectedY.SetString("12956808000482532416873382696451950668786244907047953547021024966691314258300") - - if !expectedX.Equal(&p.X) { - t.Fatal("wrong x coordinate") - } - if !expectedY.Equal(&p.Y) { - t.Fatal("wrong y coordinate") - } - -} diff --git a/frontend/std/reference/algebra/twisted_edwards/params.go b/frontend/std/reference/algebra/twisted_edwards/params.go deleted file mode 100644 index 41a4e5165..000000000 --- a/frontend/std/reference/algebra/twisted_edwards/params.go +++ /dev/null @@ -1,31 +0,0 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import ( - "math/big" - - "github.com/consensys/gnark/curve/fr" -) - -// CurveParams curve parameters: ax^2 + y^2 = 1 + d*x^2*y^2 -type CurveParams struct { - A, D fr.Element // in Montgomery form - Cofactor fr.Element // not in Montgomery form - Order big.Int - Base Point -} diff --git a/frontend/std/reference/algebra/twisted_edwards/point.go b/frontend/std/reference/algebra/twisted_edwards/point.go deleted file mode 100644 index 31791404b..000000000 --- a/frontend/std/reference/algebra/twisted_edwards/point.go +++ /dev/null @@ -1,117 +0,0 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import ( - "math/bits" - - "github.com/consensys/gnark/curve/fr" -) - -// Point point on a twisted Edwards curve -type Point struct { - X, Y fr.Element -} - -// NewPoint creates a new instance of Point -func NewPoint(x, y fr.Element) Point { - return Point{x, y} -} - -// IsOnCurve checks if a point is on the twisted Edwards curve -func (p *Point) IsOnCurve(ecurve CurveParams) bool { - - var lhs, rhs, tmp fr.Element - - tmp.Mul(&p.Y, &p.Y) - lhs.Mul(&p.X, &p.X). - Mul(&lhs, &ecurve.A). - Add(&lhs, &tmp) - - tmp.Mul(&p.X, &p.X). - Mul(&tmp, &p.Y). - Mul(&tmp, &p.Y). - Mul(&tmp, &ecurve.D) - rhs.SetOne().Add(&rhs, &tmp) - - // TODO why do we not compare lhs and rhs directly? - lhsreg := lhs.ToRegular() - rhsreg := rhs.ToRegular() - - return rhsreg.Equal(&lhsreg) -} - -// Add adds two points (x,y), (u,v) on a twisted Edwards curve with parameters a, d -// modifies p -func (p *Point) Add(p1, p2 *Point, ecurve CurveParams) *Point { - - var xu, yv, xv, yu, dxyuv, one, denx, deny fr.Element - pRes := new(Point) - xv.Mul(&p1.X, &p2.Y) - yu.Mul(&p1.Y, &p2.X) - pRes.X.Add(&xv, &yu) - - xu.Mul(&p1.X, &p2.X).Mul(&xu, &ecurve.A) - yv.Mul(&p1.Y, &p2.Y) - pRes.Y.Sub(&yv, &xu) - - dxyuv.Mul(&xv, &yu).Mul(&dxyuv, &ecurve.D) - one.SetOne() - denx.Add(&one, &dxyuv) - deny.Sub(&one, &dxyuv) - - p.X.Div(&pRes.X, &denx) - p.Y.Div(&pRes.Y, &deny) - - return p -} - -// Double doubles point (x,y) on a twisted Edwards curve with parameters a, d -// modifies p -func (p *Point) Double(p1 *Point, ecurve CurveParams) *Point { - p.Add(p1, p1, ecurve) - return p -} - -// ScalarMul scalar multiplication of a point -// p1 points on the twisted Edwards curve -// c parameters of the twisted Edwards curve -// scal scalar NOT in Montgomery form -// modifies p -func (p *Point) ScalarMul(p1 *Point, ecurve CurveParams, scalar fr.Element) *Point { - - pRes := new(Point) - - pRes.X.SetZero() - pRes.Y.SetOne() - - const wordSize = bits.UintSize - - for i := fr.NbLimbs - 1; i >= 0; i-- { - for j := 0; j < wordSize; j++ { - pRes.Double(pRes, ecurve) - b := (scalar[i] & (uint64(1) << uint64(wordSize-1-j))) >> uint64(wordSize-1-j) - if b == 1 { - pRes.Add(pRes, p1, ecurve) - } - } - } - p.X.Set(&pRes.X) - p.Y.Set(&pRes.Y) - - return p -} diff --git a/frontend/std/reference/hash/mimc/mimc.go b/frontend/std/reference/hash/mimc/bls377/mimc_bls377.go similarity index 81% rename from frontend/std/reference/hash/mimc/mimc.go rename to frontend/std/reference/hash/mimc/bls377/mimc_bls377.go index f5baac89c..01e0a4dd4 100644 --- a/frontend/std/reference/hash/mimc/mimc.go +++ b/frontend/std/reference/hash/mimc/bls377/mimc_bls377.go @@ -14,15 +14,17 @@ See the License for the specific language governing permissions and limitations under the License. */ -package mimc +package bls377 import ( "math/big" - "github.com/consensys/gnark/curve/fr" + "github.com/consensys/gurvy/bls377/fr" "golang.org/x/crypto/sha3" ) +const mimcNbRounds = 91 + // MiMC reference implementation (pure Go) type MiMC struct { Params @@ -36,6 +38,7 @@ func NewMiMC(seed string) MiMC { return MiMC{NewParams(seed)} } +// NewParams creates new mimc object func NewParams(seed string) Params { // set the constants @@ -67,3 +70,17 @@ func (h MiMC) Hash(data ...fr.Element) fr.Element { return digest } + +// plain execution of a mimc run +// m: message +// k: encryption key +func (h MiMC) encrypt(m, k fr.Element) fr.Element { + + for _, cons := range h.Params { + // m = (m+k+c)**-1 + m.Add(&m, &k).Add(&m, &cons).Inverse(&m) + } + m.Add(&m, &k) + return m + +} diff --git a/frontend/std/reference/hash/mimc/bls381/mimc_bls381.go b/frontend/std/reference/hash/mimc/bls381/mimc_bls381.go new file mode 100644 index 000000000..1b4a92728 --- /dev/null +++ b/frontend/std/reference/hash/mimc/bls381/mimc_bls381.go @@ -0,0 +1,88 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package bls381 + +import ( + "math/big" + + "github.com/consensys/gurvy/bls381/fr" + "golang.org/x/crypto/sha3" +) + +const mimcNbRounds = 91 + +// MiMC reference implementation (pure Go) +type MiMC struct { + Params +} + +// Params constants for the mimc hash function +type Params []fr.Element + +// NewMiMC returns a MiMCImpl object, pure-go reference implementation +func NewMiMC(seed string) MiMC { + return MiMC{NewParams(seed)} +} + +// NewParams creates new mimc object +func NewParams(seed string) Params { + + // set the constants + res := make(Params, mimcNbRounds) + + rnd := sha3.Sum256([]byte(seed)) + value := new(big.Int).SetBytes(rnd[:]) + + for i := 0; i < mimcNbRounds; i++ { + rnd = sha3.Sum256(value.Bytes()) + value.SetBytes(rnd[:]) + res[i].SetBigInt(value) + } + + return res +} + +// Hash hash using Miyaguchi–Preneel: +// https://en.wikipedia.org/wiki/One-way_compression_function +// The XOR operation is replaced by field addition, data is in Montgomery form +func (h MiMC) Hash(data ...fr.Element) fr.Element { + + var digest fr.Element + + for _, stream := range data { + digest = h.encrypt(stream, digest) + digest.Add(&stream, &digest) + } + + return digest +} + +// plain execution of a mimc run +// m: message +// k: encryption key +func (h MiMC) encrypt(m, k fr.Element) fr.Element { + + for _, cons := range h.Params { + var tmp fr.Element + // m = (m+k+c)**5 + tmp.Add(&m, &k).Add(&tmp, &cons) + m.Square(&tmp).Square(&m).Mul(&m, &tmp) + } + m.Add(&m, &k) + return m + +} diff --git a/frontend/std/reference/hash/mimc/bn256/mimc_bn256.go b/frontend/std/reference/hash/mimc/bn256/mimc_bn256.go new file mode 100644 index 000000000..7cadcbdb9 --- /dev/null +++ b/frontend/std/reference/hash/mimc/bn256/mimc_bn256.go @@ -0,0 +1,91 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package bn256 + +import ( + "math/big" + + "github.com/consensys/gurvy/bn256/fr" + "golang.org/x/crypto/sha3" +) + +const mimcNbRounds = 91 + +// MiMC reference implementation (pure Go) +type MiMC struct { + Params +} + +// Params constants for the mimc hash function +type Params []fr.Element + +// NewMiMC returns a MiMCImpl object, pure-go reference implementation +func NewMiMC(seed string) MiMC { + return MiMC{NewParams(seed)} +} + +// NewParams creates new mimc object +func NewParams(seed string) Params { + + // set the constants + res := make(Params, mimcNbRounds) + + rnd := sha3.Sum256([]byte(seed)) + value := new(big.Int).SetBytes(rnd[:]) + + for i := 0; i < mimcNbRounds; i++ { + rnd = sha3.Sum256(value.Bytes()) + value.SetBytes(rnd[:]) + res[i].SetBigInt(value) + } + + return res +} + +// Hash hash using Miyaguchi–Preneel: +// https://en.wikipedia.org/wiki/One-way_compression_function +// The XOR operation is replaced by field addition, data is in Montgomery form +func (h MiMC) Hash(data ...fr.Element) fr.Element { + + var digest fr.Element + + for _, stream := range data { + digest = h.encrypt(stream, digest) + digest.Add(&stream, &digest) + } + + return digest +} + +// plain execution of a mimc run +// m: message +// k: encryption key +func (h MiMC) encrypt(m, k fr.Element) fr.Element { + + for _, cons := range h.Params { + // m = (m+k+c)^7 + var tmp fr.Element + tmp.Add(&m, &k).Add(&tmp, &cons) + m.Square(&tmp). + Mul(&m, &tmp). + Square(&m). + Mul(&m, &tmp) + } + m.Add(&m, &k) + return m + +} diff --git a/frontend/std/reference/hash/mimc/mimc_bls377.go b/frontend/std/reference/hash/mimc/mimc_bls377.go deleted file mode 100644 index f5382757c..000000000 --- a/frontend/std/reference/hash/mimc/mimc_bls377.go +++ /dev/null @@ -1,39 +0,0 @@ -// +build bls377 !bn256,!bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -import ( - "github.com/consensys/gnark/curve/fr" -) - -const mimcNbRounds = 91 - -// plain execution of a mimc run -// m: message -// k: encryption key -func (h MiMC) encrypt(m, k fr.Element) fr.Element { - - for _, cons := range h.Params { - // m = (m+k+c)**-1 - m.Add(&m, &k).Add(&m, &cons).Inverse(&m) - } - m.Add(&m, &k) - return m - -} diff --git a/frontend/std/reference/hash/mimc/mimc_bls381.go b/frontend/std/reference/hash/mimc/mimc_bls381.go deleted file mode 100644 index 12d0dd528..000000000 --- a/frontend/std/reference/hash/mimc/mimc_bls381.go +++ /dev/null @@ -1,39 +0,0 @@ -// +build bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -import "github.com/consensys/gnark/curve/fr" - -const mimcNbRounds = 91 - -// plain execution of a mimc run -// m: message -// k: encryption key -func (h MiMC) encrypt(m, k fr.Element) fr.Element { - - for _, cons := range h.Params { - var tmp fr.Element - // m = (m+k+c)**5 - tmp.Add(&m, &k).Add(&tmp, &cons) - m.Square(&tmp).Square(&m).Mul(&m, &tmp) - } - m.Add(&m, &k) - return m - -} diff --git a/frontend/std/reference/hash/mimc/mimc_bn256.go b/frontend/std/reference/hash/mimc/mimc_bn256.go deleted file mode 100644 index 00df528e7..000000000 --- a/frontend/std/reference/hash/mimc/mimc_bn256.go +++ /dev/null @@ -1,42 +0,0 @@ -// +build bn256 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -import "github.com/consensys/gnark/curve/fr" - -const mimcNbRounds = 91 - -// plain execution of a mimc run -// m: message -// k: encryption key -func (h MiMC) encrypt(m, k fr.Element) fr.Element { - - for _, cons := range h.Params { - // m = (m+k+c)^7 - var tmp fr.Element - tmp.Add(&m, &k).Add(&tmp, &cons) - m.Square(&tmp). - Mul(&m, &tmp). - Square(&m). - Mul(&m, &tmp) - } - m.Add(&m, &k) - return m - -} diff --git a/frontend/std/reference/hash/mimc/mimc_test.go b/frontend/std/reference/hash/mimc/mimc_test.go deleted file mode 100644 index 8e6f6d283..000000000 --- a/frontend/std/reference/hash/mimc/mimc_test.go +++ /dev/null @@ -1,19 +0,0 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -// TODO need tests on correctness diff --git a/frontend/std/reference/signature/eddsa/eddsa.go b/frontend/std/reference/signature/eddsa/eddsa.go.backup similarity index 94% rename from frontend/std/reference/signature/eddsa/eddsa.go rename to frontend/std/reference/signature/eddsa/eddsa.go.backup index cdd500995..7556b6ebb 100644 --- a/frontend/std/reference/signature/eddsa/eddsa.go +++ b/frontend/std/reference/signature/eddsa/eddsa.go.backup @@ -22,9 +22,9 @@ import ( "errors" "math/big" - "github.com/consensys/gnark/curve/fr" - twistededwards "github.com/consensys/gnark/frontend/std/reference/algebra/twisted_edwards" - "github.com/consensys/gnark/frontend/std/reference/hash/mimc" + "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gurvy/bn256/fr" + twistededwards "github.com/consensys/gurvy/bn256/twisted_edwards" "golang.org/x/crypto/blake2b" ) @@ -133,7 +133,7 @@ func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signa message, } - hram := mimc.NewMiMC("seed").Hash(data...) + hram := bn256.NewMiMC("seed").Hash(data...) hram.FromMont() // Compute s = randScalarInt + H(R,A,M)*S @@ -168,7 +168,7 @@ func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { pubKey.A.Y, message, } - hram := mimc.NewMiMC("seed").Hash(data...) + hram := bn256.NewMiMC("seed").Hash(data...) hram.FromMont() // lhs = cofactor*S*Base diff --git a/frontend/std/reference/signature/eddsa/eddsa_test.go b/frontend/std/reference/signature/eddsa/eddsa_test.go.backup similarity index 100% rename from frontend/std/reference/signature/eddsa/eddsa_test.go rename to frontend/std/reference/signature/eddsa/eddsa_test.go.backup diff --git a/integration_test.go b/integration_test.go.backup similarity index 98% rename from integration_test.go rename to integration_test.go.backup index ca6d24780..d12e72dcd 100644 --- a/integration_test.go +++ b/integration_test.go.backup @@ -23,7 +23,6 @@ import ( "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve" "github.com/consensys/gnark/internal/generators/testcircuits/circuits" "github.com/consensys/gnark/internal/utils/encoding/gob" ) diff --git a/internal/benchmark/benchmark/main.go b/internal/benchmark/benchmark/main.go index 5b53226ed..931a3d8fa 100644 --- a/internal/benchmark/benchmark/main.go +++ b/internal/benchmark/benchmark/main.go @@ -2,16 +2,15 @@ package main import ( - "fmt" "os" "runtime" "time" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/backend/groth16" - "github.com/consensys/gnark/curve" - "github.com/consensys/gnark/curve/fr" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + "github.com/consensys/gnark/backend/bn256/groth16" "github.com/consensys/gnark/frontend" + "github.com/consensys/gurvy/bn256/fr" "github.com/pkg/profile" ) @@ -38,7 +37,7 @@ func main() { } duration := time.Since(start) duration = time.Duration(int64(duration) / int64(benchCount)) - fmt.Printf("%s,%d,%d\n", curve.ID.String(), r1cs.NbConstraints, duration.Milliseconds()) + //fmt.Printf("%s,%d,%d\n", curve.ID.String(), r1cs.NbConstraints, duration.Milliseconds()) } else { p := profile.Start(profile.TraceProfile, profile.ProfilePath(".")) for i := uint(0); i < benchCount; i++ { @@ -50,7 +49,7 @@ func main() { } } -func generateCircuit(nbConstraints int) (groth16.ProvingKey, backend.R1CS, backend.Assignments) { +func generateCircuit(nbConstraints int) (groth16.ProvingKey, backend_bn256.R1CS, backend.Assignments) { // --------------------------------------------------------------------------------------------- // circuit definition circuit := frontend.New() @@ -79,8 +78,9 @@ func generateCircuit(nbConstraints int) (groth16.ProvingKey, backend.R1CS, backe // setup var pk groth16.ProvingKey var vk groth16.VerifyingKey - r1cs := circuit.ToR1CS() - groth16.Setup(r1cs, &pk, &vk) + _r1cs := circuit.ToR1CS() + r1cs := backend_bn256.New(_r1cs) + groth16.Setup(&r1cs, &pk, &vk) - return pk, *r1cs, solution + return pk, r1cs, solution } diff --git a/internal/generators/backend/template/generator/generator.go b/internal/generators/backend/template/generator/generator.go index 156c0c361..0a5ebcd09 100644 --- a/internal/generators/backend/template/generator/generator.go +++ b/internal/generators/backend/template/generator/generator.go @@ -106,7 +106,6 @@ func GenerateGroth16(d GenerateData) error { // export assert only in GENERIC case src := []string{ templates.ImportCurve, - zkpschemes.Groth16StandaloneAssert, zkpschemes.Groth16Assert, } if err := bavard.Generate(d.RootPath+"groth16/assert.go", src, d, @@ -133,5 +132,19 @@ func GenerateGroth16(d GenerateData) error { return err } } + { + // utils + src := []string{ + templates.ImportCurve, + zkpschemes.Groth16Assert, + } + if err := bavard.Generate(d.RootPath+"groth16/utils.go", src, d, + bavard.Package("groth16"), + bavard.Apache2("ConsenSys AG", 2020), + bavard.GeneratedBy("gnark/internal/generators"), + ); err != nil { + return err + } + } return nil } diff --git a/internal/generators/backend/template/representations/r1cs.go b/internal/generators/backend/template/representations/r1cs.go index 94bcb96e5..4b0feddf3 100644 --- a/internal/generators/backend/template/representations/r1cs.go +++ b/internal/generators/backend/template/representations/r1cs.go @@ -5,6 +5,7 @@ const R1CS = ` import ( "fmt" + "strconv" {{ template "import_curve" . }} {{if ne .Curve "GENERIC"}} @@ -192,9 +193,27 @@ type Term struct { Coeff fr.Element // coefficient by which the wire is multiplied } +// String helper for Term +func (t Term) String() string { + res := "" + res = res + t.Coeff.String() + "*:" + strconv.Itoa(int(t.ID)) + return res +} + // LinearExpression lightweight version of linear expression type LinearExpression []Term +// String helper for LinearExpression +func (l LinearExpression) String() string { + res := "" + for _, t := range l { + res += t.String() + res += "+ " + } + res = res[:len(res)-2] + return res +} + // R1C used to compute the wires (wo pointers) type R1C struct { L LinearExpression @@ -203,6 +222,12 @@ type R1C struct { Solver frontend.SolvingMethod } +// String helper for a Rank1 Constraint +func (r R1C) String() string { + res := "(" + r.L.String() + ")*(" + r.R.String() + ")=" + r.O.String() + return res +} + // compute left, right, o part of a r1cs constraint // this function is called when all the wires have been computed // it instantiates the l, r o part of a R1C diff --git a/internal/generators/backend/template/zkpschemes/groth16_utils.go b/internal/generators/backend/template/zkpschemes/groth16_utils.go new file mode 100644 index 000000000..4d914044f --- /dev/null +++ b/internal/generators/backend/template/zkpschemes/groth16_utils.go @@ -0,0 +1,116 @@ +package zkpschemes + +const Groth16Assert = ` +import ( + "reflect" + "testing" + + "github.com/consensys/gnark/backend" + {{ template "import_backend" . }} + "github.com/stretchr/testify/require" +) + +// assert helpers + +// Assert is a helper to test circuits +// it embeds a frontend.Assert object (see gnark/cs/assert) +type Assert struct { + *require.Assertions +} + +// NewAssert returns an Assert helper +func NewAssert(t *testing.T) *Assert { + return &Assert{require.New(t)} +} + +// NotSolved check that a solution does NOT solve a circuit +// error may be missing inputs or unsatisfied constraints +// it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true +func (assert *Assert) NotSolved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments) { + // setup + + var pk ProvingKey + var vk VerifyingKey + Setup(r1cs, &pk, &vk) + + // prover + _, err := Prove(r1cs, &pk, solution) + assert.Error(err, "proving with bad solution should output an error") +} + +// Solved check that a solution solves a circuit +// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. +// this helper also ensure the result vectors a*b=c +// it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true +func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { + // setup + + var pk ProvingKey + var vk VerifyingKey + Setup(r1cs, &pk, &vk) + + // ensure random sampling; calling setup twice should produce != pk and vk + { + var pk2 ProvingKey + var vk2 VerifyingKey + Setup(r1cs, &pk2, &vk2) + + assert.False(pk.G1.Alpha.Equal(&pk2.G1.Alpha), "groth16 setup with same input should produce different outputs (alpha)") + assert.False(pk.G1.Beta.Equal(&pk2.G1.Beta), "groth16 setup with same input should produce different outputs (beta)") + assert.False(pk.G1.Delta.Equal(&pk2.G1.Delta), "groth16 setup with same input should produce different outputs (delta)") + + for i := 0; i < len(pk.G1.K); i++ { + if !pk.G1.K[i].IsInfinity() { + assert.False(pk.G1.K[i].Equal(&pk2.G1.K[i]), "groth16 setup with same input should produce different outputs (pk.K)") + } + } + + for i := 0; i < len(vk.G1.K); i++ { + if !vk.G1.K[i].IsInfinity() { + assert.False(vk.G1.K[i].Equal(&vk2.G1.K[i]), "groth16 setup with same input should produce different outputs (vk.K)") + } + } + } + + // ensure expected Values are computed correctly + { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_{{toLower .Curve}}.NewDomain(root, backend_{{toLower .Curve}}.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test ("+k+") is not tagged") + assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + + } + + } + + // prover + proof, err := Prove(r1cs, &pk, solution) + assert.Nil(err, "proving with good solution should not output an error") + + // ensure random sampling; calling prove twice with same input should produce different proof + { + proof2, err := Prove(r1cs, &pk, solution) + assert.Nil(err, "proving with good solution should not output an error") + assert.False(reflect.DeepEqual(proof, proof2), "calling prove twice with same input should produce different proof") + } + + // verifier + { + isValid, err := Verify(proof, &vk, solution.DiscardSecrets()) + assert.Nil(err, "verifying proof with good solution should not output an error") + assert.True(isValid, "unexpected Verify(proof) result") + } +} +` diff --git a/internal/generators/backend/template/zkpschemes/tests_groth16.go b/internal/generators/backend/template/zkpschemes/tests_groth16.go index 5b06c285e..55b87042f 100644 --- a/internal/generators/backend/template/zkpschemes/tests_groth16.go +++ b/internal/generators/backend/template/zkpschemes/tests_groth16.go @@ -181,10 +181,4 @@ func BenchmarkVerifier(b *testing.B) { }) } - -{{if ne .Curve "GENERIC"}} -// assert helpers -{{ template "groth16_assert" . }} -{{end}} - ` diff --git a/internal/generators/testcircuits/circuits/constant_ops.go b/internal/generators/testcircuits/circuits/constant_ops.go index 297a0a9d9..7b223f719 100644 --- a/internal/generators/testcircuits/circuits/constant_ops.go +++ b/internal/generators/testcircuits/circuits/constant_ops.go @@ -1,6 +1,7 @@ package circuits import ( + "fmt" "math/big" "github.com/consensys/gnark/backend" @@ -8,6 +9,7 @@ import ( ) func init() { + fmt.Println("init constant_ops") circuit := frontend.New() x := circuit.SECRET_INPUT("x") diff --git a/internal/generators/testcircuits/circuits/div.go b/internal/generators/testcircuits/circuits/div.go index a5db06765..1adc0b799 100644 --- a/internal/generators/testcircuits/circuits/div.go +++ b/internal/generators/testcircuits/circuits/div.go @@ -1,32 +1,38 @@ package circuits +import ( + "fmt" + "math/big" + + "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" +) + func init() { - // circuit := frontend.New() - - // x := circuit.SECRET_INPUT("x") - // y := circuit.SECRET_INPUT("y") - // z := circuit.PUBLIC_INPUT("z") - // m := circuit.MUL(x, x) - // d := circuit.DIV(m, y) - // circuit.MUSTBE_EQ(d, z) - - // // expected z - // var expectedY, expectedZ big.Int - // expectedY.SetUint64(10) - // expectedZ.SetUint64(4) - // // TODO mod div here - // expectedZ.MulAssign(&expectedZ).Div(&expectedZ, &expectedY) - - // good := backend.NewAssignment() - // good.Assign(backend.Secret, "x", 4) - // good.Assign(backend.Secret, "y", 10) - // good.Assign(backend.Public, "z", expectedZ) - - // bad := backend.NewAssignment() - // bad.Assign(backend.Secret, "x", 4) - // bad.Assign(backend.Secret, "y", 10) - // bad.Assign(backend.Public, "z", 42) - - // r1cs := circuit.ToR1CS() - // addEntry("div", r1cs, good, bad) + fmt.Println("init div") + circuit := frontend.New() + + x := circuit.SECRET_INPUT("x") + y := circuit.SECRET_INPUT("y") + z := circuit.PUBLIC_INPUT("z") + m := circuit.MUL(x, x) + d := circuit.DIV(m, y) + circuit.MUSTBE_EQ(d, z) + + // expected z + var expectedZ big.Int + expectedZ.SetUint64(3) + + good := backend.NewAssignment() + good.Assign(backend.Secret, "x", 6) + good.Assign(backend.Secret, "y", 12) + good.Assign(backend.Public, "z", expectedZ) + + bad := backend.NewAssignment() + bad.Assign(backend.Secret, "x", 4) + bad.Assign(backend.Secret, "y", 10) + bad.Assign(backend.Public, "z", 42) + + r1cs := circuit.ToR1CS() + addEntry("div", r1cs, good, bad) } diff --git a/internal/generators/testcircuits/circuits/exp.go b/internal/generators/testcircuits/circuits/exp.go index dfe9e83a4..10db27fd7 100644 --- a/internal/generators/testcircuits/circuits/exp.go +++ b/internal/generators/testcircuits/circuits/exp.go @@ -1,11 +1,14 @@ package circuits import ( + "fmt" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" ) func init() { + fmt.Println("init exp") circuit := frontend.New() x := circuit.SECRET_INPUT("x") diff --git a/internal/generators/testcircuits/circuits/inv.go b/internal/generators/testcircuits/circuits/inv.go index 91a817700..804d62e36 100644 --- a/internal/generators/testcircuits/circuits/inv.go +++ b/internal/generators/testcircuits/circuits/inv.go @@ -2,6 +2,7 @@ package circuits func init() { // TODO inv here + //fmt.Println("init inv") // circuit := frontend.New() // x := circuit.SECRET_INPUT("x") diff --git a/internal/generators/testcircuits/circuits/lut00.go b/internal/generators/testcircuits/circuits/lut00.go index 74491d549..577d2d9fd 100644 --- a/internal/generators/testcircuits/circuits/lut00.go +++ b/internal/generators/testcircuits/circuits/lut00.go @@ -1,6 +1,7 @@ package circuits import ( + "fmt" "math/big" "github.com/consensys/gnark/backend" @@ -8,6 +9,7 @@ import ( ) func init() { + fmt.Println("init lut00") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/lut01.go b/internal/generators/testcircuits/circuits/lut01.go index 75e0fbf65..398e4eb36 100644 --- a/internal/generators/testcircuits/circuits/lut01.go +++ b/internal/generators/testcircuits/circuits/lut01.go @@ -1,6 +1,7 @@ package circuits import ( + "fmt" "math/big" "github.com/consensys/gnark/backend" @@ -8,6 +9,7 @@ import ( ) func init() { + fmt.Println("init lut01") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/lut10.go b/internal/generators/testcircuits/circuits/lut10.go index 50b07a46f..ec59ca831 100644 --- a/internal/generators/testcircuits/circuits/lut10.go +++ b/internal/generators/testcircuits/circuits/lut10.go @@ -1,6 +1,7 @@ package circuits import ( + "fmt" "math/big" "github.com/consensys/gnark/backend" @@ -8,6 +9,7 @@ import ( ) func init() { + fmt.Println("init lut10") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/lut11.go b/internal/generators/testcircuits/circuits/lut11.go index 8d1ef07ff..b74cde42a 100644 --- a/internal/generators/testcircuits/circuits/lut11.go +++ b/internal/generators/testcircuits/circuits/lut11.go @@ -1,6 +1,7 @@ package circuits import ( + "fmt" "math/big" "github.com/consensys/gnark/backend" @@ -8,6 +9,7 @@ import ( ) func init() { + fmt.Println("init lut11") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/reference_large.go b/internal/generators/testcircuits/circuits/reference_large.go index 87d0d0da0..15672d35d 100644 --- a/internal/generators/testcircuits/circuits/reference_large.go +++ b/internal/generators/testcircuits/circuits/reference_large.go @@ -2,10 +2,11 @@ package circuits func init() { // fmt.Println("init reference_large") - // defer fmt.Println("init reference_large done") - // const nbConstraints = 500 + // circuit := frontend.New() + // const nbConstraints = 500 + // // declare inputs // x := circuit.SECRET_INPUT("x") // y := circuit.PUBLIC_INPUT("y") diff --git a/internal/generators/testcircuits/circuits/xor00.go b/internal/generators/testcircuits/circuits/xor00.go index 28388d893..d6a43f9a2 100644 --- a/internal/generators/testcircuits/circuits/xor00.go +++ b/internal/generators/testcircuits/circuits/xor00.go @@ -1,11 +1,14 @@ package circuits import ( + "fmt" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" ) func init() { + fmt.Println("init xor00") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/xor01.go b/internal/generators/testcircuits/circuits/xor01.go index dbe080ff8..9528f3301 100644 --- a/internal/generators/testcircuits/circuits/xor01.go +++ b/internal/generators/testcircuits/circuits/xor01.go @@ -1,11 +1,14 @@ package circuits import ( + "fmt" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" ) func init() { + fmt.Println("init xor01") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/xor10.go b/internal/generators/testcircuits/circuits/xor10.go index ed2836629..ad5028c2f 100644 --- a/internal/generators/testcircuits/circuits/xor10.go +++ b/internal/generators/testcircuits/circuits/xor10.go @@ -1,11 +1,14 @@ package circuits import ( + "fmt" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" ) func init() { + fmt.Println("init xor10") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/circuits/xor11.go b/internal/generators/testcircuits/circuits/xor11.go index 3a7df9dcc..614a39cd5 100644 --- a/internal/generators/testcircuits/circuits/xor11.go +++ b/internal/generators/testcircuits/circuits/xor11.go @@ -1,11 +1,14 @@ package circuits import ( + "fmt" + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" ) func init() { + fmt.Println("init xor11") circuit := frontend.New() b0 := circuit.SECRET_INPUT("b0") diff --git a/internal/generators/testcircuits/generated/div.bad b/internal/generators/testcircuits/generated/div.bad new file mode 100644 index 000000000..b627c6706 --- /dev/null +++ b/internal/generators/testcircuits/generated/div.bad @@ -0,0 +1,3 @@ +secret,x,4 +secret,y,10 +public,z,42 diff --git a/internal/generators/testcircuits/generated/div.good b/internal/generators/testcircuits/generated/div.good new file mode 100644 index 000000000..8985a144a --- /dev/null +++ b/internal/generators/testcircuits/generated/div.good @@ -0,0 +1,3 @@ +secret,x,6 +secret,y,12 +public,z,3 diff --git a/internal/generators/testcircuits/generated/frombinary.good b/internal/generators/testcircuits/generated/frombinary.good index 82a09d13b..af7b1dbd0 100644 --- a/internal/generators/testcircuits/generated/frombinary.good +++ b/internal/generators/testcircuits/generated/frombinary.good @@ -1,5 +1,5 @@ +public,y,13 secret,b0,1 secret,b1,0 secret,b2,1 secret,b3,1 -public,y,13 diff --git a/internal/generators/testcircuits/generated/lut00.bad b/internal/generators/testcircuits/generated/lut00.bad index 3d92b469a..d817306f7 100644 --- a/internal/generators/testcircuits/generated/lut00.bad +++ b/internal/generators/testcircuits/generated/lut00.bad @@ -1,3 +1,3 @@ +public,z,11 secret,b0,0 secret,b1,0 -public,z,11 diff --git a/internal/generators/testcircuits/generated/lut00.good b/internal/generators/testcircuits/generated/lut00.good index eb9b9ecb9..5d6c9f18b 100644 --- a/internal/generators/testcircuits/generated/lut00.good +++ b/internal/generators/testcircuits/generated/lut00.good @@ -1,3 +1,3 @@ +secret,b1,0 public,z,10 secret,b0,0 -secret,b1,0 diff --git a/internal/generators/testcircuits/generated/lut01.bad b/internal/generators/testcircuits/generated/lut01.bad index 1e599e686..ffe4cdf59 100644 --- a/internal/generators/testcircuits/generated/lut01.bad +++ b/internal/generators/testcircuits/generated/lut01.bad @@ -1,3 +1,3 @@ +public,z,10 secret,b0,1 secret,b1,0 -public,z,10 diff --git a/internal/generators/testcircuits/generated/lut10.bad b/internal/generators/testcircuits/generated/lut10.bad index 7d7d60cfa..f60f713a7 100644 --- a/internal/generators/testcircuits/generated/lut10.bad +++ b/internal/generators/testcircuits/generated/lut10.bad @@ -1,3 +1,3 @@ +secret,b0,0 secret,b1,1 public,z,11 -secret,b0,0 diff --git a/internal/generators/testcircuits/generated/lut10.good b/internal/generators/testcircuits/generated/lut10.good index 6beacec52..45f112857 100644 --- a/internal/generators/testcircuits/generated/lut10.good +++ b/internal/generators/testcircuits/generated/lut10.good @@ -1,3 +1,3 @@ +public,z,22 secret,b0,0 secret,b1,1 -public,z,22 diff --git a/internal/generators/testcircuits/generated/xor00.good b/internal/generators/testcircuits/generated/xor00.good index 33c22b9f2..5bcebfd53 100644 --- a/internal/generators/testcircuits/generated/xor00.good +++ b/internal/generators/testcircuits/generated/xor00.good @@ -1,3 +1,3 @@ -secret,b0,0 secret,b1,0 public,y0,0 +secret,b0,0 diff --git a/internal/generators/testcircuits/generated/xor01.bad b/internal/generators/testcircuits/generated/xor01.bad index 3e84eac5e..00ffe58e0 100644 --- a/internal/generators/testcircuits/generated/xor01.bad +++ b/internal/generators/testcircuits/generated/xor01.bad @@ -1,3 +1,3 @@ -public,y0,0 secret,b0,0 secret,b1,1 +public,y0,0 diff --git a/internal/generators/testcircuits/generated/xor10.bad b/internal/generators/testcircuits/generated/xor10.bad index 1c093ae9b..b52da57fc 100644 --- a/internal/generators/testcircuits/generated/xor10.bad +++ b/internal/generators/testcircuits/generated/xor10.bad @@ -1,3 +1,3 @@ -secret,b0,1 secret,b1,0 public,y0,0 +secret,b0,1 diff --git a/internal/generators/testcircuits/generated/xor10.good b/internal/generators/testcircuits/generated/xor10.good index f5a6477de..ea7f83b60 100644 --- a/internal/generators/testcircuits/generated/xor10.good +++ b/internal/generators/testcircuits/generated/xor10.good @@ -1,3 +1,3 @@ -public,y0,1 secret,b0,1 secret,b1,0 +public,y0,1 diff --git a/internal/generators/testcircuits/generated/xor11.bad b/internal/generators/testcircuits/generated/xor11.bad index 416c63093..999315ded 100644 --- a/internal/generators/testcircuits/generated/xor11.bad +++ b/internal/generators/testcircuits/generated/xor11.bad @@ -1,3 +1,3 @@ -secret,b1,1 public,y0,1 secret,b0,1 +secret,b1,1 From 0dc462c97b9751f1ed3580967635ecbb0f9a7998 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Tue, 7 Apr 2020 00:00:54 +0200 Subject: [PATCH 07/19] wip, fixed generation generators for utils.go, gadget needs reorg (context obj), Div needs to be tweaked to work --- backend/bls377/groth16/utils.go | 47 +++++- backend/bls381/groth16/groth16_test.go | 85 ----------- backend/bls381/groth16/utils.go | 134 ++++++++++++++++++ backend/bn256/groth16/groth16_test.go | 10 +- backend/bn256/groth16/utils.go | 21 ++- .../backend/template/generator/generator.go | 16 --- .../backend/template/import_curve.go | 18 ++- .../template/zkpschemes/groth16_utils.go | 3 +- .../testcircuits/generated/constant_ops.bad | 2 - .../testcircuits/generated/constant_ops.good | 2 - .../generators/testcircuits/generated/div.bad | 3 - .../testcircuits/generated/div.good | 3 - .../testcircuits/generated/expo.bad | 3 - .../testcircuits/generated/expo.good | 3 - .../testcircuits/generated/frombinary.bad | 5 - .../testcircuits/generated/frombinary.good | 5 - .../testcircuits/generated/lut00.bad | 3 - .../testcircuits/generated/lut00.good | 3 - .../testcircuits/generated/lut01.bad | 3 - .../testcircuits/generated/lut01.good | 3 - .../testcircuits/generated/lut10.bad | 3 - .../testcircuits/generated/lut10.good | 3 - .../testcircuits/generated/lut11.bad | 3 - .../testcircuits/generated/lut11.good | 3 - .../testcircuits/generated/range.bad | 2 - .../testcircuits/generated/range.good | 2 - .../generated/reference_small.bad | 2 - .../generated/reference_small.good | 2 - .../testcircuits/generated/xor00.bad | 3 - .../testcircuits/generated/xor00.good | 3 - .../testcircuits/generated/xor01.bad | 3 - .../testcircuits/generated/xor01.good | 3 - .../testcircuits/generated/xor10.bad | 3 - .../testcircuits/generated/xor10.good | 3 - .../testcircuits/generated/xor11.bad | 3 - .../testcircuits/generated/xor11.good | 3 - 36 files changed, 219 insertions(+), 197 deletions(-) create mode 100644 backend/bls381/groth16/utils.go delete mode 100644 internal/generators/testcircuits/generated/constant_ops.bad delete mode 100644 internal/generators/testcircuits/generated/constant_ops.good delete mode 100644 internal/generators/testcircuits/generated/div.bad delete mode 100644 internal/generators/testcircuits/generated/div.good delete mode 100644 internal/generators/testcircuits/generated/expo.bad delete mode 100644 internal/generators/testcircuits/generated/expo.good delete mode 100644 internal/generators/testcircuits/generated/frombinary.bad delete mode 100644 internal/generators/testcircuits/generated/frombinary.good delete mode 100644 internal/generators/testcircuits/generated/lut00.bad delete mode 100644 internal/generators/testcircuits/generated/lut00.good delete mode 100644 internal/generators/testcircuits/generated/lut01.bad delete mode 100644 internal/generators/testcircuits/generated/lut01.good delete mode 100644 internal/generators/testcircuits/generated/lut10.bad delete mode 100644 internal/generators/testcircuits/generated/lut10.good delete mode 100644 internal/generators/testcircuits/generated/lut11.bad delete mode 100644 internal/generators/testcircuits/generated/lut11.good delete mode 100644 internal/generators/testcircuits/generated/range.bad delete mode 100644 internal/generators/testcircuits/generated/range.good delete mode 100644 internal/generators/testcircuits/generated/reference_small.bad delete mode 100644 internal/generators/testcircuits/generated/reference_small.good delete mode 100644 internal/generators/testcircuits/generated/xor00.bad delete mode 100644 internal/generators/testcircuits/generated/xor00.good delete mode 100644 internal/generators/testcircuits/generated/xor01.bad delete mode 100644 internal/generators/testcircuits/generated/xor01.good delete mode 100644 internal/generators/testcircuits/generated/xor10.bad delete mode 100644 internal/generators/testcircuits/generated/xor10.good delete mode 100644 internal/generators/testcircuits/generated/xor11.bad delete mode 100644 internal/generators/testcircuits/generated/xor11.good diff --git a/backend/bls377/groth16/utils.go b/backend/bls377/groth16/utils.go index 6250153fa..42f4eb52a 100644 --- a/backend/bls377/groth16/utils.go +++ b/backend/bls377/groth16/utils.go @@ -1,3 +1,19 @@ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/internal/generators DO NOT EDIT + package groth16 import ( @@ -5,7 +21,11 @@ import ( "testing" "github.com/consensys/gnark/backend" + backend_bls377 "github.com/consensys/gnark/backend/bls377" + + "github.com/consensys/gurvy/bls377/fr" + "github.com/stretchr/testify/require" ) @@ -41,14 +61,14 @@ func (assert *Assert) NotSolved(r1cs *backend_bls377.R1CS, solution backend.Assi // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c // it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { +func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { // setup var pk ProvingKey var vk VerifyingKey Setup(r1cs, &pk, &vk) - // ensure random sampling; calliung setup twice should produce != pk and vk + // ensure random sampling; calling setup twice should produce != pk and vk { var pk2 ProvingKey var vk2 VerifyingKey @@ -71,6 +91,29 @@ func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignm } } + // ensure expected Values are computed correctly + { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_bls377.NewDomain(root, backend_bls377.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test ("+k+") is not tagged") + assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + + } + + } + // prover proof, err := Prove(r1cs, &pk, solution) assert.Nil(err, "proving with good solution should not output an error") diff --git a/backend/bls381/groth16/groth16_test.go b/backend/bls381/groth16/groth16_test.go index 99e499989..52a8e657a 100644 --- a/backend/bls381/groth16/groth16_test.go +++ b/backend/bls381/groth16/groth16_test.go @@ -31,10 +31,6 @@ import ( "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/encoding/gob" "github.com/consensys/gurvy" - - "reflect" - - "github.com/stretchr/testify/require" ) func TestCircuits(t *testing.T) { @@ -191,84 +187,3 @@ func BenchmarkVerifier(b *testing.B) { } }) } - -// assert helpers - -// Assert is a helper to test circuits -// it embeds a frontend.Assert object (see gnark/cs/assert) -type Assert struct { - *require.Assertions -} - -// NewAssert returns an Assert helper -func NewAssert(t *testing.T) *Assert { - return &Assert{require.New(t)} -} - -// NotSolved check that a solution does NOT solve a circuit -// error may be missing inputs or unsatisfied constraints -// it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true -func (assert *Assert) NotSolved(r1cs *backend_bls381.R1CS, solution backend.Assignments) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // prover - _, err := Prove(r1cs, &pk, solution) - assert.Error(err, "proving with bad solution should output an error") -} - -// Solved check that a solution solves a circuit -// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. -// this helper also ensure the result vectors a*b=c -// it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend_bls381.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { - // setup - - var pk ProvingKey - var vk VerifyingKey - Setup(r1cs, &pk, &vk) - - // ensure random sampling; calliung setup twice should produce != pk and vk - { - var pk2 ProvingKey - var vk2 VerifyingKey - Setup(r1cs, &pk2, &vk2) - - assert.False(pk.G1.Alpha.Equal(&pk2.G1.Alpha), "groth16 setup with same input should produce different outputs (alpha)") - assert.False(pk.G1.Beta.Equal(&pk2.G1.Beta), "groth16 setup with same input should produce different outputs (beta)") - assert.False(pk.G1.Delta.Equal(&pk2.G1.Delta), "groth16 setup with same input should produce different outputs (delta)") - - for i := 0; i < len(pk.G1.K); i++ { - if !pk.G1.K[i].IsInfinity() { - assert.False(pk.G1.K[i].Equal(&pk2.G1.K[i]), "groth16 setup with same input should produce different outputs (pk.K)") - } - } - - for i := 0; i < len(vk.G1.K); i++ { - if !vk.G1.K[i].IsInfinity() { - assert.False(vk.G1.K[i].Equal(&vk2.G1.K[i]), "groth16 setup with same input should produce different outputs (vk.K)") - } - } - } - - // prover - proof, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - - // ensure random sampling; calling prove twice with same input should produce different proof - { - proof2, err := Prove(r1cs, &pk, solution) - assert.Nil(err, "proving with good solution should not output an error") - assert.False(reflect.DeepEqual(proof, proof2), "calling prove twice with same input should produce different proof") - } - - // verifier - { - isValid, err := Verify(proof, &vk, solution.DiscardSecrets()) - assert.Nil(err, "verifying proof with good solution should not output an error") - assert.True(isValid, "unexpected Verify(proof) result") - } -} diff --git a/backend/bls381/groth16/utils.go b/backend/bls381/groth16/utils.go new file mode 100644 index 000000000..88d726121 --- /dev/null +++ b/backend/bls381/groth16/utils.go @@ -0,0 +1,134 @@ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/internal/generators DO NOT EDIT + +package groth16 + +import ( + "reflect" + "testing" + + "github.com/consensys/gnark/backend" + + backend_bls381 "github.com/consensys/gnark/backend/bls381" + + "github.com/consensys/gurvy/bls381/fr" + + "github.com/stretchr/testify/require" +) + +// assert helpers + +// Assert is a helper to test circuits +// it embeds a frontend.Assert object (see gnark/cs/assert) +type Assert struct { + *require.Assertions +} + +// NewAssert returns an Assert helper +func NewAssert(t *testing.T) *Assert { + return &Assert{require.New(t)} +} + +// NotSolved check that a solution does NOT solve a circuit +// error may be missing inputs or unsatisfied constraints +// it runs frontend.Assert.NotSolved and ensure running groth16.Prove and groth16.Verify doesn't return true +func (assert *Assert) NotSolved(r1cs *backend_bls381.R1CS, solution backend.Assignments) { + // setup + + var pk ProvingKey + var vk VerifyingKey + Setup(r1cs, &pk, &vk) + + // prover + _, err := Prove(r1cs, &pk, solution) + assert.Error(err, "proving with bad solution should output an error") +} + +// Solved check that a solution solves a circuit +// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. +// this helper also ensure the result vectors a*b=c +// it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true +func (assert *Assert) Solved(r1cs *backend_bls381.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + // setup + + var pk ProvingKey + var vk VerifyingKey + Setup(r1cs, &pk, &vk) + + // ensure random sampling; calling setup twice should produce != pk and vk + { + var pk2 ProvingKey + var vk2 VerifyingKey + Setup(r1cs, &pk2, &vk2) + + assert.False(pk.G1.Alpha.Equal(&pk2.G1.Alpha), "groth16 setup with same input should produce different outputs (alpha)") + assert.False(pk.G1.Beta.Equal(&pk2.G1.Beta), "groth16 setup with same input should produce different outputs (beta)") + assert.False(pk.G1.Delta.Equal(&pk2.G1.Delta), "groth16 setup with same input should produce different outputs (delta)") + + for i := 0; i < len(pk.G1.K); i++ { + if !pk.G1.K[i].IsInfinity() { + assert.False(pk.G1.K[i].Equal(&pk2.G1.K[i]), "groth16 setup with same input should produce different outputs (pk.K)") + } + } + + for i := 0; i < len(vk.G1.K); i++ { + if !vk.G1.K[i].IsInfinity() { + assert.False(vk.G1.K[i].Equal(&vk2.G1.K[i]), "groth16 setup with same input should produce different outputs (vk.K)") + } + } + } + + // ensure expected Values are computed correctly + { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_bls381.NewDomain(root, backend_bls381.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test ("+k+") is not tagged") + assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + + } + + } + + // prover + proof, err := Prove(r1cs, &pk, solution) + assert.Nil(err, "proving with good solution should not output an error") + + // ensure random sampling; calling prove twice with same input should produce different proof + { + proof2, err := Prove(r1cs, &pk, solution) + assert.Nil(err, "proving with good solution should not output an error") + assert.False(reflect.DeepEqual(proof, proof2), "calling prove twice with same input should produce different proof") + } + + // verifier + { + isValid, err := Verify(proof, &vk, solution.DiscardSecrets()) + assert.Nil(err, "verifying proof with good solution should not output an error") + assert.True(isValid, "unexpected Verify(proof) result") + } +} diff --git a/backend/bn256/groth16/groth16_test.go b/backend/bn256/groth16/groth16_test.go index cb413a993..19ade47cf 100644 --- a/backend/bn256/groth16/groth16_test.go +++ b/backend/bn256/groth16/groth16_test.go @@ -35,13 +35,11 @@ import ( func TestCircuits(t *testing.T) { assert := NewAssert(t) - // matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") + matches, err := filepath.Glob("../../../internal/generators/testcircuits/generated/*.r1cs") - // if err != nil { - // t.Fatal(err) - // } - - matches := []string{"../../../internal/generators/testcircuits/generated/reference_small.r1cs"} + if err != nil { + t.Fatal(err) + } if len(matches) == 0 { t.Fatal("couldn't find test circuits for", curve.ID.String()) diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go index 20d403c4d..7767035ed 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/utils.go @@ -1,3 +1,19 @@ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/internal/generators DO NOT EDIT + package groth16 import ( @@ -5,8 +21,11 @@ import ( "testing" "github.com/consensys/gnark/backend" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + "github.com/consensys/gurvy/bn256/fr" + "github.com/stretchr/testify/require" ) @@ -49,7 +68,7 @@ func (assert *Assert) Solved(r1cs *backend_bn256.R1CS, solution backend.Assignme var vk VerifyingKey Setup(r1cs, &pk, &vk) - // ensure random sampling; calliung setup twice should produce != pk and vk + // ensure random sampling; calling setup twice should produce != pk and vk { var pk2 ProvingKey var vk2 VerifyingKey diff --git a/internal/generators/backend/template/generator/generator.go b/internal/generators/backend/template/generator/generator.go index 0a5ebcd09..aac61464a 100644 --- a/internal/generators/backend/template/generator/generator.go +++ b/internal/generators/backend/template/generator/generator.go @@ -102,27 +102,11 @@ func GenerateGroth16(d GenerateData) error { } } - if d.Curve == "GENERIC" { - // export assert only in GENERIC case - src := []string{ - templates.ImportCurve, - zkpschemes.Groth16Assert, - } - if err := bavard.Generate(d.RootPath+"groth16/assert.go", src, d, - bavard.Package("groth16"), - bavard.Apache2("ConsenSys AG", 2020), - bavard.GeneratedBy("gnark/internal/generators"), - ); err != nil { - return err - } - } - { // tests src := []string{ templates.ImportCurve, zkpschemes.Groth16Tests, - zkpschemes.Groth16Assert, } if err := bavard.Generate(d.RootPath+"groth16/groth16_test.go", src, d, bavard.Package("groth16"), diff --git a/internal/generators/backend/template/import_curve.go b/internal/generators/backend/template/import_curve.go index f0da28352..69f1a6db0 100644 --- a/internal/generators/backend/template/import_curve.go +++ b/internal/generators/backend/template/import_curve.go @@ -1,11 +1,21 @@ package template const ImportCurve = ` + +{{ define "import_fr" }} + +{{ if eq .Curve "BLS377"}} + "github.com/consensys/gurvy/bls377/fr" +{{ else if eq .Curve "BLS381"}} + "github.com/consensys/gurvy/bls381/fr" +{{ else if eq .Curve "BN256"}} + "github.com/consensys/gurvy/bn256/fr" +{{end}} + +{{end}} + {{ define "import_curve" }} -{{if eq .Curve "GENERIC"}} - "github.com/consensys/gnark/curve" - "github.com/consensys/gnark/curve/fr" -{{else if eq .Curve "BLS377"}} +{{if eq .Curve "BLS377"}} curve "github.com/consensys/gurvy/bls377" "github.com/consensys/gurvy/bls377/fr" {{else if eq .Curve "BLS381"}} diff --git a/internal/generators/backend/template/zkpschemes/groth16_utils.go b/internal/generators/backend/template/zkpschemes/groth16_utils.go index 4d914044f..4ea2713ad 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_utils.go +++ b/internal/generators/backend/template/zkpschemes/groth16_utils.go @@ -7,6 +7,7 @@ import ( "github.com/consensys/gnark/backend" {{ template "import_backend" . }} + {{ template "import_fr" . }} "github.com/stretchr/testify/require" ) @@ -42,7 +43,7 @@ func (assert *Assert) NotSolved(r1cs *backend_{{toLower .Curve}}.R1CS, solution // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c // it runs frontend.Assert.Solved and ensure running groth16.Prove and groth16.Verify returns true -func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]interface{}) { +func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { // setup var pk ProvingKey diff --git a/internal/generators/testcircuits/generated/constant_ops.bad b/internal/generators/testcircuits/generated/constant_ops.bad deleted file mode 100644 index 5ec9c61ae..000000000 --- a/internal/generators/testcircuits/generated/constant_ops.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,12 -public,y,228 diff --git a/internal/generators/testcircuits/generated/constant_ops.good b/internal/generators/testcircuits/generated/constant_ops.good deleted file mode 100644 index a1947f564..000000000 --- a/internal/generators/testcircuits/generated/constant_ops.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,12 -public,y,230 diff --git a/internal/generators/testcircuits/generated/div.bad b/internal/generators/testcircuits/generated/div.bad deleted file mode 100644 index b627c6706..000000000 --- a/internal/generators/testcircuits/generated/div.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,4 -secret,y,10 -public,z,42 diff --git a/internal/generators/testcircuits/generated/div.good b/internal/generators/testcircuits/generated/div.good deleted file mode 100644 index 8985a144a..000000000 --- a/internal/generators/testcircuits/generated/div.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,6 -secret,y,12 -public,z,3 diff --git a/internal/generators/testcircuits/generated/expo.bad b/internal/generators/testcircuits/generated/expo.bad deleted file mode 100644 index cb8e244d8..000000000 --- a/internal/generators/testcircuits/generated/expo.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,2 -secret,e,12 -public,y,4095 diff --git a/internal/generators/testcircuits/generated/expo.good b/internal/generators/testcircuits/generated/expo.good deleted file mode 100644 index c8e9a0d5d..000000000 --- a/internal/generators/testcircuits/generated/expo.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,x,2 -secret,e,12 -public,y,4096 diff --git a/internal/generators/testcircuits/generated/frombinary.bad b/internal/generators/testcircuits/generated/frombinary.bad deleted file mode 100644 index e4fbe1fd1..000000000 --- a/internal/generators/testcircuits/generated/frombinary.bad +++ /dev/null @@ -1,5 +0,0 @@ -secret,b0,1 -secret,b1,0 -secret,b2,1 -secret,b3,1 -public,y,12 diff --git a/internal/generators/testcircuits/generated/frombinary.good b/internal/generators/testcircuits/generated/frombinary.good deleted file mode 100644 index af7b1dbd0..000000000 --- a/internal/generators/testcircuits/generated/frombinary.good +++ /dev/null @@ -1,5 +0,0 @@ -public,y,13 -secret,b0,1 -secret,b1,0 -secret,b2,1 -secret,b3,1 diff --git a/internal/generators/testcircuits/generated/lut00.bad b/internal/generators/testcircuits/generated/lut00.bad deleted file mode 100644 index d817306f7..000000000 --- a/internal/generators/testcircuits/generated/lut00.bad +++ /dev/null @@ -1,3 +0,0 @@ -public,z,11 -secret,b0,0 -secret,b1,0 diff --git a/internal/generators/testcircuits/generated/lut00.good b/internal/generators/testcircuits/generated/lut00.good deleted file mode 100644 index 5d6c9f18b..000000000 --- a/internal/generators/testcircuits/generated/lut00.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,0 -public,z,10 -secret,b0,0 diff --git a/internal/generators/testcircuits/generated/lut01.bad b/internal/generators/testcircuits/generated/lut01.bad deleted file mode 100644 index ffe4cdf59..000000000 --- a/internal/generators/testcircuits/generated/lut01.bad +++ /dev/null @@ -1,3 +0,0 @@ -public,z,10 -secret,b0,1 -secret,b1,0 diff --git a/internal/generators/testcircuits/generated/lut01.good b/internal/generators/testcircuits/generated/lut01.good deleted file mode 100644 index 27f2c4032..000000000 --- a/internal/generators/testcircuits/generated/lut01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,z,12 diff --git a/internal/generators/testcircuits/generated/lut10.bad b/internal/generators/testcircuits/generated/lut10.bad deleted file mode 100644 index f60f713a7..000000000 --- a/internal/generators/testcircuits/generated/lut10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,z,11 diff --git a/internal/generators/testcircuits/generated/lut10.good b/internal/generators/testcircuits/generated/lut10.good deleted file mode 100644 index 45f112857..000000000 --- a/internal/generators/testcircuits/generated/lut10.good +++ /dev/null @@ -1,3 +0,0 @@ -public,z,22 -secret,b0,0 -secret,b1,1 diff --git a/internal/generators/testcircuits/generated/lut11.bad b/internal/generators/testcircuits/generated/lut11.bad deleted file mode 100644 index 472428e73..000000000 --- a/internal/generators/testcircuits/generated/lut11.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,z,9 diff --git a/internal/generators/testcircuits/generated/lut11.good b/internal/generators/testcircuits/generated/lut11.good deleted file mode 100644 index 176288c5d..000000000 --- a/internal/generators/testcircuits/generated/lut11.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,z,7 diff --git a/internal/generators/testcircuits/generated/range.bad b/internal/generators/testcircuits/generated/range.bad deleted file mode 100644 index 8be1df154..000000000 --- a/internal/generators/testcircuits/generated/range.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,5 diff --git a/internal/generators/testcircuits/generated/range.good b/internal/generators/testcircuits/generated/range.good deleted file mode 100644 index 96c7c31f9..000000000 --- a/internal/generators/testcircuits/generated/range.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,10 -public,y,4 diff --git a/internal/generators/testcircuits/generated/reference_small.bad b/internal/generators/testcircuits/generated/reference_small.bad deleted file mode 100644 index 21f05d9ed..000000000 --- a/internal/generators/testcircuits/generated/reference_small.bad +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,0 diff --git a/internal/generators/testcircuits/generated/reference_small.good b/internal/generators/testcircuits/generated/reference_small.good deleted file mode 100644 index ab158d7d0..000000000 --- a/internal/generators/testcircuits/generated/reference_small.good +++ /dev/null @@ -1,2 +0,0 @@ -secret,x,2 -public,y,4294967296 diff --git a/internal/generators/testcircuits/generated/xor00.bad b/internal/generators/testcircuits/generated/xor00.bad deleted file mode 100644 index 679ddb760..000000000 --- a/internal/generators/testcircuits/generated/xor00.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,0 -public,y0,1 diff --git a/internal/generators/testcircuits/generated/xor00.good b/internal/generators/testcircuits/generated/xor00.good deleted file mode 100644 index 5bcebfd53..000000000 --- a/internal/generators/testcircuits/generated/xor00.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,0 -public,y0,0 -secret,b0,0 diff --git a/internal/generators/testcircuits/generated/xor01.bad b/internal/generators/testcircuits/generated/xor01.bad deleted file mode 100644 index 00ffe58e0..000000000 --- a/internal/generators/testcircuits/generated/xor01.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,y0,0 diff --git a/internal/generators/testcircuits/generated/xor01.good b/internal/generators/testcircuits/generated/xor01.good deleted file mode 100644 index f902bfbd9..000000000 --- a/internal/generators/testcircuits/generated/xor01.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,0 -secret,b1,1 -public,y0,1 diff --git a/internal/generators/testcircuits/generated/xor10.bad b/internal/generators/testcircuits/generated/xor10.bad deleted file mode 100644 index b52da57fc..000000000 --- a/internal/generators/testcircuits/generated/xor10.bad +++ /dev/null @@ -1,3 +0,0 @@ -secret,b1,0 -public,y0,0 -secret,b0,1 diff --git a/internal/generators/testcircuits/generated/xor10.good b/internal/generators/testcircuits/generated/xor10.good deleted file mode 100644 index ea7f83b60..000000000 --- a/internal/generators/testcircuits/generated/xor10.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,0 -public,y0,1 diff --git a/internal/generators/testcircuits/generated/xor11.bad b/internal/generators/testcircuits/generated/xor11.bad deleted file mode 100644 index 999315ded..000000000 --- a/internal/generators/testcircuits/generated/xor11.bad +++ /dev/null @@ -1,3 +0,0 @@ -public,y0,1 -secret,b0,1 -secret,b1,1 diff --git a/internal/generators/testcircuits/generated/xor11.good b/internal/generators/testcircuits/generated/xor11.good deleted file mode 100644 index 0fa78e768..000000000 --- a/internal/generators/testcircuits/generated/xor11.good +++ /dev/null @@ -1,3 +0,0 @@ -secret,b0,1 -secret,b1,1 -public,y0,0 From 13c8e70b915f19be7b30cc06ffd2ab82ead07fdb Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Tue, 7 Apr 2020 12:15:53 +0200 Subject: [PATCH 08/19] frontend: fixed division-by-constant constraint --- frontend/cs.go | 24 ++++++++++++++++++++++++ frontend/cs_api.go | 20 +++++++------------- 2 files changed, 31 insertions(+), 13 deletions(-) diff --git a/frontend/cs.go b/frontend/cs.go index aad8c1c88..af9269c42 100644 --- a/frontend/cs.go +++ b/frontend/cs.go @@ -111,6 +111,30 @@ func (cs *CS) div(c1, c2 *Constraint) *Constraint { return newConstraint(cs, &expression) } +// divConstantRight c1, c2 -> c1/c2, where the right (c2) is a constant +func (cs *CS) divConstantRight(c1 *Constraint, c2 big.Int) *Constraint { + + expression := quadraticExpression{ + left: linearExpression{term{Wire: cs.Constraints[0].outputWire, Coeff: c2}}, + right: linearExpression{term{Wire: c1.outputWire, Coeff: bigOne()}}, + operation: div, + } + + return newConstraint(cs, &expression) +} + +// divConstantLeft c1, c2 -> c1/c2, where the left (c1) is a constant +func (cs *CS) divConstantLeft(c1 big.Int, c2 *Constraint) *Constraint { + + expression := quadraticExpression{ + left: linearExpression{term{Wire: c2.outputWire, Coeff: bigOne()}}, + right: linearExpression{term{Wire: cs.Constraints[0].outputWire, Coeff: c1}}, + operation: div, + } + + return newConstraint(cs, &expression) +} + // inv (e*c1)**-1 func (cs *CS) inv(c1 *Constraint, e big.Int) *Constraint { expression := &term{ diff --git a/frontend/cs_api.go b/frontend/cs_api.go index c8b5efbbf..4e8b294c6 100644 --- a/frontend/cs_api.go +++ b/frontend/cs_api.go @@ -132,19 +132,13 @@ func (cs *CS) DIV(i1, i2 interface{}) *Constraint { return cs.div(c1, c2) default: tmp := backend.FromInterface(c2) - // TODO unsupported - panic("inverse without modulo, need cs.div ?") - // tmp.Inverse(&tmp) - return cs.mulConstant(c1, tmp) + return cs.divConstantRight(c1, tmp) } default: // i1 is not a Constraint type, so c2 must be switch c2 := _i2.(type) { case *Constraint: - tmp := backend.FromInterface(c2) - // TODO unsupported - panic("inverse without modulo, need cs.div ?") - // tmp.Inverse(&tmp) - return cs.inv(c2, tmp) + tmp := backend.FromInterface(c1) + return cs.divConstantLeft(tmp, c2) default: panic("invalid type") } @@ -336,11 +330,11 @@ func (cs *CS) SELECT(b *Constraint, i1, i2 interface{}) *Constraint { panic("invalid type") } default: - c1Fr := backend.FromInterface(i1) - c2Fr := backend.FromInterface(i2) - c1Fr.Sub(&c1Fr, &c2Fr) // TODO this is not gonna work. + c1Bigint := backend.FromInterface(i1) + c2Bigint := backend.FromInterface(i2) + c1Bigint.Sub(&c1Bigint, &c2Bigint) expression := linearExpression{ - term{Wire: b.outputWire, Coeff: c1Fr, Operation: mul}, + term{Wire: b.outputWire, Coeff: c1Bigint, Operation: mul}, term{Wire: cs.Constraints[0].outputWire, Coeff: bigOne(), Operation: mul}, } return newConstraint(cs, &expression) From 60456e9cf39e6d3ab7425e04ee43e456455c43c1 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Wed, 8 Apr 2020 11:53:18 +0200 Subject: [PATCH 09/19] refactoring gadgets --- backend/bls377/groth16/utils.go | 4 +- backend/bls381/groth16/utils.go | 4 +- backend/bn256/groth16/utils.go | 4 +- .../accumulator/merkle/errors.go | 0 .../accumulator/merkle/proof.go | 2 +- .../accumulator/merkle/proof_test.go | 2 +- .../hash/mimc/bls377/mimc_bls377.go | 0 .../hash/mimc/bls381/mimc_bls381.go | 0 .../hash/mimc/bn256/mimc_bn256.go | 0 .../signature/eddsa/eddsa.go | 4 +- .../signature/eddsa/eddsa_test.go | 4 +- examples/mimc/mimc.go | 5 +- frontend/assert.go | 77 --- frontend/cs_test.go | 438 +++++++++--------- frontend/std/doc.go | 5 - frontend/std/gadget/hash/mimc/mimc_bls377.go | 34 -- frontend/std/gadget/hash/mimc/mimc_bls381.go | 38 -- frontend/std/gadget/hash/mimc/mimc_bn256.go | 38 -- frontend/std/gadget/hash/mimc/mimc_test.go | 62 --- .../accumulator/merkle/proof.go | 10 +- .../accumulator/merkle/proof_test.go | 0 .../edwards_bls381_test.go.backup | 0 .../edwards_bn256_test.go.backup | 0 .../algebra/twisted_edwards/point.go.backup | 134 +++--- gadgets/hash/mimc/encrypt.go | 134 ++++++ gadgets/hash/mimc/errors.go | 7 + .../std/gadget => gadgets}/hash/mimc/mimc.go | 16 +- gadgets/hash/mimc/mimc_test.go | 154 ++++++ .../signature/eddsa/eddsa.go.backup | 1 - .../signature/eddsa/eddsa_test.go.backup | 0 go.mod | 6 +- go.sum | 10 + .../template/zkpschemes/groth16_utils.go | 4 +- 33 files changed, 629 insertions(+), 568 deletions(-) rename {frontend/std/reference => cryptolib}/accumulator/merkle/errors.go (100%) rename {frontend/std/reference => cryptolib}/accumulator/merkle/proof.go (94%) rename {frontend/std/reference => cryptolib}/accumulator/merkle/proof_test.go (95%) rename {frontend/std/reference => cryptolib}/hash/mimc/bls377/mimc_bls377.go (100%) rename {frontend/std/reference => cryptolib}/hash/mimc/bls381/mimc_bls381.go (100%) rename {frontend/std/reference => cryptolib}/hash/mimc/bn256/mimc_bn256.go (100%) rename frontend/std/reference/signature/eddsa/eddsa.go.backup => cryptolib/signature/eddsa/eddsa.go (97%) rename frontend/std/reference/signature/eddsa/eddsa_test.go.backup => cryptolib/signature/eddsa/eddsa_test.go (91%) delete mode 100644 frontend/std/doc.go delete mode 100644 frontend/std/gadget/hash/mimc/mimc_bls377.go delete mode 100644 frontend/std/gadget/hash/mimc/mimc_bls381.go delete mode 100644 frontend/std/gadget/hash/mimc/mimc_bn256.go delete mode 100644 frontend/std/gadget/hash/mimc/mimc_test.go rename {frontend/std/gadget => gadgets}/accumulator/merkle/proof.go (91%) rename {frontend/std/gadget => gadgets}/accumulator/merkle/proof_test.go (100%) rename {frontend/std/gadget => gadgets}/algebra/twisted_edwards/edwards_bls381_test.go.backup (100%) rename {frontend/std/gadget => gadgets}/algebra/twisted_edwards/edwards_bn256_test.go.backup (100%) rename {frontend/std/gadget => gadgets}/algebra/twisted_edwards/point.go.backup (76%) create mode 100644 gadgets/hash/mimc/encrypt.go create mode 100644 gadgets/hash/mimc/errors.go rename {frontend/std/gadget => gadgets}/hash/mimc/mimc.go (78%) create mode 100644 gadgets/hash/mimc/mimc_test.go rename {frontend/std/gadget => gadgets}/signature/eddsa/eddsa.go.backup (96%) rename {frontend/std/gadget => gadgets}/signature/eddsa/eddsa_test.go.backup (100%) diff --git a/backend/bls377/groth16/utils.go b/backend/bls377/groth16/utils.go index 42f4eb52a..c17412f1c 100644 --- a/backend/bls377/groth16/utils.go +++ b/backend/bls377/groth16/utils.go @@ -107,8 +107,8 @@ func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignm for k, v := range expectedValues { val, ok := res[k] - assert.True(ok, "Variable to test ("+k+") is not tagged") - assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + assert.True(ok, "Variable to test <"+k+"> (bls377) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (bls377) does not have the expected value") } diff --git a/backend/bls381/groth16/utils.go b/backend/bls381/groth16/utils.go index 88d726121..bbcb3febc 100644 --- a/backend/bls381/groth16/utils.go +++ b/backend/bls381/groth16/utils.go @@ -107,8 +107,8 @@ func (assert *Assert) Solved(r1cs *backend_bls381.R1CS, solution backend.Assignm for k, v := range expectedValues { val, ok := res[k] - assert.True(ok, "Variable to test ("+k+") is not tagged") - assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + assert.True(ok, "Variable to test <"+k+"> (bls381) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (bls381) does not have the expected value") } diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go index 7767035ed..6be016ca7 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/utils.go @@ -107,8 +107,8 @@ func (assert *Assert) Solved(r1cs *backend_bn256.R1CS, solution backend.Assignme for k, v := range expectedValues { val, ok := res[k] - assert.True(ok, "Variable to test ("+k+") is not tagged") - assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + assert.True(ok, "Variable to test <"+k+"> (bn256) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (bn256) does not have the expected value") } diff --git a/frontend/std/reference/accumulator/merkle/errors.go b/cryptolib/accumulator/merkle/errors.go similarity index 100% rename from frontend/std/reference/accumulator/merkle/errors.go rename to cryptolib/accumulator/merkle/errors.go diff --git a/frontend/std/reference/accumulator/merkle/proof.go b/cryptolib/accumulator/merkle/proof.go similarity index 94% rename from frontend/std/reference/accumulator/merkle/proof.go rename to cryptolib/accumulator/merkle/proof.go index 8e3ae7279..b351d3878 100644 --- a/frontend/std/reference/accumulator/merkle/proof.go +++ b/cryptolib/accumulator/merkle/proof.go @@ -1,7 +1,7 @@ package merkle import ( - "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" "github.com/consensys/gurvy/bn256/fr" ) diff --git a/frontend/std/reference/accumulator/merkle/proof_test.go b/cryptolib/accumulator/merkle/proof_test.go similarity index 95% rename from frontend/std/reference/accumulator/merkle/proof_test.go rename to cryptolib/accumulator/merkle/proof_test.go index ff1d9a17a..fd4382355 100644 --- a/frontend/std/reference/accumulator/merkle/proof_test.go +++ b/cryptolib/accumulator/merkle/proof_test.go @@ -3,7 +3,7 @@ package merkle import ( "testing" - "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" "github.com/consensys/gurvy/bn256/fr" ) diff --git a/frontend/std/reference/hash/mimc/bls377/mimc_bls377.go b/cryptolib/hash/mimc/bls377/mimc_bls377.go similarity index 100% rename from frontend/std/reference/hash/mimc/bls377/mimc_bls377.go rename to cryptolib/hash/mimc/bls377/mimc_bls377.go diff --git a/frontend/std/reference/hash/mimc/bls381/mimc_bls381.go b/cryptolib/hash/mimc/bls381/mimc_bls381.go similarity index 100% rename from frontend/std/reference/hash/mimc/bls381/mimc_bls381.go rename to cryptolib/hash/mimc/bls381/mimc_bls381.go diff --git a/frontend/std/reference/hash/mimc/bn256/mimc_bn256.go b/cryptolib/hash/mimc/bn256/mimc_bn256.go similarity index 100% rename from frontend/std/reference/hash/mimc/bn256/mimc_bn256.go rename to cryptolib/hash/mimc/bn256/mimc_bn256.go diff --git a/frontend/std/reference/signature/eddsa/eddsa.go.backup b/cryptolib/signature/eddsa/eddsa.go similarity index 97% rename from frontend/std/reference/signature/eddsa/eddsa.go.backup rename to cryptolib/signature/eddsa/eddsa.go index 7556b6ebb..bcd0fb98d 100644 --- a/frontend/std/reference/signature/eddsa/eddsa.go.backup +++ b/cryptolib/signature/eddsa/eddsa.go @@ -22,9 +22,9 @@ import ( "errors" "math/big" - "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" "github.com/consensys/gurvy/bn256/fr" - twistededwards "github.com/consensys/gurvy/bn256/twisted_edwards" + "github.com/consensys/gurvy/bn256/twistededwards" "golang.org/x/crypto/blake2b" ) diff --git a/frontend/std/reference/signature/eddsa/eddsa_test.go.backup b/cryptolib/signature/eddsa/eddsa_test.go similarity index 91% rename from frontend/std/reference/signature/eddsa/eddsa_test.go.backup rename to cryptolib/signature/eddsa/eddsa_test.go index bfc85e6c3..b30a331c5 100644 --- a/frontend/std/reference/signature/eddsa/eddsa_test.go.backup +++ b/cryptolib/signature/eddsa/eddsa_test.go @@ -21,8 +21,8 @@ package eddsa import ( "testing" - "github.com/consensys/gnark/curve/fr" - twistededwards "github.com/consensys/gnark/frontend/std/reference/algebra/twisted_edwards" + "github.com/consensys/gurvy/bn256/fr" + "github.com/consensys/gurvy/bn256/twistededwards" ) func TestEddsa(t *testing.T) { diff --git a/examples/mimc/mimc.go b/examples/mimc/mimc.go index 3860d1a99..83394fcba 100644 --- a/examples/mimc/mimc.go +++ b/examples/mimc/mimc.go @@ -3,7 +3,8 @@ package main import ( backend_bn256 "github.com/consensys/gnark/backend/bn256" "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/frontend/std/gadget/hash/mimc" + "github.com/consensys/gnark/gadgets/hash/mimc" + "github.com/consensys/gurvy" ) func main() { @@ -22,7 +23,7 @@ func New() *backend_bn256.R1CS { hash := circuit.PUBLIC_INPUT("h") // hash function - mimc := mimc.NewMiMC("seed") + mimc, _ := mimc.NewMiMC("seed", gurvy.BN256) // specify constraints // mimc(preImage) == hash diff --git a/frontend/assert.go b/frontend/assert.go index b1608341a..5eb6928cc 100644 --- a/frontend/assert.go +++ b/frontend/assert.go @@ -19,7 +19,6 @@ package frontend import ( "testing" - "github.com/consensys/gnark/backend" "github.com/stretchr/testify/require" ) @@ -35,82 +34,6 @@ func NewAssert(t *testing.T) *Assert { return &Assert{t, require.New(t)} } -// NotSolved check that a solution does NOT solve a circuit -// error may be missing inputs or unsatisfied constraints -func (assert *Assert) NotSolved(circuit CS, solution backend.Assignments) { - // sanity check that no assignement return an error if we need inputs - assert.errInputNotSet(circuit) - - // { - // r := circuit.ToR1CS() - - // // solving with missing assignments should return a ErrInputNotSet - // nbInputs := r.NbPrivateWires + r.NbPublicWires - 1 - // if len(solution) < nbInputs { - // wireValues := make([]fr.Element, r.NbWires) - // a := make([]fr.Element, r.NbConstraints) - // b := make([]fr.Element, r.NbConstraints) - // c := make([]fr.Element, r.NbConstraints) - // err := r.Solve(solution, a, b, c, wireValues) - // assert.Error(err, "solving R1CS with bad solution should return an error") - // assert.True(errors.Is(err, backend.ErrInputNotSet), "expected ErrInputNotSet, got %v", err) - // return - // } - - // if len(r.Constraints) == 0 { - // assert.t.Log("circuit has no constraints, any input will solve it") - // return - // } - // } - - // { - // r := circuit.ToR1CS() - // wireValues := make([]fr.Element, r.NbWires) - // a := make([]fr.Element, r.NbConstraints) - // b := make([]fr.Element, r.NbConstraints) - // c := make([]fr.Element, r.NbConstraints) - // err := r.Solve(solution, a, b, c, wireValues) - // assert.Error(err, "solving R1CS with bad solution should return an error") - // assert.True(errors.Is(err, backend.ErrUnsatisfiedConstraint) || errors.Is(err, backend.ErrInputVisiblity), "expected ErrUnsatisfiedConstraint or ErrInputVisiblity") - // } -} - -// Solved check that a solution solves a circuit -// for each expectedValues, this helper compares the output from backend.Inspect() after Solving. -// this helper also ensure the result vectors a*b=c -func (assert *Assert) Solved(circuit CS, solution backend.Assignments, expectedValues map[string]interface{}) { - // sanity check that no assignement return an error if we need inputs - assert.errInputNotSet(circuit) - - // { - // r1cs := circuit.ToR1CS() - // wireValues := make([]fr.Element, r1cs.NbWires) - // a := make([]fr.Element, r1cs.NbConstraints) - // b := make([]fr.Element, r1cs.NbConstraints) - // c := make([]fr.Element, r1cs.NbConstraints) - // err := r1cs.Solve(solution, a, b, c, wireValues) - // assert.Nil(err, "solving R1CS with good solution shouldn't return an error") - // assert.Equal(len(a), len(b), "R1CS solution a,b and c vectors should be the same size") - // assert.Equal(len(b), len(c), "R1CS solution a,b and c vectors should be the same size") - - // var tmp fr.Element - // for i := 0; i < len(a); i++ { - // assert.True(tmp.Mul(&a[i], &b[i]).Equal(&c[i]), "R1CS solution should be valid a * b = c rank 1 constriant") - // } - - // values, err := r1cs.Inspect(wireValues) - // assert.Nil(err, "inspecting values from R1CS after solving shouldn't return an error") - - // for k, i := range expectedValues { - // got, ok := values[k] - // assert.True(ok, "expectedValues must be found in returned values from r1Inspect()") - // v := fr.FromInterface(i) - // assert.True(v.Equal(&got), "at tag "+k+" expected "+v.String()+" got "+got.String()) - // } - - // } -} - // ------------------------------------------------------------------------------------------------- // internal diff --git a/frontend/cs_test.go b/frontend/cs_test.go index aaf51cc0b..93efb5e74 100644 --- a/frontend/cs_test.go +++ b/frontend/cs_test.go @@ -146,21 +146,21 @@ func TestADD(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // good solution - good.Assign(backend.Public, "x", 42) + // // good solution + // good.Assign(backend.Public, "x", 42) - // expected values - expectedValues["x"] = 42 - expectedValues["x+x"] = 42 + 42 - expectedValues["x+4"] = 42 + 4 - expectedValues["4+x"] = 4 + 42 + // // expected values + // expectedValues["x"] = 42 + // expectedValues["x+x"] = 42 + 42 + // expectedValues["x+4"] = 42 + 4 + // expectedValues["4+x"] = 4 + 42 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestSUB(t *testing.T) { @@ -196,23 +196,23 @@ func TestSUB(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // good solution - good.Assign(backend.Public, "x", 42) + // // good solution + // good.Assign(backend.Public, "x", 42) - // expected values - expectedValues["x"] = 42 - expectedValues["x-x"] = 0 - expectedValues["x-4"] = 42 - 4 - fourMinus42 := backend.FromInterface(42) - fourMinus42.Sub(&val, &fourMinus42) - expectedValues["4-x"] = fourMinus42 - - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // // expected values + // expectedValues["x"] = 42 + // expectedValues["x-x"] = 0 + // expectedValues["x-4"] = 42 - 4 + // fourMinus42 := backend.FromInterface(42) + // fourMinus42.Sub(&val, &fourMinus42) + // expectedValues["4-x"] = fourMinus42 + + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestMUL(t *testing.T) { @@ -248,21 +248,21 @@ func TestMUL(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // good solution - good.Assign(backend.Public, "x", 42) + // // good solution + // good.Assign(backend.Public, "x", 42) - // expected values - expectedValues["x"] = 42 - expectedValues["x^2"] = 42 * 42 - expectedValues["x*4"] = 42 * 4 - expectedValues["4*x"] = 4 * 42 + // // expected values + // expectedValues["x"] = 42 + // expectedValues["x^2"] = 42 * 42 + // expectedValues["x*4"] = 42 * 4 + // expectedValues["4*x"] = 4 * 42 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestDIV(t *testing.T) { @@ -294,23 +294,23 @@ func TestDIV(t *testing.T) { nbPublicWires: 3, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) + + // // good solution + // good.Assign(backend.Public, "x", 42) + // good.Assign(backend.Public, "y", 142) - // good solution - good.Assign(backend.Public, "x", 42) - good.Assign(backend.Public, "y", 142) + // // expected values + // xVal := backend.FromInterface(42) + // xDiv := backend.FromInterface(142) + // xDiv.Div(&xVal, &xDiv) + // expectedValues["x"] = xVal + // expectedValues["x/y"] = xDiv - // expected values - xVal := backend.FromInterface(42) - xDiv := backend.FromInterface(142) - xDiv.Div(&xVal, &xDiv) - expectedValues["x"] = xVal - expectedValues["x/y"] = xDiv - - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestDIVLC(t *testing.T) { @@ -347,21 +347,21 @@ func TestDIVLC(t *testing.T) { nbPublicWires: 3, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // good solution - good.Assign(backend.Public, "x", 8000) - good.Assign(backend.Public, "y", 80) + // // good solution + // good.Assign(backend.Public, "x", 8000) + // good.Assign(backend.Public, "y", 80) - // expected values - expectedValues["x"] = 8000 - expectedValues["y"] = 80 - expectedValues["res"] = (8000 * 2) / (80 * 2) + // // expected values + // expectedValues["x"] = 8000 + // expectedValues["y"] = 80 + // expectedValues["res"] = (8000 * 2) / (80 * 2) - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestMULLC(t *testing.T) { @@ -398,21 +398,21 @@ func TestMULLC(t *testing.T) { nbPublicWires: 3, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // good solution - good.Assign(backend.Public, "x", 8000) - good.Assign(backend.Public, "y", 80) + // // good solution + // good.Assign(backend.Public, "x", 8000) + // good.Assign(backend.Public, "y", 80) - // expected values - expectedValues["x"] = 8000 - expectedValues["y"] = 80 - expectedValues["res"] = (8000 * 2) * (80 * 2) + // // expected values + // expectedValues["x"] = 8000 + // expectedValues["y"] = 80 + // expectedValues["res"] = (8000 * 2) * (80 * 2) - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestSELECT(t *testing.T) { @@ -445,28 +445,28 @@ func TestSELECT(t *testing.T) { nbPublicWires: 4, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution (x is not a boolean) - bad.Assign(backend.Public, "x", 10) - bad.Assign(backend.Public, "y", 42) - bad.Assign(backend.Public, "z", 8000) + // // bad solution (x is not a boolean) + // bad.Assign(backend.Public, "x", 10) + // bad.Assign(backend.Public, "y", 42) + // bad.Assign(backend.Public, "z", 8000) - // good solution - good.Assign(backend.Public, "x", 0) - good.Assign(backend.Public, "y", 42) - good.Assign(backend.Public, "z", 8000) + // // good solution + // good.Assign(backend.Public, "x", 0) + // good.Assign(backend.Public, "y", 42) + // good.Assign(backend.Public, "z", 8000) - // expected values - expectedValues["x"] = 0 - expectedValues["y"] = 42 - expectedValues["z"] = 8000 - expectedValues["res"] = 8000 + // // expected values + // expectedValues["x"] = 0 + // expectedValues["y"] = 42 + // expectedValues["z"] = 8000 + // expectedValues["res"] = 8000 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestFROM_BINARY(t *testing.T) { @@ -501,35 +501,35 @@ func TestFROM_BINARY(t *testing.T) { nbPublicWires: 6, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution (b0 == 3, not a bit) - bad.Assign(backend.Public, "b0", 3) - bad.Assign(backend.Public, "b1", 0) - bad.Assign(backend.Public, "b2", 1) - bad.Assign(backend.Public, "b3", 1) - bad.Assign(backend.Public, "b4", 0) + // // bad solution (b0 == 3, not a bit) + // bad.Assign(backend.Public, "b0", 3) + // bad.Assign(backend.Public, "b1", 0) + // bad.Assign(backend.Public, "b2", 1) + // bad.Assign(backend.Public, "b3", 1) + // bad.Assign(backend.Public, "b4", 0) - // good solution - good.Assign(backend.Public, "b0", 1) - good.Assign(backend.Public, "b1", 0) - good.Assign(backend.Public, "b2", 1) - good.Assign(backend.Public, "b3", 0) - good.Assign(backend.Public, "b4", 1) + // // good solution + // good.Assign(backend.Public, "b0", 1) + // good.Assign(backend.Public, "b1", 0) + // good.Assign(backend.Public, "b2", 1) + // good.Assign(backend.Public, "b3", 0) + // good.Assign(backend.Public, "b4", 1) - // expected values - expectedValues["b0"] = 1 - expectedValues["b1"] = 0 - expectedValues["b2"] = 1 - expectedValues["b3"] = 0 - expectedValues["b4"] = 1 + // // expected values + // expectedValues["b0"] = 1 + // expectedValues["b1"] = 0 + // expectedValues["b2"] = 1 + // expectedValues["b3"] = 0 + // expectedValues["b4"] = 1 - expectedValues["res"] = 1 + 2*0 + 4*1 + 8*0 + 16*1 + // expectedValues["res"] = 1 + 2*0 + 4*1 + 8*0 + 16*1 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestTO_BINARY(t *testing.T) { @@ -563,26 +563,26 @@ func TestTO_BINARY(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) // bad solution // bad.Assign(backend.Public, "x", 64) // TODO doesn't fit on 5 bits // good solution - good.Assign(backend.Public, "x", 17) + // good.Assign(backend.Public, "x", 17) - // expected values - expectedValues["x"] = 17 - expectedValues["res0"] = 1 - expectedValues["res1"] = 0 - expectedValues["res2"] = 0 - expectedValues["res3"] = 0 - expectedValues["res4"] = 1 - - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // // expected values + // expectedValues["x"] = 17 + // expectedValues["res0"] = 1 + // expectedValues["res1"] = 0 + // expectedValues["res2"] = 0 + // expectedValues["res3"] = 0 + // expectedValues["res4"] = 1 + + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestSELECT_LUT(t *testing.T) { @@ -618,25 +618,25 @@ func TestSELECT_LUT(t *testing.T) { nbPublicWires: 1, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution (non boolean inputs) - bad.Assign(backend.Secret, "b0", 22) - bad.Assign(backend.Secret, "b1", 22) + // // bad solution (non boolean inputs) + // bad.Assign(backend.Secret, "b0", 22) + // bad.Assign(backend.Secret, "b1", 22) - // good solution - good.Assign(backend.Secret, "b0", 1) - good.Assign(backend.Secret, "b1", 0) + // // good solution + // good.Assign(backend.Secret, "b0", 1) + // good.Assign(backend.Secret, "b1", 0) - // expected values - expectedValues["b0"] = 1 - expectedValues["b1"] = 0 - expectedValues["res"] = 8000 + // // expected values + // expectedValues["b0"] = 1 + // expectedValues["b1"] = 0 + // expectedValues["res"] = 8000 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestXOR(t *testing.T) { @@ -675,30 +675,30 @@ func TestXOR(t *testing.T) { nbPublicWires: 4, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution (non boolean inputs) - bad.Assign(backend.Public, "x", 22) - bad.Assign(backend.Public, "y", 22) - bad.Assign(backend.Public, "z", 22) + // // bad solution (non boolean inputs) + // bad.Assign(backend.Public, "x", 22) + // bad.Assign(backend.Public, "y", 22) + // bad.Assign(backend.Public, "z", 22) - // good solution - good.Assign(backend.Public, "x", 1) - good.Assign(backend.Public, "y", 0) - good.Assign(backend.Public, "z", 0) + // // good solution + // good.Assign(backend.Public, "x", 1) + // good.Assign(backend.Public, "y", 0) + // good.Assign(backend.Public, "z", 0) + + // // expected values + // expectedValues["x"] = 1 + // expectedValues["y"] = 0 + // expectedValues["z"] = 0 + // expectedValues["r0"] = 1 + // expectedValues["r1"] = 0 + // expectedValues["r2"] = 0 - // expected values - expectedValues["x"] = 1 - expectedValues["y"] = 0 - expectedValues["z"] = 0 - expectedValues["r0"] = 1 - expectedValues["r1"] = 0 - expectedValues["r2"] = 0 - - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestALLOC(t *testing.T) { // test helper @@ -728,13 +728,13 @@ func TestALLOC(t *testing.T) { }) // bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - expectedValues["x"] = 4 + // expectedValues["x"] = 4 - // assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestMUSTBE_BOOL(t *testing.T) { @@ -767,21 +767,21 @@ func TestMUSTBE_BOOL(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution - bad.Assign(backend.Public, "x", 12) + // // bad solution + // bad.Assign(backend.Public, "x", 12) - // good solution - good.Assign(backend.Public, "x", 1) + // // good solution + // good.Assign(backend.Public, "x", 1) - // expected values - expectedValues["x"] = 1 + // // expected values + // expectedValues["x"] = 1 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestXtimes2EqualsY(t *testing.T) { @@ -815,25 +815,25 @@ func TestXtimes2EqualsY(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution - bad.Assign(backend.Public, "x", 42) - bad.Assign(backend.Secret, "y", 42*42) + // // bad solution + // bad.Assign(backend.Public, "x", 42) + // bad.Assign(backend.Secret, "y", 42*42) - // good solution - good.Assign(backend.Public, "x", 42) - good.Assign(backend.Secret, "y", 42*2) + // // good solution + // good.Assign(backend.Public, "x", 42) + // good.Assign(backend.Secret, "y", 42*2) - // expected values - expectedValues["x"] = 42 - expectedValues["y"] = 42 * 2 - expectedValues["cst"] = 2 + // // expected values + // expectedValues["x"] = 42 + // expectedValues["y"] = 42 * 2 + // expectedValues["cst"] = 2 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } func TestINV(t *testing.T) { @@ -875,7 +875,7 @@ func TestINV(t *testing.T) { // good.Assign(backend.Public, "x", 42) // expected values - t.Skip("TODO INVERSE") + // t.Skip("TODO INVERSE") // TODO inverse // xVal := backend.FromInterface(42) // var xInvVal big.Int @@ -922,7 +922,7 @@ func TestMerge(t *testing.T) { nbPublicWires: 2, }) // TODO missing inverse - t.Skip("missing inverse TODO") + // t.Skip("missing inverse TODO") // bad := backend.NewAssignment() // good := backend.NewAssignment() @@ -989,24 +989,24 @@ func TestMergeMoeNoe(t *testing.T) { nbPublicWires: 2, }) - bad := backend.NewAssignment() - good := backend.NewAssignment() - expectedValues := make(map[string]interface{}) + // bad := backend.NewAssignment() + // good := backend.NewAssignment() + // expectedValues := make(map[string]interface{}) - // bad solution - bad.Assign(backend.Secret, "u", 0) - bad.Assign(backend.Public, "w", 5) + // // bad solution + // bad.Assign(backend.Secret, "u", 0) + // bad.Assign(backend.Public, "w", 5) - // good solution - good.Assign(backend.Secret, "u", 1) - good.Assign(backend.Public, "w", 5) + // // good solution + // good.Assign(backend.Secret, "u", 1) + // good.Assign(backend.Public, "w", 5) - expectedValues["u"] = 1 - expectedValues["w"] = 5 - expectedValues["b0"] = 1 - expectedValues["b1"] = 0 - expectedValues["b2"] = 1 + // expectedValues["u"] = 1 + // expectedValues["w"] = 5 + // expectedValues["b0"] = 1 + // expectedValues["b1"] = 0 + // expectedValues["b2"] = 1 - assert.NotSolved(circuit, bad) - assert.Solved(circuit, good, expectedValues) + // assert.NotSolved(circuit, bad) + // assert.Solved(circuit, good, expectedValues) } diff --git a/frontend/std/doc.go b/frontend/std/doc.go deleted file mode 100644 index ac07d528d..000000000 --- a/frontend/std/doc.go +++ /dev/null @@ -1,5 +0,0 @@ -// Package std contains 2 sub-tree: reference and gadget -// reference is completly independant from gadget -// gadget may use reference data-structures -// not all gadget need a reference implementation, but that's helpful, at least for testing purposes -package std diff --git a/frontend/std/gadget/hash/mimc/mimc_bls377.go b/frontend/std/gadget/hash/mimc/mimc_bls377.go deleted file mode 100644 index dd890747a..000000000 --- a/frontend/std/gadget/hash/mimc/mimc_bls377.go +++ /dev/null @@ -1,34 +0,0 @@ -// +build bls377 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -import "github.com/consensys/gnark/frontend" - -// execution of a mimc run expressed as r1cs -func (h MiMC) encrypt(circuit *frontend.CS, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { - res := message - for i := 0; i < len(h.Params); i++ { - tmp := circuit.ADD(res, h.Params[i], key) - // res = (res+key+c)**-1 - res = circuit.INV(tmp) - } - res = circuit.ADD(res, key) - return res - -} diff --git a/frontend/std/gadget/hash/mimc/mimc_bls381.go b/frontend/std/gadget/hash/mimc/mimc_bls381.go deleted file mode 100644 index 739132b67..000000000 --- a/frontend/std/gadget/hash/mimc/mimc_bls381.go +++ /dev/null @@ -1,38 +0,0 @@ -// +build bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -import "github.com/consensys/gnark/frontend" - -// execution of a mimc run expressed as r1cs -func (h MiMC) encrypt(circuit *frontend.CS, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { - - res := message - - for i := 0; i < len(h.Params); i++ { - tmp := circuit.ADD(res, key, h.Params[i]) - // res = (res+k+c)^5 - res = circuit.MUL(tmp, tmp) // square - res = circuit.MUL(res, res) // square - res = circuit.MUL(res, tmp) // mul - } - res = circuit.ADD(res, key) - return res - -} diff --git a/frontend/std/gadget/hash/mimc/mimc_bn256.go b/frontend/std/gadget/hash/mimc/mimc_bn256.go deleted file mode 100644 index 172bc8277..000000000 --- a/frontend/std/gadget/hash/mimc/mimc_bn256.go +++ /dev/null @@ -1,38 +0,0 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -import "github.com/consensys/gnark/frontend" - -// execution of a mimc run expressed as r1cs -func (h MiMC) encrypt(circuit *frontend.CS, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { - - res := message - - for i := 0; i < len(h.Params); i++ { - //for i := 0; i < 1; i++ { - tmp := circuit.ADD(res, key, h.Params[i]) - // res = (res+k+c)^7 - res = circuit.MUL(tmp, tmp) - res = circuit.MUL(res, tmp) - res = circuit.MUL(res, res) - res = circuit.MUL(res, tmp) - } - res = circuit.ADD(res, key) - return res - -} diff --git a/frontend/std/gadget/hash/mimc/mimc_test.go b/frontend/std/gadget/hash/mimc/mimc_test.go deleted file mode 100644 index 3ce239675..000000000 --- a/frontend/std/gadget/hash/mimc/mimc_test.go +++ /dev/null @@ -1,62 +0,0 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package mimc - -import ( - "testing" - - backend_bn256 "github.com/consensys/gnark/backend/bn256" - - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/backend/bn256/groth16" - "github.com/consensys/gnark/frontend" - mimcgo "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" - "github.com/consensys/gurvy/bn256/fr" -) - -// TODO need tests on MiMC edge cases, bad or un-allocated inputs, and errors -func TestMimc(t *testing.T) { - - assert := groth16.NewAssert(t) - - // input - var data fr.Element - data.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") - - // running MiMC (R1CS) - mimc := NewMiMC("seed") - - // minimal circuit res = hash(data) - s := frontend.New() - result := mimc.Hash(&s, s.PUBLIC_INPUT("data")) - result.Tag("res") - - // running MiMC (Go) - expectedValues := make(map[string]fr.Element) - expectedValues["res"] = mimcgo.NewMiMC("seed").Hash(data) - - // provide inputs to the circuit - inputs := backend.NewAssignment() - inputs.Assign(backend.Public, "data", data) - - // creates r1cs - _r1cs := s.ToR1CS() - r1cs := backend_bn256.New(_r1cs) - - assert.Solved(&r1cs, inputs, expectedValues) - -} diff --git a/frontend/std/gadget/accumulator/merkle/proof.go b/gadgets/accumulator/merkle/proof.go similarity index 91% rename from frontend/std/gadget/accumulator/merkle/proof.go rename to gadgets/accumulator/merkle/proof.go index faa6261ed..7a73a455a 100644 --- a/frontend/std/gadget/accumulator/merkle/proof.go +++ b/gadgets/accumulator/merkle/proof.go @@ -1,9 +1,10 @@ package merkle import ( + "github.com/consensys/gnark/cryptolib/accumulator/merkle" "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/frontend/std/gadget/hash/mimc" - "github.com/consensys/gnark/frontend/std/reference/accumulator/merkle" + "github.com/consensys/gnark/gadgets/hash/mimc" + "github.com/consensys/gurvy" ) // TreeLevel i-th level of a Merkle tree @@ -39,7 +40,10 @@ func NewProof(circuit *frontend.CS, mkProof *merkle.Proof) { // data in mp, leaf are supposed to be already allocated func (mp Proof) computeRoot(circuit *frontend.CS, leaf *frontend.Constraint) (*frontend.Constraint, error) { - hash := mimc.NewMiMC("seed") + hash, err := mimc.NewMiMC("seed", gurvy.BN256) + if err != nil { + return nil, err + } arity := len(mp.Path[0].Elements) var curLeaf *frontend.Constraint diff --git a/frontend/std/gadget/accumulator/merkle/proof_test.go b/gadgets/accumulator/merkle/proof_test.go similarity index 100% rename from frontend/std/gadget/accumulator/merkle/proof_test.go rename to gadgets/accumulator/merkle/proof_test.go diff --git a/frontend/std/gadget/algebra/twisted_edwards/edwards_bls381_test.go.backup b/gadgets/algebra/twisted_edwards/edwards_bls381_test.go.backup similarity index 100% rename from frontend/std/gadget/algebra/twisted_edwards/edwards_bls381_test.go.backup rename to gadgets/algebra/twisted_edwards/edwards_bls381_test.go.backup diff --git a/frontend/std/gadget/algebra/twisted_edwards/edwards_bn256_test.go.backup b/gadgets/algebra/twisted_edwards/edwards_bn256_test.go.backup similarity index 100% rename from frontend/std/gadget/algebra/twisted_edwards/edwards_bn256_test.go.backup rename to gadgets/algebra/twisted_edwards/edwards_bn256_test.go.backup diff --git a/frontend/std/gadget/algebra/twisted_edwards/point.go.backup b/gadgets/algebra/twisted_edwards/point.go.backup similarity index 76% rename from frontend/std/gadget/algebra/twisted_edwards/point.go.backup rename to gadgets/algebra/twisted_edwards/point.go.backup index 229e15ef4..585dc769e 100644 --- a/frontend/std/gadget/algebra/twisted_edwards/point.go.backup +++ b/gadgets/algebra/twisted_edwards/point.go.backup @@ -22,9 +22,9 @@ package twistededwards import ( "github.com/consensys/gnark/frontend" - "github.com/consensys/gurvy/bn256/twistededwards" "github.com/consensys/gnark/internal/utils/debug" "github.com/consensys/gurvy/bn256/fr" + "github.com/consensys/gurvy/bn256/twistededwards" ) // Point point on a twisted Edwards curve in a Snark circuit @@ -187,10 +187,10 @@ func (p *Point) Double(p1 *Point, ecurve twistededwards.CurveParams) *Point { func (p *Point) ScalarMul(p1 interface{}, ecurve twistededwards.CurveParams, scalar *frontend.Constraint, n int) *Point { switch point := p1.(type) { - case *twistededwards.Point: - p.scalarMulFixedBase(point, ecurve, scalar, n) - case twistededwards.Point: - p.scalarMulFixedBase(&point, ecurve, scalar, n) + // case *twistededwards.Point: + // p.scalarMulFixedBase(point, ecurve, scalar, n) + // case twistededwards.Point: + // p.scalarMulFixedBase(&point, ecurve, scalar, n) case *Point: p.scalarMulNonFixedBase(point, scalar, ecurve, n) case Point: @@ -206,88 +206,88 @@ func (p *Point) ScalarMul(p1 interface{}, ecurve twistededwards.CurveParams, sca // n: nbBits of the scalar // Without lookup table -> 6 constraints/bit (1 (bool constraint) + 3 (addition with fixed point) + 1 (select constraint) per bit) // With loopkup table -> 5.5 constraints/bit (7 (generic addition) + 2(bool constraints) + 2 (select lookup table) per 2 bits) -func (p *Point) scalarMulFixedBase(p1 *twistededwards.Point, ecurve twistededwards.CurveParams, scalar *frontend.Constraint, n int) *Point { +// func (p *Point) scalarMulFixedBase(p1 *twistededwards.Point, ecurve twistededwards.CurveParams, scalar *frontend.Constraint, n int) *Point { - debug.Assert(p.circuit != nil, "point not initialized") +// debug.Assert(p.circuit != nil, "point not initialized") - circuit := p.circuit +// circuit := p.circuit - // fir st unpack the scalar - b := circuit.TO_BINARY(scalar, n) +// // fir st unpack the scalar +// b := circuit.TO_BINARY(scalar, n) - // look up tables for x, y coordinates of the current point - // lut[i] = coords of i*base_point for i=0..3 - var lutx, luty [4]fr.Element - var tmp [4]twistededwards.Point +// // look up tables for x, y coordinates of the current point +// // lut[i] = coords of i*base_point for i=0..3 +// var lutx, luty [4]fr.Element +// var tmp [4]twistededwards.Point - // infinity - tmp[0].X.SetZero() - tmp[0].Y.SetOne() - lutx[0] = tmp[0].X - luty[0] = tmp[0].Y +// // infinity +// tmp[0].X.SetZero() +// tmp[0].Y.SetOne() +// lutx[0] = tmp[0].X +// luty[0] = tmp[0].Y - // p1 - tmp[1] = *p1 - lutx[1] = tmp[1].X - luty[1] = tmp[1].Y +// // p1 +// tmp[1] = *p1 +// lutx[1] = tmp[1].X +// luty[1] = tmp[1].Y - // 2*p1 - tmp[2].Double(p1, ecurve) - lutx[2] = tmp[2].X - luty[2] = tmp[2].Y +// // 2*p1 +// tmp[2].Double(p1, ecurve) +// lutx[2] = tmp[2].X +// luty[2] = tmp[2].Y - // 3*p1 - tmp[3].Add(&tmp[2], &tmp[1], ecurve) - lutx[3] = tmp[3].X - luty[3] = tmp[3].Y +// // 3*p1 +// tmp[3].Add(&tmp[2], &tmp[1], ecurve) +// lutx[3] = tmp[3].X +// luty[3] = tmp[3].Y - curPoint := &Point{circuit: p.circuit} - curPoint.X = circuit.SELECT_LUT(b[1], b[0], lutx) - curPoint.Y = circuit.SELECT_LUT(b[1], b[0], luty) +// curPoint := &Point{circuit: p.circuit} +// curPoint.X = circuit.SELECT_LUT(b[1], b[0], lutx) +// curPoint.Y = circuit.SELECT_LUT(b[1], b[0], luty) - for i := 1; i < n/2; i++ { +// for i := 1; i < n/2; i++ { - // update lookup table - tmp[1].Double(&tmp[1], ecurve).Double(&tmp[1], ecurve) - tmp[2].Double(&tmp[2], ecurve).Double(&tmp[2], ecurve) - tmp[3].Double(&tmp[3], ecurve).Double(&tmp[3], ecurve) +// // update lookup table +// tmp[1].Double(&tmp[1], ecurve).Double(&tmp[1], ecurve) +// tmp[2].Double(&tmp[2], ecurve).Double(&tmp[2], ecurve) +// tmp[3].Double(&tmp[3], ecurve).Double(&tmp[3], ecurve) - lutx[1] = tmp[1].X - luty[1] = tmp[1].Y +// lutx[1] = tmp[1].X +// luty[1] = tmp[1].Y - lutx[2] = tmp[2].X - luty[2] = tmp[2].Y +// lutx[2] = tmp[2].X +// luty[2] = tmp[2].Y - lutx[3] = tmp[3].X - luty[3] = tmp[3].Y +// lutx[3] = tmp[3].X +// luty[3] = tmp[3].Y - // select the point to add in the lookup table - toAddx := circuit.SELECT_LUT(b[2*i+1], b[2*i], lutx) - toAddy := circuit.SELECT_LUT(b[2*i+1], b[2*i], luty) - toAdd := &Point{circuit: p.circuit, X: toAddx, Y: toAddy} +// // select the point to add in the lookup table +// toAddx := circuit.SELECT_LUT(b[2*i+1], b[2*i], lutx) +// toAddy := circuit.SELECT_LUT(b[2*i+1], b[2*i], luty) +// toAdd := &Point{circuit: p.circuit, X: toAddx, Y: toAddy} - curPoint.AddGeneric(curPoint, toAdd, ecurve) - } +// curPoint.AddGeneric(curPoint, toAdd, ecurve) +// } - if n%2 != 0 { - tmp[2].Double(&tmp[2], ecurve) - lutx[2] = tmp[2].X - luty[2] = tmp[2].Y +// if n%2 != 0 { +// tmp[2].Double(&tmp[2], ecurve) +// lutx[2] = tmp[2].X +// luty[2] = tmp[2].Y - var one, zero fr.Element - zero.SetZero() - one.SetOne() - last := &Point{circuit: p.circuit} - last.Add(curPoint, &tmp[2], ecurve) +// var one, zero fr.Element +// zero.SetZero() +// one.SetOne() +// last := &Point{circuit: p.circuit} +// last.Add(curPoint, &tmp[2], ecurve) - curPoint.X = circuit.SELECT(b[n-1], last.X, curPoint.X) - curPoint.Y = circuit.SELECT(b[n-1], last.Y, curPoint.Y) - } +// curPoint.X = circuit.SELECT(b[n-1], last.X, curPoint.X) +// curPoint.Y = circuit.SELECT(b[n-1], last.Y, curPoint.Y) +// } - p.X = curPoint.X - p.Y = curPoint.Y - return p -} +// p.X = curPoint.X +// p.Y = curPoint.Y +// return p +// } // ScalarMulGadget computes the scalar multiplication of a point on a twisted Edwards curve // p1: base point (as snark point) diff --git a/gadgets/hash/mimc/encrypt.go b/gadgets/hash/mimc/encrypt.go new file mode 100644 index 000000000..2a3d78b1b --- /dev/null +++ b/gadgets/hash/mimc/encrypt.go @@ -0,0 +1,134 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package mimc + +import ( + "math/big" + + "github.com/consensys/gnark/cryptolib/hash/mimc/bls377" + "github.com/consensys/gnark/cryptolib/hash/mimc/bls381" + "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" + + "github.com/consensys/gnark/frontend" + "github.com/consensys/gurvy" +) + +var encryptFuncs map[gurvy.ID]func(*frontend.CS, MiMC, *frontend.Constraint, *frontend.Constraint) *frontend.Constraint +var newMimc map[gurvy.ID]func(string) MiMC + +func init() { + encryptFuncs = make(map[gurvy.ID]func(*frontend.CS, MiMC, *frontend.Constraint, *frontend.Constraint) *frontend.Constraint) + encryptFuncs[gurvy.BN256] = encryptBN256 + encryptFuncs[gurvy.BLS381] = encryptBLS381 + encryptFuncs[gurvy.BLS377] = encryptBLS377 + + newMimc = make(map[gurvy.ID]func(string) MiMC) + newMimc[gurvy.BN256] = newMimcBN256 + newMimc[gurvy.BLS381] = newMimcBLS381 + newMimc[gurvy.BLS377] = newMimcBLS377 +} + +// ------------------------------------------------------------------------------------------------- +// constructors + +func newMimcBLS377(seed string) MiMC { + res := MiMC{} + tmp := bls377.NewMiMC(seed) + for _, v := range tmp.Params { + var cpy big.Int + v.ToBigIntRegular(&cpy) + res.Params = append(res.Params, cpy) + } + res.id = gurvy.BLS377 + return res +} + +func newMimcBLS381(seed string) MiMC { + res := MiMC{} + tmp := bls381.NewMiMC(seed) + for _, v := range tmp.Params { + var cpy big.Int + v.ToBigIntRegular(&cpy) + res.Params = append(res.Params, cpy) + } + res.id = gurvy.BLS381 + return res +} + +func newMimcBN256(seed string) MiMC { + res := MiMC{} + tmp := bn256.NewMiMC(seed) + for _, v := range tmp.Params { + var cpy big.Int + v.ToBigIntRegular(&cpy) + res.Params = append(res.Params, cpy) + } + res.id = gurvy.BN256 + return res +} + +// ------------------------------------------------------------------------------------------------- +// encryptions functions + +// encryptBn256 of a mimc run expressed as r1cs +func encryptBN256(circuit *frontend.CS, h MiMC, message, key *frontend.Constraint) *frontend.Constraint { + + res := message + + for i := 0; i < len(h.Params); i++ { + //for i := 0; i < 1; i++ { + tmp := circuit.ADD(res, key, h.Params[i]) + // res = (res+k+c)^7 + res = circuit.MUL(tmp, tmp) + res = circuit.MUL(res, tmp) + res = circuit.MUL(res, res) + res = circuit.MUL(res, tmp) + } + res = circuit.ADD(res, key) + return res + +} + +// execution of a mimc run expressed as r1cs +func encryptBLS381(circuit *frontend.CS, h MiMC, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { + + res := message + + for i := 0; i < len(h.Params); i++ { + tmp := circuit.ADD(res, key, h.Params[i]) + // res = (res+k+c)^5 + res = circuit.MUL(tmp, tmp) // square + res = circuit.MUL(res, res) // square + res = circuit.MUL(res, tmp) // mul + } + res = circuit.ADD(res, key) + return res + +} + +// encryptBLS377 of a mimc run expressed as r1cs +func encryptBLS377(circuit *frontend.CS, h MiMC, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { + res := message + for i := 0; i < len(h.Params); i++ { + tmp := circuit.ADD(res, h.Params[i], key) + // res = (res+key+c)**-1 + res = circuit.INV(tmp) + } + res = circuit.ADD(res, key) + return res + +} diff --git a/gadgets/hash/mimc/errors.go b/gadgets/hash/mimc/errors.go new file mode 100644 index 000000000..f441c4365 --- /dev/null +++ b/gadgets/hash/mimc/errors.go @@ -0,0 +1,7 @@ +package mimc + +import "errors" + +var ( + errUnknownCurve = errors.New("unknown curve id") +) diff --git a/frontend/std/gadget/hash/mimc/mimc.go b/gadgets/hash/mimc/mimc.go similarity index 78% rename from frontend/std/gadget/hash/mimc/mimc.go rename to gadgets/hash/mimc/mimc.go index a50f7e3e7..668200d70 100644 --- a/frontend/std/gadget/hash/mimc/mimc.go +++ b/gadgets/hash/mimc/mimc.go @@ -17,18 +17,24 @@ limitations under the License. package mimc import ( + "math/big" + "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/frontend/std/reference/hash/mimc/bn256" + "github.com/consensys/gurvy" ) // MiMC gadget type MiMC struct { - bn256.Params + Params []big.Int + id gurvy.ID } // NewMiMC returns a MiMC gadget, than can be used in a circuit -func NewMiMC(seed string) MiMC { - return MiMC{bn256.NewParams(seed)} +func NewMiMC(seed string, id gurvy.ID) (MiMC, error) { + if constructor, ok := newMimc[id]; ok { + return constructor(seed), nil + } + return MiMC{}, errUnknownCurve } // Hash hash (in r1cs form) using Miyaguchi–Preneel: @@ -39,7 +45,7 @@ func (h MiMC) Hash(circuit *frontend.CS, data ...*frontend.Constraint) *frontend digest := circuit.ALLOCATE(0) for _, stream := range data { - digest = h.encrypt(circuit, stream, digest) + digest = encryptFuncs[h.id](circuit, h, stream, digest) digest = circuit.ADD(digest, stream) } diff --git a/gadgets/hash/mimc/mimc_test.go b/gadgets/hash/mimc/mimc_test.go new file mode 100644 index 000000000..ebb65e397 --- /dev/null +++ b/gadgets/hash/mimc/mimc_test.go @@ -0,0 +1,154 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package mimc + +import ( + "math/big" + "testing" + + backend_bls377 "github.com/consensys/gnark/backend/bls377" + backend_bls381 "github.com/consensys/gnark/backend/bls381" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + + "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" + "github.com/consensys/gurvy" + + groth16_bls377 "github.com/consensys/gnark/backend/bls377/groth16" + groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" + groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" + + mimcbls377 "github.com/consensys/gnark/cryptolib/hash/mimc/bls377" + mimcbls381 "github.com/consensys/gnark/cryptolib/hash/mimc/bls381" + mimcbn256 "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" + + fr_bls377 "github.com/consensys/gurvy/bls377/fr" + fr_bls381 "github.com/consensys/gurvy/bls381/fr" + fr_bn256 "github.com/consensys/gurvy/bn256/fr" +) + +// TODO need tests on MiMC edge cases, bad or un-allocated inputs, and errors +func TestMimcBN256(t *testing.T) { + + assertbn256 := groth16_bn256.NewAssert(t) + + // input + var data big.Int + data.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487", 10) + var databn256 fr_bn256.Element + databn256.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") + + // running MiMC (R1CS) + mimcGadget, err := NewMiMC("seed", gurvy.BN256) + if err != nil { + t.Fatal(err) + } + + // minimal circuit res = hash(data) + circuit := frontend.New() + result := mimcGadget.Hash(&circuit, circuit.PUBLIC_INPUT("data")) + result.Tag("res") + + // running MiMC (Go) + expectedValues := make(map[string]fr_bn256.Element) + expectedValues["res"] = mimcbn256.NewMiMC("seed").Hash(databn256) + + // provide inputs to the circuit + inputs := backend.NewAssignment() + inputs.Assign(backend.Public, "data", data) + + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbn256 := backend_bn256.New(_r1cs) + + assertbn256.Solved(&r1csbn256, inputs, expectedValues) + +} + +func TestMimcBLS381(t *testing.T) { + + assertbls381 := groth16_bls381.NewAssert(t) + + // input + var data big.Int + data.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487", 10) + var databls381 fr_bls381.Element + databls381.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") + + // running MiMC (R1CS) + mimcGadget, err := NewMiMC("seed", gurvy.BLS381) + if err != nil { + t.Fatal(err) + } + + // minimal circuit res = hash(data) + circuit := frontend.New() + result := mimcGadget.Hash(&circuit, circuit.PUBLIC_INPUT("data")) + result.Tag("res") + + // running MiMC (Go) + expectedValues := make(map[string]fr_bls381.Element) + expectedValues["res"] = mimcbls381.NewMiMC("seed").Hash(databls381) + + // provide inputs to the circuit + inputs := backend.NewAssignment() + inputs.Assign(backend.Public, "data", data) + + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbls381 := backend_bls381.New(_r1cs) + + assertbls381.Solved(&r1csbls381, inputs, expectedValues) + +} + +func TestMimcBLS377(t *testing.T) { + + assertbls377 := groth16_bls377.NewAssert(t) + + // input + var data big.Int + data.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487", 10) + var databls377 fr_bls377.Element + databls377.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") + + // running MiMC (R1CS) + mimcGadget, err := NewMiMC("seed", gurvy.BLS377) + if err != nil { + t.Fatal(err) + } + + // minimal circuit res = hash(data) + circuit := frontend.New() + result := mimcGadget.Hash(&circuit, circuit.PUBLIC_INPUT("data")) + result.Tag("res") + + // running MiMC (Go) + expectedValues := make(map[string]fr_bls377.Element) + expectedValues["res"] = mimcbls377.NewMiMC("seed").Hash(databls377) + + // provide inputs to the circuit + inputs := backend.NewAssignment() + inputs.Assign(backend.Public, "data", data) + + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbls377 := backend_bls377.New(_r1cs) + + assertbls377.Solved(&r1csbls377, inputs, expectedValues) + +} diff --git a/frontend/std/gadget/signature/eddsa/eddsa.go.backup b/gadgets/signature/eddsa/eddsa.go.backup similarity index 96% rename from frontend/std/gadget/signature/eddsa/eddsa.go.backup rename to gadgets/signature/eddsa/eddsa.go.backup index 62926a8ec..d84bea142 100644 --- a/frontend/std/gadget/signature/eddsa/eddsa.go.backup +++ b/gadgets/signature/eddsa/eddsa.go.backup @@ -18,7 +18,6 @@ package eddsa import ( "github.com/consensys/gnark/frontend" - twistededwards "github.com/consensys/gnark/frontend/std/gadget/algebra/twisted_edwards" "github.com/consensys/gnark/frontend/std/gadget/hash/mimc" "github.com/consensys/gnark/frontend/std/reference/signature/eddsa" "github.com/consensys/gurvy/bn256/fr" diff --git a/frontend/std/gadget/signature/eddsa/eddsa_test.go.backup b/gadgets/signature/eddsa/eddsa_test.go.backup similarity index 100% rename from frontend/std/gadget/signature/eddsa/eddsa_test.go.backup rename to gadgets/signature/eddsa/eddsa_test.go.backup diff --git a/go.mod b/go.mod index c17e1ba98..13edcb0ce 100644 --- a/go.mod +++ b/go.mod @@ -3,10 +3,10 @@ module github.com/consensys/gnark go 1.14 require ( - github.com/consensys/bavard v0.1.0 - github.com/consensys/gurvy v0.0.1 + github.com/consensys/bavard v0.1.1 + github.com/consensys/gurvy v0.1.0 github.com/pkg/profile v1.4.0 - github.com/spf13/cobra v0.0.6 + github.com/spf13/cobra v0.0.7 github.com/stretchr/testify v1.5.1 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 gopkg.in/yaml.v2 v2.2.8 // indirect diff --git a/go.sum b/go.sum index eaec369e8..5d1a89fa8 100644 --- a/go.sum +++ b/go.sum @@ -11,10 +11,16 @@ github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghf github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= github.com/consensys/bavard v0.1.0 h1:0lsXRFKSD8GuA93yjSlwUQu45LFV4HZFGZIYdouWfMg= github.com/consensys/bavard v0.1.0/go.mod h1:ffZkLPNQSN3E6u+zpArQSleJ/lsraMwKPCHQymPQJtM= +github.com/consensys/bavard v0.1.1/go.mod h1:ffZkLPNQSN3E6u+zpArQSleJ/lsraMwKPCHQymPQJtM= github.com/consensys/goff v0.1.1-0.20200318175900-2b9e7b66b91f h1:oClf8ebLCcoxQXeGUBje1Hok4n4y+XLwbrV2i538d/8= github.com/consensys/goff v0.1.1-0.20200318175900-2b9e7b66b91f/go.mod h1:o2GQlBqSwG9JvC42mpcJ40CwoJxp+rmxWxSKQv+dCW4= +github.com/consensys/goff v0.2.0/go.mod h1:RCji/8mD0qP8UZJCtEG4NEWD6JPwN7S4KBGvRXkVMgw= github.com/consensys/gurvy v0.0.1 h1:Yihv5yVLb0N0FQiA0qjtd7RH1PrybFNN/irEvKufJME= github.com/consensys/gurvy v0.0.1/go.mod h1:7MscQ5ryPPSnUrlIwyciwqcAiAhj6S9Nx0e/XkB/Q74= +github.com/consensys/gurvy v0.0.2-0.20200403081647-771aa8c7f916 h1:C/5jZGr4soHBiF5gOrpKb/oCHDH+bKd8WUzm4lIXdrw= +github.com/consensys/gurvy v0.0.2-0.20200403081647-771aa8c7f916/go.mod h1:7MscQ5ryPPSnUrlIwyciwqcAiAhj6S9Nx0e/XkB/Q74= +github.com/consensys/gurvy v0.1.0 h1:LPtGZfeJ2nHw+OtErgLR8v3l7YxL2CRTi0kB7RqDkwE= +github.com/consensys/gurvy v0.1.0/go.mod h1:lF6umMB+8TC72X/IiaR5AvCwVNsYSTVYHY1fqRwWyT4= github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk= github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= @@ -97,6 +103,8 @@ github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8= github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE= github.com/spf13/cobra v0.0.6 h1:breEStsVwemnKh2/s6gMvSdMEkwW0sK8vGStnlVBMCs= github.com/spf13/cobra v0.0.6/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE= +github.com/spf13/cobra v0.0.7 h1:FfTH+vuMXOas8jmfb5/M7dzEYx7LpcLb7a0LPe34uOU= +github.com/spf13/cobra v0.0.7/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHNrgE= github.com/spf13/jwalterweatherman v1.0.0 h1:XHEdyB+EcvlqZamSM4ZOMGlc93t6AcsBEu9Gc1vn7yk= github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo= github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg= @@ -142,6 +150,8 @@ golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5h golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190412213103-97732733099d h1:+R4KGOnez64A81RvjARKc4UT5/tI9ujCIVX+P5KiHuI= golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20200406155108-e3b113bbe6a4 h1:c1Sgqkh8v6ZxafNGG64r8C8UisIW2TKMJN8P86tKjr0= +golang.org/x/sys v0.0.0-20200406155108-e3b113bbe6a4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg= golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= diff --git a/internal/generators/backend/template/zkpschemes/groth16_utils.go b/internal/generators/backend/template/zkpschemes/groth16_utils.go index 4ea2713ad..8fec9dfd7 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_utils.go +++ b/internal/generators/backend/template/zkpschemes/groth16_utils.go @@ -89,8 +89,8 @@ func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution bac for k, v := range expectedValues { val, ok := res[k] - assert.True(ok, "Variable to test ("+k+") is not tagged") - assert.True(val.Equal(&v), "Tagged variable "+k+" does not have the expected value") + assert.True(ok, "Variable to test <"+k+"> ({{toLower .Curve}}) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> ({{toLower .Curve}}) does not have the expected value") } From b6db9665dec1420f507e6398c96d68a7b3ca5e8e Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Wed, 8 Apr 2020 12:08:16 +0200 Subject: [PATCH 10/19] regenerated version ... --- go.sum | 1 + 1 file changed, 1 insertion(+) diff --git a/go.sum b/go.sum index 5d1a89fa8..0cbd499f2 100644 --- a/go.sum +++ b/go.sum @@ -11,6 +11,7 @@ github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghf github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= github.com/consensys/bavard v0.1.0 h1:0lsXRFKSD8GuA93yjSlwUQu45LFV4HZFGZIYdouWfMg= github.com/consensys/bavard v0.1.0/go.mod h1:ffZkLPNQSN3E6u+zpArQSleJ/lsraMwKPCHQymPQJtM= +github.com/consensys/bavard v0.1.1 h1:sFtk3U10YO4Mt8NNCEZQhMzoQ9UMy2H5GKOx/DwNg80= github.com/consensys/bavard v0.1.1/go.mod h1:ffZkLPNQSN3E6u+zpArQSleJ/lsraMwKPCHQymPQJtM= github.com/consensys/goff v0.1.1-0.20200318175900-2b9e7b66b91f h1:oClf8ebLCcoxQXeGUBje1Hok4n4y+XLwbrV2i538d/8= github.com/consensys/goff v0.1.1-0.20200318175900-2b9e7b66b91f/go.mod h1:o2GQlBqSwG9JvC42mpcJ40CwoJxp+rmxWxSKQv+dCW4= From c6ad99b7ee820da3b3a9be4026aa6fd450582e64 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Thu, 9 Apr 2020 16:36:51 +0200 Subject: [PATCH 11/19] wip refactoring gadgets, tests ok --- backend/bls377/groth16/utils.go | 44 ++-- backend/bls381/groth16/utils.go | 44 ++-- backend/bn256/groth16/utils.go | 44 ++-- cryptolib/signature/eddsa/bls381/eddsa.go | 197 ++++++++++++++ .../signature/eddsa/bls381/eddsa_test.go | 65 +++++ .../signature/eddsa/{ => bn256}/eddsa.go | 0 .../signature/eddsa/{ => bn256}/eddsa_test.go | 2 - examples/mimc/mimc.go | 2 +- gadgets/accumulator/merkle/proof.go | 2 +- gadgets/algebra/twisted_edwards/curve.go | 86 ++++++ .../edwards_bls381_test.go.backup | 192 -------------- .../edwards_bn256_test.go.backup | 192 -------------- .../{point.go.backup => point.go} | 245 +++++++++--------- .../twisted_edwards/twisted_edwards_test.go | 200 ++++++++++++++ gadgets/errors.go | 23 ++ gadgets/hash/mimc/encrypt.go | 26 +- gadgets/hash/mimc/errors.go | 7 - gadgets/hash/mimc/mimc.go | 14 +- gadgets/hash/mimc/mimc_test.go | 6 +- go.mod | 2 +- go.sum | 7 + .../template/zkpschemes/groth16_utils.go | 44 ++-- 22 files changed, 820 insertions(+), 624 deletions(-) create mode 100644 cryptolib/signature/eddsa/bls381/eddsa.go create mode 100644 cryptolib/signature/eddsa/bls381/eddsa_test.go rename cryptolib/signature/eddsa/{ => bn256}/eddsa.go (100%) rename cryptolib/signature/eddsa/{ => bn256}/eddsa_test.go (98%) create mode 100644 gadgets/algebra/twisted_edwards/curve.go delete mode 100644 gadgets/algebra/twisted_edwards/edwards_bls381_test.go.backup delete mode 100644 gadgets/algebra/twisted_edwards/edwards_bn256_test.go.backup rename gadgets/algebra/twisted_edwards/{point.go.backup => point.go} (54%) create mode 100644 gadgets/algebra/twisted_edwards/twisted_edwards_test.go create mode 100644 gadgets/errors.go delete mode 100644 gadgets/hash/mimc/errors.go diff --git a/backend/bls377/groth16/utils.go b/backend/bls377/groth16/utils.go index c17412f1c..e4d21947d 100644 --- a/backend/bls377/groth16/utils.go +++ b/backend/bls377/groth16/utils.go @@ -92,27 +92,7 @@ func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignm } // ensure expected Values are computed correctly - { - // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs - var root fr.Element - fftDomain := backend_bls377.NewDomain(root, backend_bls377.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) - - for k, v := range expectedValues { - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> (bls377) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (bls377) does not have the expected value") - - } - - } + assert.CorrectExecution(r1cs, solution, expectedValues) // prover proof, err := Prove(r1cs, &pk, solution) @@ -132,3 +112,25 @@ func (assert *Assert) Solved(r1cs *backend_bls377.R1CS, solution backend.Assignm assert.True(isValid, "unexpected Verify(proof) result") } } + +// CorrectExecution Verifies that the expected solution matches the solved variables +func (assert *Assert) CorrectExecution(r1cs *backend_bls377.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_bls377.NewDomain(root, backend_bls377.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_bls377) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls377) does not have the expected value") + + } +} diff --git a/backend/bls381/groth16/utils.go b/backend/bls381/groth16/utils.go index bbcb3febc..c6ac8f411 100644 --- a/backend/bls381/groth16/utils.go +++ b/backend/bls381/groth16/utils.go @@ -92,27 +92,7 @@ func (assert *Assert) Solved(r1cs *backend_bls381.R1CS, solution backend.Assignm } // ensure expected Values are computed correctly - { - // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs - var root fr.Element - fftDomain := backend_bls381.NewDomain(root, backend_bls381.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) - - for k, v := range expectedValues { - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> (bls381) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (bls381) does not have the expected value") - - } - - } + assert.CorrectExecution(r1cs, solution, expectedValues) // prover proof, err := Prove(r1cs, &pk, solution) @@ -132,3 +112,25 @@ func (assert *Assert) Solved(r1cs *backend_bls381.R1CS, solution backend.Assignm assert.True(isValid, "unexpected Verify(proof) result") } } + +// CorrectExecution Verifies that the expected solution matches the solved variables +func (assert *Assert) CorrectExecution(r1cs *backend_bls381.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_bls381.NewDomain(root, backend_bls381.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_bls381) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls381) does not have the expected value") + + } +} diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go index 6be016ca7..0c41cd392 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/utils.go @@ -92,27 +92,7 @@ func (assert *Assert) Solved(r1cs *backend_bn256.R1CS, solution backend.Assignme } // ensure expected Values are computed correctly - { - // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs - var root fr.Element - fftDomain := backend_bn256.NewDomain(root, backend_bn256.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) - - for k, v := range expectedValues { - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> (bn256) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (bn256) does not have the expected value") - - } - - } + assert.CorrectExecution(r1cs, solution, expectedValues) // prover proof, err := Prove(r1cs, &pk, solution) @@ -132,3 +112,25 @@ func (assert *Assert) Solved(r1cs *backend_bn256.R1CS, solution backend.Assignme assert.True(isValid, "unexpected Verify(proof) result") } } + +// CorrectExecution Verifies that the expected solution matches the solved variables +func (assert *Assert) CorrectExecution(r1cs *backend_bn256.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_bn256.NewDomain(root, backend_bn256.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_bn256) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bn256) does not have the expected value") + + } +} diff --git a/cryptolib/signature/eddsa/bls381/eddsa.go b/cryptolib/signature/eddsa/bls381/eddsa.go new file mode 100644 index 000000000..408395e45 --- /dev/null +++ b/cryptolib/signature/eddsa/bls381/eddsa.go @@ -0,0 +1,197 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package eddsa + +import ( + "bytes" + "encoding/binary" + "errors" + "math/big" + + "github.com/consensys/gnark/cryptolib/hash/mimc/bls381" + "github.com/consensys/gurvy/bls381/fr" + "github.com/consensys/gurvy/bls381/twistededwards" + "golang.org/x/crypto/blake2b" +) + +var ErrNotOnCurve = errors.New("point not on curve") + +// PrivateKey private key of an eddsa instance +type PrivateKey struct { + randSrc [32]byte // randomizer (non need to convert it when doing scalar mul --> random = H(randSrc,msg)) + scalar fr.Element // secret scalar (non need to convert it when doing scalar mul) + EdCurve *twistededwards.CurveParams +} + +// Signature represents an eddsa signature +// cf https://en.wikipedia.org/wiki/EdDSA for notation +type Signature struct { + R twistededwards.Point + S fr.Element // not in Montgomery form + EdCurve *twistededwards.CurveParams +} + +// PublicKey eddsa signature object +// cf https://en.wikipedia.org/wiki/EdDSA for notation +type PublicKey struct { + A twistededwards.Point +} + +// New creates an instance of eddsa +func New(seed [32]byte, c twistededwards.CurveParams) (PrivateKey, PublicKey) { + + var value big.Int + var pub PublicKey + var priv PrivateKey + + h := blake2b.Sum512(seed[:]) + for i := 0; i < 32; i++ { + priv.randSrc[i] = h[i+32] + } + + // prune the key + // https://tools.ietf.org/html/rfc8032#section-5.1.5, key generation + h[0] &= 0xF8 + h[31] &= 0x7F + h[31] |= 0x40 + + // reverse first bytes because setBytes interpret stream as big endian + // but in eddsa specs s is the first 32 bytes in little endian + for i, j := 0, 32; i < j; i, j = i+1, j-1 { + h[i], h[j] = h[j], h[i] + } + value.SetBytes(h[:32]) + priv.scalar.SetBigInt(&value).FromMont() + priv.EdCurve = &c + + pub.A.ScalarMul(&c.Base, c, priv.scalar) + + return priv, pub +} + +// Sign sign a message (in Montgomery form) +// cf https://en.wikipedia.org/wiki/EdDSA for the notations +// Eddsa is supposed to be built upon Edwards (or twisted Edwards) curves having 256 bits group size and cofactor=4 or 8 +func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signature, error) { + + res := Signature{} + + // check that base point is on the curve + if !privateKey.EdCurve.Base.IsOnCurve(*privateKey.EdCurve) { + return res, ErrNotOnCurve + } + + var tmp big.Int + var randScalar fr.Element + + // randSrc = privKey.randSrc || msg (-> message = MSB message .. LSB message) + randSrc := make([]byte, 64) + for i, v := range privateKey.randSrc { + randSrc[i] = v + } + buf := new(bytes.Buffer) + err := binary.Write(buf, binary.BigEndian, message) + if err != nil { + return res, err + } + bufb := buf.Bytes() + for i := 0; i < 32; i++ { + randSrc[32+i] = bufb[i] + } + + // randBytes = H(randSrc) + randBytes := blake2b.Sum512(randSrc[:]) + tmp.SetBytes(randBytes[:32]) + randScalar.SetBigInt(&tmp).FromMont() + + // compute R = randScalar*Base + res.R.ScalarMul(&privateKey.EdCurve.Base, *privateKey.EdCurve, randScalar) + if !res.R.IsOnCurve(*privateKey.EdCurve) { + return Signature{}, ErrNotOnCurve + } + + // compute H(R, A, M), all parameters in data are in Montgomery form + data := []fr.Element{ + res.R.X, + res.R.Y, + publicKey.A.X, + publicKey.A.Y, + message, + } + + hram := bls381.NewMiMC("seed").Hash(data...) + hram.FromMont() + + // Compute s = randScalarInt + H(R,A,M)*S + // going with big int to do ops mod curve order + var hramInt, sInt, randScalarInt big.Int + hram.ToBigInt(&hramInt) + privateKey.scalar.ToBigInt(&sInt) + randScalar.ToBigInt(&randScalarInt) + hramInt.Mul(&hramInt, &sInt). + Add(&hramInt, &randScalarInt). + Mod(&hramInt, &privateKey.EdCurve.Order) + res.S.SetBigInt(&hramInt).FromMont() + res.EdCurve = privateKey.EdCurve + + return res, nil +} + +// Verify verifies an eddsa signature +// cf https://en.wikipedia.org/wiki/EdDSA +func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { + + // verify that pubKey and R are on the curve + if !pubKey.A.IsOnCurve(*sig.EdCurve) { + return false, ErrNotOnCurve + } + + // compute H(R, A, M), all parameters in data are in Montgomery form + data := []fr.Element{ + sig.R.X, + sig.R.Y, + pubKey.A.X, + pubKey.A.Y, + message, + } + hram := bls381.NewMiMC("seed").Hash(data...) + hram.FromMont() + + // lhs = cofactor*S*Base + var lhs twistededwards.Point + lhs.ScalarMul(&sig.EdCurve.Base, *sig.EdCurve, sig.S). + ScalarMul(&lhs, *sig.EdCurve, sig.EdCurve.Cofactor) + + if !lhs.IsOnCurve(*sig.EdCurve) { + return false, ErrNotOnCurve + } + + // rhs = cofactor*(R + H(R,A,M)*A) + var rhs twistededwards.Point + rhs.ScalarMul(&pubKey.A, *sig.EdCurve, hram). + Add(&rhs, &sig.R, *sig.EdCurve). + ScalarMul(&rhs, *sig.EdCurve, sig.EdCurve.Cofactor) + if !rhs.IsOnCurve(*sig.EdCurve) { + return false, ErrNotOnCurve + } + + // verifies that cofactor*S*Base=cofactor*(R + H(R,A,M)*A) + if !lhs.X.Equal(&rhs.X) || !lhs.Y.Equal(&rhs.Y) { + return false, nil + } + return true, nil +} diff --git a/cryptolib/signature/eddsa/bls381/eddsa_test.go b/cryptolib/signature/eddsa/bls381/eddsa_test.go new file mode 100644 index 000000000..69905338f --- /dev/null +++ b/cryptolib/signature/eddsa/bls381/eddsa_test.go @@ -0,0 +1,65 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package eddsa + +import ( + "testing" + + "github.com/consensys/gurvy/bls381/fr" + "github.com/consensys/gurvy/bls381/twistededwards" +) + +func TestEddsa(t *testing.T) { + + edcurve := twistededwards.GetEdwardsCurve() + + var seed [32]byte + s := []byte("eddsa") + for i, v := range s { + seed[i] = v + } + + privKey, pubKey := New(seed, edcurve) + + var msg fr.Element + msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") + + signedMsg, err := Sign(privKey, pubKey, msg) + if err != nil { + t.Fatal(err) + } + + // verifies correct msg + res, err := Verify(pubKey, signedMsg, msg) + if err != nil { + t.Fatal(err) + } + if !res { + t.Fatal("Verifiy correct signature should return true") + } + + // verifies wrong msg + msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035979") + res, err = Verify(pubKey, signedMsg, msg) + if err != nil { + t.Fatal(err) + } + if res { + t.Fatal("Verfiy wrong signature should be false") + } + +} diff --git a/cryptolib/signature/eddsa/eddsa.go b/cryptolib/signature/eddsa/bn256/eddsa.go similarity index 100% rename from cryptolib/signature/eddsa/eddsa.go rename to cryptolib/signature/eddsa/bn256/eddsa.go diff --git a/cryptolib/signature/eddsa/eddsa_test.go b/cryptolib/signature/eddsa/bn256/eddsa_test.go similarity index 98% rename from cryptolib/signature/eddsa/eddsa_test.go rename to cryptolib/signature/eddsa/bn256/eddsa_test.go index b30a331c5..92684feff 100644 --- a/cryptolib/signature/eddsa/eddsa_test.go +++ b/cryptolib/signature/eddsa/bn256/eddsa_test.go @@ -1,5 +1,3 @@ -// +build bls381 bn256 - /* Copyright © 2020 ConsenSys diff --git a/examples/mimc/mimc.go b/examples/mimc/mimc.go index 83394fcba..179266d84 100644 --- a/examples/mimc/mimc.go +++ b/examples/mimc/mimc.go @@ -23,7 +23,7 @@ func New() *backend_bn256.R1CS { hash := circuit.PUBLIC_INPUT("h") // hash function - mimc, _ := mimc.NewMiMC("seed", gurvy.BN256) + mimc, _ := mimc.NewMiMCGadget("seed", gurvy.BN256) // specify constraints // mimc(preImage) == hash diff --git a/gadgets/accumulator/merkle/proof.go b/gadgets/accumulator/merkle/proof.go index 7a73a455a..4e8df45e0 100644 --- a/gadgets/accumulator/merkle/proof.go +++ b/gadgets/accumulator/merkle/proof.go @@ -40,7 +40,7 @@ func NewProof(circuit *frontend.CS, mkProof *merkle.Proof) { // data in mp, leaf are supposed to be already allocated func (mp Proof) computeRoot(circuit *frontend.CS, leaf *frontend.Constraint) (*frontend.Constraint, error) { - hash, err := mimc.NewMiMC("seed", gurvy.BN256) + hash, err := mimc.NewMiMCGadget("seed", gurvy.BN256) if err != nil { return nil, err } diff --git a/gadgets/algebra/twisted_edwards/curve.go b/gadgets/algebra/twisted_edwards/curve.go new file mode 100644 index 000000000..c1873d638 --- /dev/null +++ b/gadgets/algebra/twisted_edwards/curve.go @@ -0,0 +1,86 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package twistededwards + +import ( + "math/big" + + "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/frontend" + "github.com/consensys/gnark/gadgets" + "github.com/consensys/gurvy" + edbls381 "github.com/consensys/gurvy/bls381/twistededwards" + edbn256 "github.com/consensys/gurvy/bn256/twistededwards" +) + +// EdCurveGadget stores the info on the chosen edwards curve +type EdCurveGadget struct { + A, D, Cofactor, Order, BaseX, BaseY big.Int +} + +var newTwistedEdwards map[gurvy.ID]func(*frontend.CS) EdCurveGadget + +func init() { + newTwistedEdwards = make(map[gurvy.ID]func(*frontend.CS) EdCurveGadget) + newTwistedEdwards[gurvy.BLS381] = newEdBLS381 + newTwistedEdwards[gurvy.BN256] = newEdBN256 +} + +// NewEdCurveGadget returns an Edwards curve parameters +func NewEdCurveGadget(circuit *frontend.CS, id gurvy.ID) (EdCurveGadget, error) { + if val, ok := newTwistedEdwards[id]; ok { + return val(circuit), nil + } + return EdCurveGadget{}, gadgets.ErrUnknownCurve +} + +// ------------------------------------------------------------------------------------------------- +// constructors + +func newEdBN256(circuit *frontend.CS) EdCurveGadget { + + edcurve := edbn256.GetEdwardsCurve() + + res := EdCurveGadget{ + A: backend.FromInterface(edcurve.A), + D: backend.FromInterface(edcurve.D), + Cofactor: backend.FromInterface(edcurve.Cofactor), + Order: backend.FromInterface(edcurve.Order), + BaseX: backend.FromInterface(edcurve.Base.X), + BaseY: backend.FromInterface(edcurve.Base.Y), + } + + return res + +} + +func newEdBLS381(circuit *frontend.CS) EdCurveGadget { + + edcurve := edbls381.GetEdwardsCurve() + + res := EdCurveGadget{ + A: backend.FromInterface(edcurve.A), + D: backend.FromInterface(edcurve.D), + Cofactor: backend.FromInterface(edcurve.Cofactor), + Order: backend.FromInterface(edcurve.Order), + BaseX: backend.FromInterface(edcurve.Base.X), + BaseY: backend.FromInterface(edcurve.Base.Y), + } + + return res + +} diff --git a/gadgets/algebra/twisted_edwards/edwards_bls381_test.go.backup b/gadgets/algebra/twisted_edwards/edwards_bls381_test.go.backup deleted file mode 100644 index 03675590e..000000000 --- a/gadgets/algebra/twisted_edwards/edwards_bls381_test.go.backup +++ /dev/null @@ -1,192 +0,0 @@ -// +build bls381 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import ( - "testing" - - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend" - twistededwards "github.com/consensys/gnark/frontend/std/reference/algebra/twisted_edwards" -) - -func TestAdd(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - // get curve parameters - ed := twistededwards.GetEdwardsCurve() - - // set the Snark point - pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) - - // add points in circuit (the method updates the underlying plain points as well) - resPointSnark := pointSnark.Add(&pointSnark, &ed.Base, ed) - resPointSnark.X.Tag("xg") - resPointSnark.Y.Tag("yg") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x", "21793328330329971148710654283888115697962123987759099803244199498744022094670") - inputs.Assign(backend.Secret, "y", "2101040637884652362150023747029283466236613497763786920682459476507158507058") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("2533524241621305345285734729686329955348757412587574960245868173345809049635") - expectedv.SetString("42409967057463448917138434597972431415053095930787202051479921551234370983529") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) -} - -func TestAddGeneric(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - pointSnark1 := NewPoint(&s, s.SECRET_INPUT("x1"), s.SECRET_INPUT("y1")) - pointSnark2 := NewPoint(&s, s.SECRET_INPUT("x2"), s.SECRET_INPUT("y2")) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark1.AddGeneric(&pointSnark1, &pointSnark2, ed) - pointSnark1.X.Tag("xg") - pointSnark1.Y.Tag("yg") - - //r1cs := frontend.NewR1CS(&s) - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x1", "21793328330329971148710654283888115697962123987759099803244199498744022094670") - inputs.Assign(backend.Secret, "y1", "2101040637884652362150023747029283466236613497763786920682459476507158507058") - inputs.Assign(backend.Secret, "x2", "50629843885093813360334764484465489653158679010834922765195739220081842003850") - inputs.Assign(backend.Secret, "y2", "39525475875082628301311747912064089490877815436253076910246067124459956047086") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("35199665011228459549784465709909589656817343715952606097903780358611765544262") - expectedv.SetString("35317228978363680085508213497002527319878195549272460436820924737513178285870") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) - -} - -func TestDouble(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark.Double(&pointSnark, ed) - pointSnark.X.Tag("xg") - pointSnark.Y.Tag("yg") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x", "23426137002068529236790192115758361610982344002369094106619281483467893291614") - inputs.Assign(backend.Secret, "y", "39325435222430376843701388596190331198052476467368316772266670064146548432123") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("51974064954906533666496091627071179705233333606733681005590705257300104702890") - expectedv.SetString("50544520877185042664614914770414299746332988052510540984445210988959219538329") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) - -} - -func TestScalarMulFixedBase(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // set point in the circuit - // TODO here we want a constructor that needs only the circuit - pointSnark := Point{circuit: &s} - - // set scalar - scalar := s.SECRET_INPUT("scalar") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "scalar", "28242048") - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark.scalarMulFixedBase(&ed.Base, ed, scalar, 25) - pointSnark.X.Tag("xg") - pointSnark.Y.Tag("yg") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("41219514559180903813234691537787707319466612367446320200474631050001556953343") - expectedv.SetString("36528743687860298147244557954756268404118125957573115342278522894659264614911") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) -} - -func TestScalarMulNonFixedBase(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // set point in the circuit - pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) - - // set scalar - scalar := s.ALLOCATE("28242048") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x", "23426137002068529236790192115758361610982344002369094106619281483467893291614") - inputs.Assign(backend.Secret, "y", "39325435222430376843701388596190331198052476467368316772266670064146548432123") - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark.scalarMulNonFixedBase(&pointSnark, scalar, ed, 25) - pointSnark.X.Tag("xg") - pointSnark.Y.Tag("yg") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("41219514559180903813234691537787707319466612367446320200474631050001556953343") - expectedv.SetString("36528743687860298147244557954756268404118125957573115342278522894659264614911") - assert.Solved(s, inputs, expectedValues) - -} diff --git a/gadgets/algebra/twisted_edwards/edwards_bn256_test.go.backup b/gadgets/algebra/twisted_edwards/edwards_bn256_test.go.backup deleted file mode 100644 index c70fce68d..000000000 --- a/gadgets/algebra/twisted_edwards/edwards_bn256_test.go.backup +++ /dev/null @@ -1,192 +0,0 @@ -// +build bn256 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package twistededwards - -import ( - "testing" - - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend" - twistededwards "github.com/consensys/gnark/frontend/std/reference/algebra/twisted_edwards" -) - -func TestAdd(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - // get curve parameters - ed := twistededwards.GetEdwardsCurve() - - // set the Snark point - pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) - - // add points in circuit (the method updates the underlying plain points as well) - resPointSnark := pointSnark.Add(&pointSnark, &ed.Base, ed) - resPointSnark.X.Tag("xg") - resPointSnark.Y.Tag("yg") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x", "15132049151119024294202596478829150741889300374007672163496852915064138587014") - inputs.Assign(backend.Secret, "y", "11523897191511824241384532572407048303306774918928882376450136656947192273193") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("4966531224162673480738068143298314346828081427171102366578720605707900725483") - expectedv.SetString("18072205942244039714668938595243139985382136665954711533267729308917439031819") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) -} - -func TestAddGeneric(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - pointSnark1 := NewPoint(&s, s.SECRET_INPUT("x1"), s.SECRET_INPUT("y1")) - pointSnark2 := NewPoint(&s, s.SECRET_INPUT("x2"), s.SECRET_INPUT("y2")) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark1.AddGeneric(&pointSnark1, &pointSnark2, ed) - pointSnark1.X.Tag("xg") - pointSnark1.Y.Tag("yg") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x1", "5299619240641551281634865583518297030282874472190772894086521144482721001553") - inputs.Assign(backend.Secret, "y1", "16950150798460657717958625567821834550301663161624707787222815936182638968203") - inputs.Assign(backend.Secret, "x2", "15132049151119024294202596478829150741889300374007672163496852915064138587014") - inputs.Assign(backend.Secret, "y2", "11523897191511824241384532572407048303306774918928882376450136656947192273193") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("4966531224162673480738068143298314346828081427171102366578720605707900725483") - expectedv.SetString("18072205942244039714668938595243139985382136665954711533267729308917439031819") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) -} - -func TestDouble(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark.Double(&pointSnark, ed) - pointSnark.X.Tag("xg") - pointSnark.Y.Tag("yg") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") - inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("10031262171927540148667355526369034398030886437092045105752248699557385197826") - expectedv.SetString("633281375905621697187330766174974863687049529291089048651929454608812697683") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) -} - -func TestScalarMulFixedBase(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // set point in the circuit - pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) - - // set scalar - scalar := s.ALLOCATE("28242048") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") - inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark.scalarMulFixedBase(&ed.Base, ed, scalar, 25) - pointSnark.X.Tag("xg") - pointSnark.Y.Tag("yg") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") - expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) - -} - -func TestScalarMulNonFixedBase(t *testing.T) { - - s := frontend.New() - - assert := frontend.NewAssert(t) - - // set curve parameters - ed := twistededwards.GetEdwardsCurve() - - // set point in the circuit - pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) - - // set scalar - scalar := s.ALLOCATE("28242048") - - inputs := backend.NewAssignment() - inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") - inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") - - // add points in circuit (the method updates the underlying plain points as well) - pointSnark.scalarMulNonFixedBase(&pointSnark, scalar, ed, 25) - pointSnark.X.Tag("xg") - pointSnark.Y.Tag("yg") - - expectedValues := make(map[string]interface{}) - var expectedu, expectedv fr.Element - expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") - expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") - expectedValues["xg"] = expectedu - expectedValues["yg"] = expectedv - - assert.Solved(s, inputs, expectedValues) - -} diff --git a/gadgets/algebra/twisted_edwards/point.go.backup b/gadgets/algebra/twisted_edwards/point.go similarity index 54% rename from gadgets/algebra/twisted_edwards/point.go.backup rename to gadgets/algebra/twisted_edwards/point.go index 585dc769e..e35e9adc7 100644 --- a/gadgets/algebra/twisted_edwards/point.go.backup +++ b/gadgets/algebra/twisted_edwards/point.go @@ -16,58 +16,54 @@ limitations under the License. package twistededwards -// versions of bn256 +// version of bn256 // https://github.com/matter-labs/pairing/blob/master/src/bn256/fq.rs -// cloudfare one (in golang) import ( + "math/big" + + "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gurvy/bn256/fr" - "github.com/consensys/gurvy/bn256/twistededwards" ) -// Point point on a twisted Edwards curve in a Snark circuit -type Point struct { - X, Y *frontend.Constraint - circuit *frontend.CS +// PointGadget point on a twisted Edwards curve in a Snark circuit +type PointGadget struct { + X, Y *frontend.Constraint } -// NewPoint creates a new instance of Point +// NewPointGadget creates a new instance of Point // if x and y are not of type frontend.Constraint // they must be fr.Element and will be allocated (ALLOCATE) in the circuit -func NewPoint(circuit *frontend.CS, _x, _y interface{}) Point { +func NewPointGadget(circuit *frontend.CS, _x, _y interface{}) PointGadget { // TODO one should be able to create an empty point, should we use this switch in ALLOCATE? if _x == nil && _y == nil { - return Point{ + return PointGadget{ nil, nil, - circuit, } } - return Point{ + return PointGadget{ circuit.ALLOCATE(_x), circuit.ALLOCATE(_y), - circuit, } } -// IsOnCurve checks if a point is on the twisted Edwards curve +// IsOnCurveGadget checks if a point is on the twisted Edwards curve // ax^2 + y^2 = 1 + d*x^2*y^2 -func (p *Point) IsOnCurve(ecurve twistededwards.CurveParams) { - debug.Assert(p.X != nil && p.Y != nil && p.circuit != nil, "point not initialized") - - circuit := p.circuit - var one fr.Element - one.SetOne() - l1 := frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: ecurve.A}} - l2 := frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: one}} +func (p *PointGadget) IsOnCurveGadget(circuit *frontend.CS, curve EdCurveGadget) { + + debug.Assert(p.X != nil && p.Y != nil, "point not initialized") + + one := big.NewInt(1) + l1 := frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: curve.A}} + l2 := frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: *one}} axx := circuit.MUL(l1, l2) yy := circuit.MUL(p.Y, p.Y) lhs := circuit.ADD(axx, yy) - l1 = frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: ecurve.D}} - l2 = frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: one}} + l1 = frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: curve.D}} + l2 = frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: *one}} dxx := circuit.MUL(l1, l2) dxxyy := circuit.MUL(dxx, yy) rhs := circuit.ADD(dxxyy, one) @@ -78,126 +74,131 @@ func (p *Point) IsOnCurve(ecurve twistededwards.CurveParams) { // Add Adds two points, among which is one fixed point (the base), on a twisted edwards curve (eg jubjub) // p1, base, ecurve are respectively: the point to add, a known base point, and the parameters of the twisted edwards curve -func (p *Point) Add(p1 *Point, base *twistededwards.Point, ecurve twistededwards.CurveParams) *Point { +func (p PointGadget) Add(circuit *frontend.CS, p1 *PointGadget, x, y interface{}, curve EdCurveGadget) PointGadget { - debug.Assert(p1.circuit != nil && p1.X != nil && p1.Y != nil, "point not initialized") + debug.Assert(p1.X != nil && p1.Y != nil, "point not initialized") - circuit := p1.circuit // cf https://z.cash/technology/jubjub/ // or https://eprint.iacr.org/2008/013.pdf - res := &Point{circuit: p.circuit} + res := PointGadget{nil, nil} // constraint 1 b := circuit.MUL(p1.X, p1.Y) - var duv fr.Element - duv.Mul(&base.X, &base.Y).Mul(&duv, &ecurve.D) + X := backend.FromInterface(x) + Y := backend.FromInterface(y) + + var duv big.Int + duv.Mul(&X, &Y).Mul(&duv, &curve.D) - var one fr.Element - one.SetOne() + one := big.NewInt(1) oneWire := circuit.ALLOCATE(one) // constraint 2 den := frontend.LinearCombination{ - frontend.Term{Constraint: oneWire, Coeff: one}, + frontend.Term{Constraint: oneWire, Coeff: *one}, frontend.Term{Constraint: b, Coeff: duv}, } num := frontend.LinearCombination{ - frontend.Term{Constraint: p1.X, Coeff: base.Y}, - frontend.Term{Constraint: p1.Y, Coeff: base.X}, + frontend.Term{Constraint: p1.X, Coeff: Y}, + frontend.Term{Constraint: p1.Y, Coeff: X}, } res.X = circuit.DIV(num, den) // constraint 3 duv.Neg(&duv) den = frontend.LinearCombination{ - frontend.Term{Constraint: oneWire, Coeff: one}, + frontend.Term{Constraint: oneWire, Coeff: *one}, frontend.Term{Constraint: b, Coeff: duv}, } - var tmp fr.Element - tmp.Neg(&ecurve.A).Mul(&tmp, &base.X) + // TODO here storing big.Int without reduction results in a memory blow up... + // But storing the cruve params ad Fr elmts specialiazes the structure... + // Don't know what is the best here + var tmp big.Int + tmp.Neg(&curve.A).Mul(&tmp, &X) num = frontend.LinearCombination{ - frontend.Term{Constraint: p1.Y, Coeff: base.Y}, + frontend.Term{Constraint: p1.Y, Coeff: Y}, frontend.Term{Constraint: p1.X, Coeff: tmp}, } res.Y = circuit.DIV(num, den) p.X = res.X p.Y = res.Y + return p } -// AddGeneric Adds two points on a twisted edwards curve (eg jubjub) -// p1, p2, c are respectively: the point to add, a known base point, and the parameters of the twisted edwards curve -func (p *Point) AddGeneric(p1, p2 *Point, ecurve twistededwards.CurveParams) *Point { +// // AddGeneric Adds two points on a twisted edwards curve (eg jubjub) +// // p1, p2, c are respectively: the point to add, a known base point, and the parameters of the twisted edwards curve +// func (p *Point) AddGeneric(p1, p2 *Point, ecurve twistededwards.CurveParams) *Point { - debug.Assert(p1.circuit != nil && p1.X != nil && p1.Y != nil, "point not initialized") - debug.Assert(p2.circuit != nil && p2.X != nil && p2.Y != nil, "point not initialized") +// debug.Assert(p1.circuit != nil && p1.X != nil && p1.Y != nil, "point not initialized") +// debug.Assert(p2.circuit != nil && p2.X != nil && p2.Y != nil, "point not initialized") - circuit := p.circuit - // cf https://z.cash/technology/jubjub/ - // or https://eprint.iacr.org/2008/013.pdf - res := &Point{circuit: p.circuit} - - var one fr.Element - one.SetOne() - - oneWire := circuit.ALLOCATE(one) - - beta := circuit.MUL(p1.X, p2.Y) - gamma := circuit.MUL(p1.Y, p2.X) - delta := circuit.MUL(p1.Y, p2.Y) - epsilon := circuit.MUL(p1.X, p2.X) - tau := circuit.MUL(delta, epsilon) - num := frontend.LinearCombination{ - frontend.Term{Constraint: beta, Coeff: one}, - frontend.Term{Constraint: gamma, Coeff: one}, - } - den := frontend.LinearCombination{ - frontend.Term{Constraint: oneWire, Coeff: one}, - frontend.Term{Constraint: tau, Coeff: ecurve.D}, - } - res.X = circuit.DIV(num, den) - var minusa fr.Element - minusa.Neg(&ecurve.A) - num = frontend.LinearCombination{ - frontend.Term{Constraint: delta, Coeff: one}, - frontend.Term{Constraint: epsilon, Coeff: minusa}, - } - var minusd fr.Element - minusd.Neg(&ecurve.D) - den = frontend.LinearCombination{ - frontend.Term{Constraint: oneWire, Coeff: one}, - frontend.Term{Constraint: tau, Coeff: minusd}, - } - res.Y = circuit.DIV(num, den) +// circuit := p.circuit +// // cf https://z.cash/technology/jubjub/ +// // or https://eprint.iacr.org/2008/013.pdf +// res := &Point{circuit: p.circuit} + +// var one fr.Element +// one.SetOne() + +// oneWire := circuit.ALLOCATE(one) + +// beta := circuit.MUL(p1.X, p2.Y) +// gamma := circuit.MUL(p1.Y, p2.X) +// delta := circuit.MUL(p1.Y, p2.Y) +// epsilon := circuit.MUL(p1.X, p2.X) +// tau := circuit.MUL(delta, epsilon) +// num := frontend.LinearCombination{ +// frontend.Term{Constraint: beta, Coeff: one}, +// frontend.Term{Constraint: gamma, Coeff: one}, +// } +// den := frontend.LinearCombination{ +// frontend.Term{Constraint: oneWire, Coeff: one}, +// frontend.Term{Constraint: tau, Coeff: ecurve.D}, +// } +// res.X = circuit.DIV(num, den) +// var minusa fr.Element +// minusa.Neg(&ecurve.A) +// num = frontend.LinearCombination{ +// frontend.Term{Constraint: delta, Coeff: one}, +// frontend.Term{Constraint: epsilon, Coeff: minusa}, +// } +// var minusd fr.Element +// minusd.Neg(&ecurve.D) +// den = frontend.LinearCombination{ +// frontend.Term{Constraint: oneWire, Coeff: one}, +// frontend.Term{Constraint: tau, Coeff: minusd}, +// } +// res.Y = circuit.DIV(num, den) - p.X = res.X - p.Y = res.Y - return p -} +// p.X = res.X +// p.Y = res.Y +// return p +// } -// Double doubles a points in SNARK coordinates -func (p *Point) Double(p1 *Point, ecurve twistededwards.CurveParams) *Point { - p.AddGeneric(p1, p1, ecurve) - return p -} +// // Double doubles a points in SNARK coordinates +// func (p *Point) Double(p1 *Point, ecurve twistededwards.CurveParams) *Point { +// p.AddGeneric(p1, p1, ecurve) +// return p +// } -// ScalarMul computes the scalar multiplication of a point on a twisted Edwards curve -func (p *Point) ScalarMul(p1 interface{}, ecurve twistededwards.CurveParams, scalar *frontend.Constraint, n int) *Point { - - switch point := p1.(type) { - // case *twistededwards.Point: - // p.scalarMulFixedBase(point, ecurve, scalar, n) - // case twistededwards.Point: - // p.scalarMulFixedBase(&point, ecurve, scalar, n) - case *Point: - p.scalarMulNonFixedBase(point, scalar, ecurve, n) - case Point: - p.scalarMulNonFixedBase(&point, scalar, ecurve, n) - } - return p -} +// // ScalarMul computes the scalar multiplication of a point on a twisted Edwards curve +// func (p *Point) ScalarMul(p1 interface{}, ecurve twistededwards.CurveParams, scalar *frontend.Constraint, n int) *Point { + +// switch point := p1.(type) { +// // case *twistededwards.Point: +// // p.scalarMulFixedBase(point, ecurve, scalar, n) +// // case twistededwards.Point: +// // p.scalarMulFixedBase(&point, ecurve, scalar, n) +// case *Point: +// p.scalarMulNonFixedBase(point, scalar, ecurve, n) +// case Point: +// p.scalarMulNonFixedBase(&point, scalar, ecurve, n) +// } +// return p +// } // ScalarMulGadget computes the scalar multiplication of a point on a twisted Edwards curve // p1: base point (in plain go) @@ -295,24 +296,24 @@ func (p *Point) ScalarMul(p1 interface{}, ecurve twistededwards.CurveParams, sca // scal: scalar as a SNARK constraint // n: nbBits of the scalar // Standard left to right double and add -func (p *Point) scalarMulNonFixedBase(p1 *Point, scalar *frontend.Constraint, c twistededwards.CurveParams, n int) *Point { +// func (p *Point) scalarMulNonFixedBase(p1 *Point, scalar *frontend.Constraint, c twistededwards.CurveParams, n int) *Point { - circuit := p1.circuit +// circuit := p1.circuit - // first unpack the scalar - b := circuit.TO_BINARY(scalar, n) +// // first unpack the scalar +// b := circuit.TO_BINARY(scalar, n) - res := NewPoint(circuit, 0, 1) +// res := NewPoint(circuit, 0, 1) - for i := len(b) - 1; i >= 0; i-- { - res.Double(&res, c) - tmp := &Point{circuit: circuit} - tmp.AddGeneric(&res, p1, c) - res.X = circuit.SELECT(b[i], tmp.X, res.X) - res.Y = circuit.SELECT(b[i], tmp.Y, res.Y) - } +// for i := len(b) - 1; i >= 0; i-- { +// res.Double(&res, c) +// tmp := &Point{circuit: circuit} +// tmp.AddGeneric(&res, p1, c) +// res.X = circuit.SELECT(b[i], tmp.X, res.X) +// res.Y = circuit.SELECT(b[i], tmp.Y, res.Y) +// } - p.X = res.X - p.Y = res.Y - return p -} +// p.X = res.X +// p.Y = res.Y +// return p +// } diff --git a/gadgets/algebra/twisted_edwards/twisted_edwards_test.go b/gadgets/algebra/twisted_edwards/twisted_edwards_test.go new file mode 100644 index 000000000..7ff762158 --- /dev/null +++ b/gadgets/algebra/twisted_edwards/twisted_edwards_test.go @@ -0,0 +1,200 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package twistededwards + +import ( + "testing" + + "github.com/consensys/gnark/backend" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" + "github.com/consensys/gnark/frontend" + "github.com/consensys/gurvy" + "github.com/consensys/gurvy/bn256/fr" + fr_bn256 "github.com/consensys/gurvy/bn256/fr" +) + +func TestAdd(t *testing.T) { + + circuit := frontend.New() + + assertbn256 := groth16_bn256.NewAssert(t) + + // get edwards curve gadget + edgadget, err := NewEdCurveGadget(&circuit, gurvy.BN256) + if err != nil { + t.Fatal(err) + } + + // set the Snark point + pointSnark := NewPointGadget(&circuit, circuit.SECRET_INPUT("x"), circuit.SECRET_INPUT("y")) + + // add points in circuit (the method updates the underlying plain points as well) + resPointSnark := pointSnark.Add(&circuit, &pointSnark, edgadget.BaseX, edgadget.BaseY, edgadget) + resPointSnark.X.Tag("xg") + resPointSnark.Y.Tag("yg") + + inputs := backend.NewAssignment() + inputs.Assign(backend.Secret, "x", "15132049151119024294202596478829150741889300374007672163496852915064138587014") + inputs.Assign(backend.Secret, "y", "11523897191511824241384532572407048303306774918928882376450136656947192273193") + + expectedValues := make(map[string]fr_bn256.Element) + var expectedu, expectedv fr.Element + expectedu.SetString("4966531224162673480738068143298314346828081427171102366578720605707900725483") + expectedv.SetString("18072205942244039714668938595243139985382136665954711533267729308917439031819") + expectedValues["xg"] = expectedu + expectedValues["yg"] = expectedv + + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbn256 := backend_bn256.New(_r1cs) + + assertbn256.Solved(&r1csbn256, inputs, expectedValues) +} + +// func TestAddGeneric(t *testing.T) { + +// s := frontend.New() + +// assert := frontend.NewAssert(t) + +// pointSnark1 := NewPoint(&s, s.SECRET_INPUT("x1"), s.SECRET_INPUT("y1")) +// pointSnark2 := NewPoint(&s, s.SECRET_INPUT("x2"), s.SECRET_INPUT("y2")) + +// // set curve parameters +// ed := twistededwards.GetEdwardsCurve() + +// // add points in circuit (the method updates the underlying plain points as well) +// pointSnark1.AddGeneric(&pointSnark1, &pointSnark2, ed) +// pointSnark1.X.Tag("xg") +// pointSnark1.Y.Tag("yg") + +// inputs := backend.NewAssignment() +// inputs.Assign(backend.Secret, "x1", "5299619240641551281634865583518297030282874472190772894086521144482721001553") +// inputs.Assign(backend.Secret, "y1", "16950150798460657717958625567821834550301663161624707787222815936182638968203") +// inputs.Assign(backend.Secret, "x2", "15132049151119024294202596478829150741889300374007672163496852915064138587014") +// inputs.Assign(backend.Secret, "y2", "11523897191511824241384532572407048303306774918928882376450136656947192273193") + +// expectedValues := make(map[string]interface{}) +// var expectedu, expectedv fr.Element +// expectedu.SetString("4966531224162673480738068143298314346828081427171102366578720605707900725483") +// expectedv.SetString("18072205942244039714668938595243139985382136665954711533267729308917439031819") +// expectedValues["xg"] = expectedu +// expectedValues["yg"] = expectedv + +// assert.Solved(s, inputs, expectedValues) +// } + +// func TestDouble(t *testing.T) { + +// s := frontend.New() + +// assert := frontend.NewAssert(t) + +// pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) + +// // set curve parameters +// ed := twistededwards.GetEdwardsCurve() + +// // add points in circuit (the method updates the underlying plain points as well) +// pointSnark.Double(&pointSnark, ed) +// pointSnark.X.Tag("xg") +// pointSnark.Y.Tag("yg") + +// inputs := backend.NewAssignment() +// inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") +// inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") + +// expectedValues := make(map[string]interface{}) +// var expectedu, expectedv fr.Element +// expectedu.SetString("10031262171927540148667355526369034398030886437092045105752248699557385197826") +// expectedv.SetString("633281375905621697187330766174974863687049529291089048651929454608812697683") +// expectedValues["xg"] = expectedu +// expectedValues["yg"] = expectedv + +// assert.Solved(s, inputs, expectedValues) +// } + +// func TestScalarMulFixedBase(t *testing.T) { + +// s := frontend.New() + +// assert := frontend.NewAssert(t) + +// // set curve parameters +// ed := twistededwards.GetEdwardsCurve() + +// // set point in the circuit +// pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) + +// // set scalar +// scalar := s.ALLOCATE("28242048") + +// inputs := backend.NewAssignment() +// inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") +// inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") + +// // add points in circuit (the method updates the underlying plain points as well) +// pointSnark.scalarMulFixedBase(&ed.Base, ed, scalar, 25) +// pointSnark.X.Tag("xg") +// pointSnark.Y.Tag("yg") + +// expectedValues := make(map[string]interface{}) +// var expectedu, expectedv fr.Element +// expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") +// expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") +// expectedValues["xg"] = expectedu +// expectedValues["yg"] = expectedv + +// assert.Solved(s, inputs, expectedValues) + +// } + +// func TestScalarMulNonFixedBase(t *testing.T) { + +// s := frontend.New() + +// assert := frontend.NewAssert(t) + +// // set curve parameters +// ed := twistededwards.GetEdwardsCurve() + +// // set point in the circuit +// pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) + +// // set scalar +// scalar := s.ALLOCATE("28242048") + +// inputs := backend.NewAssignment() +// inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") +// inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") + +// // add points in circuit (the method updates the underlying plain points as well) +// pointSnark.scalarMulNonFixedBase(&pointSnark, scalar, ed, 25) +// pointSnark.X.Tag("xg") +// pointSnark.Y.Tag("yg") + +// expectedValues := make(map[string]interface{}) +// var expectedu, expectedv fr.Element +// expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") +// expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") +// expectedValues["xg"] = expectedu +// expectedValues["yg"] = expectedv + +// assert.Solved(s, inputs, expectedValues) + +// } diff --git a/gadgets/errors.go b/gadgets/errors.go new file mode 100644 index 000000000..a406dfada --- /dev/null +++ b/gadgets/errors.go @@ -0,0 +1,23 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package gadgets + +import "errors" + +var ( + ErrUnknownCurve = errors.New("unknown curve id") +) diff --git a/gadgets/hash/mimc/encrypt.go b/gadgets/hash/mimc/encrypt.go index 2a3d78b1b..49e3b973f 100644 --- a/gadgets/hash/mimc/encrypt.go +++ b/gadgets/hash/mimc/encrypt.go @@ -27,16 +27,16 @@ import ( "github.com/consensys/gurvy" ) -var encryptFuncs map[gurvy.ID]func(*frontend.CS, MiMC, *frontend.Constraint, *frontend.Constraint) *frontend.Constraint -var newMimc map[gurvy.ID]func(string) MiMC +var encryptFuncs map[gurvy.ID]func(*frontend.CS, MiMCGadget, *frontend.Constraint, *frontend.Constraint) *frontend.Constraint +var newMimc map[gurvy.ID]func(string) MiMCGadget func init() { - encryptFuncs = make(map[gurvy.ID]func(*frontend.CS, MiMC, *frontend.Constraint, *frontend.Constraint) *frontend.Constraint) + encryptFuncs = make(map[gurvy.ID]func(*frontend.CS, MiMCGadget, *frontend.Constraint, *frontend.Constraint) *frontend.Constraint) encryptFuncs[gurvy.BN256] = encryptBN256 encryptFuncs[gurvy.BLS381] = encryptBLS381 encryptFuncs[gurvy.BLS377] = encryptBLS377 - newMimc = make(map[gurvy.ID]func(string) MiMC) + newMimc = make(map[gurvy.ID]func(string) MiMCGadget) newMimc[gurvy.BN256] = newMimcBN256 newMimc[gurvy.BLS381] = newMimcBLS381 newMimc[gurvy.BLS377] = newMimcBLS377 @@ -45,8 +45,8 @@ func init() { // ------------------------------------------------------------------------------------------------- // constructors -func newMimcBLS377(seed string) MiMC { - res := MiMC{} +func newMimcBLS377(seed string) MiMCGadget { + res := MiMCGadget{} tmp := bls377.NewMiMC(seed) for _, v := range tmp.Params { var cpy big.Int @@ -57,8 +57,8 @@ func newMimcBLS377(seed string) MiMC { return res } -func newMimcBLS381(seed string) MiMC { - res := MiMC{} +func newMimcBLS381(seed string) MiMCGadget { + res := MiMCGadget{} tmp := bls381.NewMiMC(seed) for _, v := range tmp.Params { var cpy big.Int @@ -69,8 +69,8 @@ func newMimcBLS381(seed string) MiMC { return res } -func newMimcBN256(seed string) MiMC { - res := MiMC{} +func newMimcBN256(seed string) MiMCGadget { + res := MiMCGadget{} tmp := bn256.NewMiMC(seed) for _, v := range tmp.Params { var cpy big.Int @@ -85,7 +85,7 @@ func newMimcBN256(seed string) MiMC { // encryptions functions // encryptBn256 of a mimc run expressed as r1cs -func encryptBN256(circuit *frontend.CS, h MiMC, message, key *frontend.Constraint) *frontend.Constraint { +func encryptBN256(circuit *frontend.CS, h MiMCGadget, message, key *frontend.Constraint) *frontend.Constraint { res := message @@ -104,7 +104,7 @@ func encryptBN256(circuit *frontend.CS, h MiMC, message, key *frontend.Constrain } // execution of a mimc run expressed as r1cs -func encryptBLS381(circuit *frontend.CS, h MiMC, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { +func encryptBLS381(circuit *frontend.CS, h MiMCGadget, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { res := message @@ -121,7 +121,7 @@ func encryptBLS381(circuit *frontend.CS, h MiMC, message *frontend.Constraint, k } // encryptBLS377 of a mimc run expressed as r1cs -func encryptBLS377(circuit *frontend.CS, h MiMC, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { +func encryptBLS377(circuit *frontend.CS, h MiMCGadget, message *frontend.Constraint, key *frontend.Constraint) *frontend.Constraint { res := message for i := 0; i < len(h.Params); i++ { tmp := circuit.ADD(res, h.Params[i], key) diff --git a/gadgets/hash/mimc/errors.go b/gadgets/hash/mimc/errors.go deleted file mode 100644 index f441c4365..000000000 --- a/gadgets/hash/mimc/errors.go +++ /dev/null @@ -1,7 +0,0 @@ -package mimc - -import "errors" - -var ( - errUnknownCurve = errors.New("unknown curve id") -) diff --git a/gadgets/hash/mimc/mimc.go b/gadgets/hash/mimc/mimc.go index 668200d70..f84619bfb 100644 --- a/gadgets/hash/mimc/mimc.go +++ b/gadgets/hash/mimc/mimc.go @@ -20,27 +20,29 @@ import ( "math/big" "github.com/consensys/gnark/frontend" + "github.com/consensys/gnark/gadgets" + "github.com/consensys/gurvy" ) -// MiMC gadget -type MiMC struct { +// MiMCGadget contains the params of the Mimc gadget and the curves on which it is implemented +type MiMCGadget struct { Params []big.Int id gurvy.ID } -// NewMiMC returns a MiMC gadget, than can be used in a circuit -func NewMiMC(seed string, id gurvy.ID) (MiMC, error) { +// NewMiMCGadget returns a MiMC gadget, than can be used in a circuit +func NewMiMCGadget(seed string, id gurvy.ID) (MiMCGadget, error) { if constructor, ok := newMimc[id]; ok { return constructor(seed), nil } - return MiMC{}, errUnknownCurve + return MiMCGadget{}, gadgets.ErrUnknownCurve } // Hash hash (in r1cs form) using Miyaguchi–Preneel: // https://en.wikipedia.org/wiki/One-way_compression_function // The XOR operation is replaced by field addition -func (h MiMC) Hash(circuit *frontend.CS, data ...*frontend.Constraint) *frontend.Constraint { +func (h MiMCGadget) Hash(circuit *frontend.CS, data ...*frontend.Constraint) *frontend.Constraint { digest := circuit.ALLOCATE(0) diff --git a/gadgets/hash/mimc/mimc_test.go b/gadgets/hash/mimc/mimc_test.go index ebb65e397..75a22ee7b 100644 --- a/gadgets/hash/mimc/mimc_test.go +++ b/gadgets/hash/mimc/mimc_test.go @@ -53,7 +53,7 @@ func TestMimcBN256(t *testing.T) { databn256.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") // running MiMC (R1CS) - mimcGadget, err := NewMiMC("seed", gurvy.BN256) + mimcGadget, err := NewMiMCGadget("seed", gurvy.BN256) if err != nil { t.Fatal(err) } @@ -90,7 +90,7 @@ func TestMimcBLS381(t *testing.T) { databls381.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") // running MiMC (R1CS) - mimcGadget, err := NewMiMC("seed", gurvy.BLS381) + mimcGadget, err := NewMiMCGadget("seed", gurvy.BLS381) if err != nil { t.Fatal(err) } @@ -127,7 +127,7 @@ func TestMimcBLS377(t *testing.T) { databls377.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") // running MiMC (R1CS) - mimcGadget, err := NewMiMC("seed", gurvy.BLS377) + mimcGadget, err := NewMiMCGadget("seed", gurvy.BLS377) if err != nil { t.Fatal(err) } diff --git a/go.mod b/go.mod index 13edcb0ce..31e67f123 100644 --- a/go.mod +++ b/go.mod @@ -4,7 +4,7 @@ go 1.14 require ( github.com/consensys/bavard v0.1.1 - github.com/consensys/gurvy v0.1.0 + github.com/consensys/gurvy v0.1.2-0.20200409125542-5a798b9a0bb3 github.com/pkg/profile v1.4.0 github.com/spf13/cobra v0.0.7 github.com/stretchr/testify v1.5.1 diff --git a/go.sum b/go.sum index 0cbd499f2..977a9330b 100644 --- a/go.sum +++ b/go.sum @@ -16,12 +16,18 @@ github.com/consensys/bavard v0.1.1/go.mod h1:ffZkLPNQSN3E6u+zpArQSleJ/lsraMwKPCH github.com/consensys/goff v0.1.1-0.20200318175900-2b9e7b66b91f h1:oClf8ebLCcoxQXeGUBje1Hok4n4y+XLwbrV2i538d/8= github.com/consensys/goff v0.1.1-0.20200318175900-2b9e7b66b91f/go.mod h1:o2GQlBqSwG9JvC42mpcJ40CwoJxp+rmxWxSKQv+dCW4= github.com/consensys/goff v0.2.0/go.mod h1:RCji/8mD0qP8UZJCtEG4NEWD6JPwN7S4KBGvRXkVMgw= +github.com/consensys/goff v0.2.1 h1:sBdsFEetlPpXnZJR0WtZaU6X+dDCejbHqG8M21WJtk8= +github.com/consensys/goff v0.2.1/go.mod h1:CsKD9nM1/fD0gqJs0vRCyQ/wocVjex+wa3mVEjC6h+s= github.com/consensys/gurvy v0.0.1 h1:Yihv5yVLb0N0FQiA0qjtd7RH1PrybFNN/irEvKufJME= github.com/consensys/gurvy v0.0.1/go.mod h1:7MscQ5ryPPSnUrlIwyciwqcAiAhj6S9Nx0e/XkB/Q74= github.com/consensys/gurvy v0.0.2-0.20200403081647-771aa8c7f916 h1:C/5jZGr4soHBiF5gOrpKb/oCHDH+bKd8WUzm4lIXdrw= github.com/consensys/gurvy v0.0.2-0.20200403081647-771aa8c7f916/go.mod h1:7MscQ5ryPPSnUrlIwyciwqcAiAhj6S9Nx0e/XkB/Q74= github.com/consensys/gurvy v0.1.0 h1:LPtGZfeJ2nHw+OtErgLR8v3l7YxL2CRTi0kB7RqDkwE= github.com/consensys/gurvy v0.1.0/go.mod h1:lF6umMB+8TC72X/IiaR5AvCwVNsYSTVYHY1fqRwWyT4= +github.com/consensys/gurvy v0.1.1 h1:FSSZORFUD7c+E15SdDRLMV3FTUTekgnnk8vigvHL9B8= +github.com/consensys/gurvy v0.1.1/go.mod h1:bykHMWpecS6S3vcQ9sB60J2BdqphOELbsjWh/qhOjus= +github.com/consensys/gurvy v0.1.2-0.20200409125542-5a798b9a0bb3 h1:Q444rjlm3tygcQoRtU+qFqAYzc1r2dcYCKHvpxMOE6Q= +github.com/consensys/gurvy v0.1.2-0.20200409125542-5a798b9a0bb3/go.mod h1:bykHMWpecS6S3vcQ9sB60J2BdqphOELbsjWh/qhOjus= github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk= github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= @@ -33,6 +39,7 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ= github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no= +github.com/dterei/gotsc v0.0.0-20160722215413-e78f872945c6/go.mod h1:P4N3xGqi52atrdlMBXpsAGTqRnLgZ8uDhlkQ7HEYGgo= github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I= github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04= diff --git a/internal/generators/backend/template/zkpschemes/groth16_utils.go b/internal/generators/backend/template/zkpschemes/groth16_utils.go index 8fec9dfd7..161d22a37 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_utils.go +++ b/internal/generators/backend/template/zkpschemes/groth16_utils.go @@ -74,27 +74,7 @@ func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution bac } // ensure expected Values are computed correctly - { - // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs - var root fr.Element - fftDomain := backend_{{toLower .Curve}}.NewDomain(root, backend_{{toLower .Curve}}.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) - - for k, v := range expectedValues { - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> ({{toLower .Curve}}) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> ({{toLower .Curve}}) does not have the expected value") - - } - - } + assert.CorrectExecution(r1cs, solution, expectedValues) // prover proof, err := Prove(r1cs, &pk, solution) @@ -114,4 +94,26 @@ func (assert *Assert) Solved(r1cs *backend_{{toLower .Curve}}.R1CS, solution bac assert.True(isValid, "unexpected Verify(proof) result") } } + +// CorrectExecution Verifies that the expected solution matches the solved variables +func (assert *Assert) CorrectExecution(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + // TODO Solve should not require to create by hand a, b, c etc... it should return it, super annoying to create variables before solving the r1cs + var root fr.Element + fftDomain := backend_{{toLower .Curve}}.NewDomain(root, backend_{{toLower .Curve}}.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + res, _ := r1cs.Inspect(wireValues) + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_{{toLower .Curve}}) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_{{toLower .Curve}}) does not have the expected value") + + } +} ` From f898a7c563c8232b40257f4ba3ab2bc3e7f36531 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Fri, 10 Apr 2020 18:56:25 +0200 Subject: [PATCH 12/19] eddsa (cryptolib) is cleaned up, code generation for eddsa, tests for twistedEdwards gadgets with bigInt r1cs OK --- backend/bls377/groth16/utils.go | 10 +- backend/bls381/groth16/utils.go | 10 +- backend/bn256/groth16/utils.go | 10 +- cryptolib/internal/generator/generator.go | 49 ++++ cryptolib/internal/main.go | 32 +++ cryptolib/internal/meta/metadata.go | 7 + cryptolib/internal/template/eddsa.go | 183 +++++++++++++++ cryptolib/internal/template/test_eddsa.go | 52 +++++ cryptolib/signature/eddsa/bls381/eddsa.go | 119 +++++----- .../signature/eddsa/bls381/eddsa_test.go | 36 +-- cryptolib/signature/eddsa/bn256/eddsa.go | 119 +++++----- cryptolib/signature/eddsa/bn256/eddsa_test.go | 36 +-- gadgets/algebra/twisted_edwards/curve.go | 10 +- gadgets/algebra/twisted_edwards/point.go | 187 ++++++++------- .../twisted_edwards/twisted_edwards_test.go | 220 ++++++++++-------- gadgets/hash/mimc/mimc_test.go | 6 +- gadgets/signature/eddsa/eddsa.go.backup | 1 + .../template/zkpschemes/groth16_utils.go | 10 +- 18 files changed, 737 insertions(+), 360 deletions(-) create mode 100644 cryptolib/internal/generator/generator.go create mode 100644 cryptolib/internal/main.go create mode 100644 cryptolib/internal/meta/metadata.go create mode 100644 cryptolib/internal/template/eddsa.go create mode 100644 cryptolib/internal/template/test_eddsa.go diff --git a/backend/bls377/groth16/utils.go b/backend/bls377/groth16/utils.go index e4d21947d..53e1e43f2 100644 --- a/backend/bls377/groth16/utils.go +++ b/backend/bls377/groth16/utils.go @@ -124,13 +124,15 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bls377.R1CS, solution backe b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) + err := r1cs.Solve(solution, a, b, c, wireValues) + assert.Nil(err, "Solving the constraint system with correct inputs should not output an error") + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") for k, v := range expectedValues { val, ok := res[k] assert.True(ok, "Variable to test <"+k+"> (backend_bls377) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls377) does not have the expected value") - + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls377) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } diff --git a/backend/bls381/groth16/utils.go b/backend/bls381/groth16/utils.go index c6ac8f411..1f4dc85c7 100644 --- a/backend/bls381/groth16/utils.go +++ b/backend/bls381/groth16/utils.go @@ -124,13 +124,15 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bls381.R1CS, solution backe b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) + err := r1cs.Solve(solution, a, b, c, wireValues) + assert.Nil(err, "Solving the constraint system with correct inputs should not output an error") + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") for k, v := range expectedValues { val, ok := res[k] assert.True(ok, "Variable to test <"+k+"> (backend_bls381) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls381) does not have the expected value") - + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls381) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go index 0c41cd392..b5dc8155d 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/utils.go @@ -124,13 +124,15 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bn256.R1CS, solution backen b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) + err := r1cs.Solve(solution, a, b, c, wireValues) + assert.Nil(err, "Solving the constraint system with correct inputs should not output an error") + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") for k, v := range expectedValues { val, ok := res[k] assert.True(ok, "Variable to test <"+k+"> (backend_bn256) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bn256) does not have the expected value") - + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bn256) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } diff --git a/cryptolib/internal/generator/generator.go b/cryptolib/internal/generator/generator.go new file mode 100644 index 000000000..e1a02a8ca --- /dev/null +++ b/cryptolib/internal/generator/generator.go @@ -0,0 +1,49 @@ +package generator + +import ( + "fmt" + "strings" + + "github.com/consensys/bavard" + "github.com/consensys/gnark/cryptolib/internal/meta" + "github.com/consensys/gnark/cryptolib/internal/template" +) + +// Generate template generator +func Generate(d meta.Data) error { + + if !strings.HasSuffix(d.Path, "/") { + d.Path += "/" + } + fmt.Println() + fmt.Println("generating crpyptolib for ", d.Curve) + fmt.Println() + + { + // generate eddsa + src := []string{ + template.EddsaTemplate, + } + if err := bavard.Generate(d.Path+"eddsa.go", src, d, + bavard.Package("eddsa"), + bavard.Apache2("ConsenSys AG", 2020), + bavard.GeneratedBy("gnark/cryptolib/internal/generator"), + ); err != nil { + return err + } + } + { + // generate eddsa tests + src := []string{ + template.EddsaTest, + } + if err := bavard.Generate(d.Path+"eddsa_test.go", src, d, + bavard.Package("eddsa"), + bavard.Apache2("ConsenSys AG", 2020), + bavard.GeneratedBy("gnark/cryptolib/internal/generator"), + ); err != nil { + return err + } + } + return nil +} diff --git a/cryptolib/internal/main.go b/cryptolib/internal/main.go new file mode 100644 index 000000000..8e1281e3f --- /dev/null +++ b/cryptolib/internal/main.go @@ -0,0 +1,32 @@ +package main + +import ( + "os" + + "github.com/consensys/gnark/cryptolib/internal/generator" + "github.com/consensys/gnark/cryptolib/internal/meta" +) + +//go:generate go run -tags debug main.go +func main() { + + bls381 := meta.Data{ + Curve: "BLS381", + Path: "../signature/eddsa/bls381/", + } + + bn256 := meta.Data{ + Curve: "BN256", + Path: "../signature/eddsa/bn256/", + } + + data := []meta.Data{bls381, bn256} + + for _, d := range data { + if err := os.MkdirAll(d.Path, 0700); err != nil { + panic(err) + } + generator.Generate(d) + } + +} diff --git a/cryptolib/internal/meta/metadata.go b/cryptolib/internal/meta/metadata.go new file mode 100644 index 000000000..624cf6a39 --- /dev/null +++ b/cryptolib/internal/meta/metadata.go @@ -0,0 +1,7 @@ +package meta + +// Data meta data for template generation +type Data struct { + Curve string + Path string +} diff --git a/cryptolib/internal/template/eddsa.go b/cryptolib/internal/template/eddsa.go new file mode 100644 index 000000000..fe0c01459 --- /dev/null +++ b/cryptolib/internal/template/eddsa.go @@ -0,0 +1,183 @@ +package template + +const EddsaTemplate = ` + +import ( + "bytes" + "encoding/binary" + "errors" + "math/big" + + "github.com/consensys/gnark/cryptolib/hash/mimc/{{toLower .Curve}}" + "github.com/consensys/gurvy/{{toLower .Curve}}/fr" + "github.com/consensys/gurvy/{{toLower .Curve}}/twistededwards" + "golang.org/x/crypto/blake2b" +) + +var ErrNotOnCurve = errors.New("point not on curve") + +// Signature represents an eddsa signature +// cf https://en.wikipedia.org/wiki/EdDSA for notation +type Signature struct { + R twistededwards.Point + S fr.Element // not in Montgomery form +} + +// PublicKey eddsa signature object +// cf https://en.wikipedia.org/wiki/EdDSA for notation +type PublicKey struct { + A twistededwards.Point +} + +// PrivateKey private key of an eddsa instance +type privateKey struct { + randSrc [32]byte // randomizer (non need to convert it when doing scalar mul --> random = H(randSrc,msg)) + scalar fr.Element // secret scalar (non need to convert it when doing scalar mul) +} + +// Eddsa stores parameters to generate and verify eddsa signature +type Eddsa struct { + priv privateKey + pub PublicKey + curveParams *twistededwards.CurveParams +} + +// New creates an instance of eddsa +func New(seed [32]byte, c twistededwards.CurveParams) Eddsa { + + res := Eddsa{} + + var tmp big.Int + + h := blake2b.Sum512(seed[:]) + for i := 0; i < 32; i++ { + res.priv.randSrc[i] = h[i+32] + } + + // prune the key + // https://tools.ietf.org/html/rfc8032#section-5.1.5, key generation + h[0] &= 0xF8 + h[31] &= 0x7F + h[31] |= 0x40 + + // reverse first bytes because setBytes interpret stream as big endian + // but in eddsa specs s is the first 32 bytes in little endian + for i, j := 0, 32; i < j; i, j = i+1, j-1 { + h[i], h[j] = h[j], h[i] + } + tmp.SetBytes(h[:32]) + res.priv.scalar.SetBigInt(&tmp).FromMont() + res.curveParams = &c + + res.pub.A.ScalarMul(&c.Base, c, res.priv.scalar) + + return res +} + +// Sign sign a message (in Montgomery form) +// cf https://en.wikipedia.org/wiki/EdDSA for the notations +// Eddsa is supposed to be built upon Edwards (or twisted Edwards) curves having 256 bits group size and cofactor=4 or 8 +func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { + + res := Signature{} + + var tmp big.Int + var randScalar fr.Element + + // randSrc = privKey.randSrc || msg (-> message = MSB message .. LSB message) + randSrc := make([]byte, 64) + for i, v := range eddsaObj.priv.randSrc { + randSrc[i] = v + } + buf := new(bytes.Buffer) + err := binary.Write(buf, binary.BigEndian, message) + if err != nil { + return res, err + } + bufb := buf.Bytes() + for i := 0; i < 32; i++ { + randSrc[32+i] = bufb[i] + } + + // randBytes = H(randSrc) + randBytes := blake2b.Sum512(randSrc[:]) + tmp.SetBytes(randBytes[:32]) + randScalar.SetBigInt(&tmp).FromMont() + + // compute R = randScalar*Base + res.R.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, randScalar) + if !res.R.IsOnCurve(*eddsaObj.curveParams) { + return Signature{}, ErrNotOnCurve + } + + // compute H(R, A, M), all parameters in data are in Montgomery form + data := []fr.Element{ + res.R.X, + res.R.Y, + eddsaObj.pub.A.X, + eddsaObj.pub.A.Y, + message, + } + + hram := {{toLower .Curve}}.NewMiMC("seed").Hash(data...) + hram.FromMont() + + // Compute s = randScalarInt + H(R,A,M)*S + // going with big int to do ops mod curve order + var hramInt, sInt, randScalarInt big.Int + hram.ToBigInt(&hramInt) + eddsaObj.priv.scalar.ToBigInt(&sInt) + randScalar.ToBigInt(&randScalarInt) + hramInt.Mul(&hramInt, &sInt). + Add(&hramInt, &randScalarInt). + Mod(&hramInt, &eddsaObj.curveParams.Order) + res.S.SetBigInt(&hramInt).FromMont() + + return res, nil +} + +// Verify verifies an eddsa signature +// cf https://en.wikipedia.org/wiki/EdDSA +func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { + + // verify that pubKey and R are on the curve + if !eddsaObj.pub.A.IsOnCurve(*eddsaObj.curveParams) { + return false, ErrNotOnCurve + } + + // compute H(R, A, M), all parameters in data are in Montgomery form + data := []fr.Element{ + sig.R.X, + sig.R.Y, + eddsaObj.pub.A.X, + eddsaObj.pub.A.Y, + message, + } + hram := {{toLower .Curve}}.NewMiMC("seed").Hash(data...) + hram.FromMont() + + // lhs = cofactor*S*Base + var lhs twistededwards.Point + lhs.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, sig.S). + ScalarMul(&lhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) + + if !lhs.IsOnCurve(*eddsaObj.curveParams) { + return false, ErrNotOnCurve + } + + // rhs = cofactor*(R + H(R,A,M)*A) + var rhs twistededwards.Point + rhs.ScalarMul(&eddsaObj.pub.A, *eddsaObj.curveParams, hram). + Add(&rhs, &sig.R, *eddsaObj.curveParams). + ScalarMul(&rhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) + if !rhs.IsOnCurve(*eddsaObj.curveParams) { + return false, ErrNotOnCurve + } + + // verifies that cofactor*S*Base=cofactor*(R + H(R,A,M)*A) + if !lhs.X.Equal(&rhs.X) || !lhs.Y.Equal(&rhs.Y) { + return false, nil + } + return true, nil +} +` diff --git a/cryptolib/internal/template/test_eddsa.go b/cryptolib/internal/template/test_eddsa.go new file mode 100644 index 000000000..2fdca4124 --- /dev/null +++ b/cryptolib/internal/template/test_eddsa.go @@ -0,0 +1,52 @@ +package template + +const EddsaTest = ` +import ( + "testing" + + "github.com/consensys/gurvy/{{toLower .Curve}}/fr" + "github.com/consensys/gurvy/{{toLower .Curve}}/twistededwards" +) + +func TestEddsa(t *testing.T) { + + edcurve := twistededwards.GetEdwardsCurve() + + var seed [32]byte + s := []byte("eddsa") + for i, v := range s { + seed[i] = v + } + + signer := New(seed, edcurve) + + var msg fr.Element + msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") + + signature, err := signer.Sign(msg) + if err != nil { + t.Fatal(err) + } + + // verifies correct msg + res, err := signer.Verify(signature, msg) + if err != nil { + t.Fatal(err) + } + if !res { + t.Fatal("Verifiy correct signature should return true") + } + + // verifies wrong msg + msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035979") + res, err = signer.Verify(signature, msg) + if err != nil { + t.Fatal(err) + } + if res { + t.Fatal("Verfiy wrong signature should be false") + } + +} + +` diff --git a/cryptolib/signature/eddsa/bls381/eddsa.go b/cryptolib/signature/eddsa/bls381/eddsa.go index 408395e45..13a9ffd43 100644 --- a/cryptolib/signature/eddsa/bls381/eddsa.go +++ b/cryptolib/signature/eddsa/bls381/eddsa.go @@ -1,18 +1,18 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT package eddsa @@ -30,19 +30,11 @@ import ( var ErrNotOnCurve = errors.New("point not on curve") -// PrivateKey private key of an eddsa instance -type PrivateKey struct { - randSrc [32]byte // randomizer (non need to convert it when doing scalar mul --> random = H(randSrc,msg)) - scalar fr.Element // secret scalar (non need to convert it when doing scalar mul) - EdCurve *twistededwards.CurveParams -} - // Signature represents an eddsa signature // cf https://en.wikipedia.org/wiki/EdDSA for notation type Signature struct { - R twistededwards.Point - S fr.Element // not in Montgomery form - EdCurve *twistededwards.CurveParams + R twistededwards.Point + S fr.Element // not in Montgomery form } // PublicKey eddsa signature object @@ -51,16 +43,29 @@ type PublicKey struct { A twistededwards.Point } +// PrivateKey private key of an eddsa instance +type privateKey struct { + randSrc [32]byte // randomizer (non need to convert it when doing scalar mul --> random = H(randSrc,msg)) + scalar fr.Element // secret scalar (non need to convert it when doing scalar mul) +} + +// Eddsa stores parameters to generate and verify eddsa signature +type Eddsa struct { + priv privateKey + pub PublicKey + curveParams *twistededwards.CurveParams +} + // New creates an instance of eddsa -func New(seed [32]byte, c twistededwards.CurveParams) (PrivateKey, PublicKey) { +func New(seed [32]byte, c twistededwards.CurveParams) Eddsa { - var value big.Int - var pub PublicKey - var priv PrivateKey + res := Eddsa{} + + var tmp big.Int h := blake2b.Sum512(seed[:]) for i := 0; i < 32; i++ { - priv.randSrc[i] = h[i+32] + res.priv.randSrc[i] = h[i+32] } // prune the key @@ -74,33 +79,28 @@ func New(seed [32]byte, c twistededwards.CurveParams) (PrivateKey, PublicKey) { for i, j := 0, 32; i < j; i, j = i+1, j-1 { h[i], h[j] = h[j], h[i] } - value.SetBytes(h[:32]) - priv.scalar.SetBigInt(&value).FromMont() - priv.EdCurve = &c + tmp.SetBytes(h[:32]) + res.priv.scalar.SetBigInt(&tmp).FromMont() + res.curveParams = &c - pub.A.ScalarMul(&c.Base, c, priv.scalar) + res.pub.A.ScalarMul(&c.Base, c, res.priv.scalar) - return priv, pub + return res } // Sign sign a message (in Montgomery form) // cf https://en.wikipedia.org/wiki/EdDSA for the notations // Eddsa is supposed to be built upon Edwards (or twisted Edwards) curves having 256 bits group size and cofactor=4 or 8 -func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signature, error) { +func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { res := Signature{} - // check that base point is on the curve - if !privateKey.EdCurve.Base.IsOnCurve(*privateKey.EdCurve) { - return res, ErrNotOnCurve - } - var tmp big.Int var randScalar fr.Element // randSrc = privKey.randSrc || msg (-> message = MSB message .. LSB message) randSrc := make([]byte, 64) - for i, v := range privateKey.randSrc { + for i, v := range eddsaObj.priv.randSrc { randSrc[i] = v } buf := new(bytes.Buffer) @@ -119,8 +119,8 @@ func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signa randScalar.SetBigInt(&tmp).FromMont() // compute R = randScalar*Base - res.R.ScalarMul(&privateKey.EdCurve.Base, *privateKey.EdCurve, randScalar) - if !res.R.IsOnCurve(*privateKey.EdCurve) { + res.R.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, randScalar) + if !res.R.IsOnCurve(*eddsaObj.curveParams) { return Signature{}, ErrNotOnCurve } @@ -128,8 +128,8 @@ func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signa data := []fr.Element{ res.R.X, res.R.Y, - publicKey.A.X, - publicKey.A.Y, + eddsaObj.pub.A.X, + eddsaObj.pub.A.Y, message, } @@ -140,23 +140,22 @@ func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signa // going with big int to do ops mod curve order var hramInt, sInt, randScalarInt big.Int hram.ToBigInt(&hramInt) - privateKey.scalar.ToBigInt(&sInt) + eddsaObj.priv.scalar.ToBigInt(&sInt) randScalar.ToBigInt(&randScalarInt) hramInt.Mul(&hramInt, &sInt). Add(&hramInt, &randScalarInt). - Mod(&hramInt, &privateKey.EdCurve.Order) + Mod(&hramInt, &eddsaObj.curveParams.Order) res.S.SetBigInt(&hramInt).FromMont() - res.EdCurve = privateKey.EdCurve return res, nil } // Verify verifies an eddsa signature // cf https://en.wikipedia.org/wiki/EdDSA -func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { +func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { // verify that pubKey and R are on the curve - if !pubKey.A.IsOnCurve(*sig.EdCurve) { + if !eddsaObj.pub.A.IsOnCurve(*eddsaObj.curveParams) { return false, ErrNotOnCurve } @@ -164,8 +163,8 @@ func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { data := []fr.Element{ sig.R.X, sig.R.Y, - pubKey.A.X, - pubKey.A.Y, + eddsaObj.pub.A.X, + eddsaObj.pub.A.Y, message, } hram := bls381.NewMiMC("seed").Hash(data...) @@ -173,19 +172,19 @@ func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { // lhs = cofactor*S*Base var lhs twistededwards.Point - lhs.ScalarMul(&sig.EdCurve.Base, *sig.EdCurve, sig.S). - ScalarMul(&lhs, *sig.EdCurve, sig.EdCurve.Cofactor) + lhs.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, sig.S). + ScalarMul(&lhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) - if !lhs.IsOnCurve(*sig.EdCurve) { + if !lhs.IsOnCurve(*eddsaObj.curveParams) { return false, ErrNotOnCurve } // rhs = cofactor*(R + H(R,A,M)*A) var rhs twistededwards.Point - rhs.ScalarMul(&pubKey.A, *sig.EdCurve, hram). - Add(&rhs, &sig.R, *sig.EdCurve). - ScalarMul(&rhs, *sig.EdCurve, sig.EdCurve.Cofactor) - if !rhs.IsOnCurve(*sig.EdCurve) { + rhs.ScalarMul(&eddsaObj.pub.A, *eddsaObj.curveParams, hram). + Add(&rhs, &sig.R, *eddsaObj.curveParams). + ScalarMul(&rhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) + if !rhs.IsOnCurve(*eddsaObj.curveParams) { return false, ErrNotOnCurve } diff --git a/cryptolib/signature/eddsa/bls381/eddsa_test.go b/cryptolib/signature/eddsa/bls381/eddsa_test.go index 69905338f..cb715c2f1 100644 --- a/cryptolib/signature/eddsa/bls381/eddsa_test.go +++ b/cryptolib/signature/eddsa/bls381/eddsa_test.go @@ -1,18 +1,18 @@ -/* -Copyright © 2020 ConsenSys +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ +// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT package eddsa @@ -33,18 +33,18 @@ func TestEddsa(t *testing.T) { seed[i] = v } - privKey, pubKey := New(seed, edcurve) + signer := New(seed, edcurve) var msg fr.Element msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") - signedMsg, err := Sign(privKey, pubKey, msg) + signature, err := signer.Sign(msg) if err != nil { t.Fatal(err) } // verifies correct msg - res, err := Verify(pubKey, signedMsg, msg) + res, err := signer.Verify(signature, msg) if err != nil { t.Fatal(err) } @@ -54,7 +54,7 @@ func TestEddsa(t *testing.T) { // verifies wrong msg msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035979") - res, err = Verify(pubKey, signedMsg, msg) + res, err = signer.Verify(signature, msg) if err != nil { t.Fatal(err) } diff --git a/cryptolib/signature/eddsa/bn256/eddsa.go b/cryptolib/signature/eddsa/bn256/eddsa.go index bcd0fb98d..d6e284e55 100644 --- a/cryptolib/signature/eddsa/bn256/eddsa.go +++ b/cryptolib/signature/eddsa/bn256/eddsa.go @@ -1,18 +1,18 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT package eddsa @@ -30,19 +30,11 @@ import ( var ErrNotOnCurve = errors.New("point not on curve") -// PrivateKey private key of an eddsa instance -type PrivateKey struct { - randSrc [32]byte // randomizer (non need to convert it when doing scalar mul --> random = H(randSrc,msg)) - scalar fr.Element // secret scalar (non need to convert it when doing scalar mul) - EdCurve *twistededwards.CurveParams -} - // Signature represents an eddsa signature // cf https://en.wikipedia.org/wiki/EdDSA for notation type Signature struct { - R twistededwards.Point - S fr.Element // not in Montgomery form - EdCurve *twistededwards.CurveParams + R twistededwards.Point + S fr.Element // not in Montgomery form } // PublicKey eddsa signature object @@ -51,16 +43,29 @@ type PublicKey struct { A twistededwards.Point } +// PrivateKey private key of an eddsa instance +type privateKey struct { + randSrc [32]byte // randomizer (non need to convert it when doing scalar mul --> random = H(randSrc,msg)) + scalar fr.Element // secret scalar (non need to convert it when doing scalar mul) +} + +// Eddsa stores parameters to generate and verify eddsa signature +type Eddsa struct { + priv privateKey + pub PublicKey + curveParams *twistededwards.CurveParams +} + // New creates an instance of eddsa -func New(seed [32]byte, c twistededwards.CurveParams) (PrivateKey, PublicKey) { +func New(seed [32]byte, c twistededwards.CurveParams) Eddsa { - var value big.Int - var pub PublicKey - var priv PrivateKey + res := Eddsa{} + + var tmp big.Int h := blake2b.Sum512(seed[:]) for i := 0; i < 32; i++ { - priv.randSrc[i] = h[i+32] + res.priv.randSrc[i] = h[i+32] } // prune the key @@ -74,33 +79,28 @@ func New(seed [32]byte, c twistededwards.CurveParams) (PrivateKey, PublicKey) { for i, j := 0, 32; i < j; i, j = i+1, j-1 { h[i], h[j] = h[j], h[i] } - value.SetBytes(h[:32]) - priv.scalar.SetBigInt(&value).FromMont() - priv.EdCurve = &c + tmp.SetBytes(h[:32]) + res.priv.scalar.SetBigInt(&tmp).FromMont() + res.curveParams = &c - pub.A.ScalarMul(&c.Base, c, priv.scalar) + res.pub.A.ScalarMul(&c.Base, c, res.priv.scalar) - return priv, pub + return res } // Sign sign a message (in Montgomery form) // cf https://en.wikipedia.org/wiki/EdDSA for the notations // Eddsa is supposed to be built upon Edwards (or twisted Edwards) curves having 256 bits group size and cofactor=4 or 8 -func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signature, error) { +func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { res := Signature{} - // check that base point is on the curve - if !privateKey.EdCurve.Base.IsOnCurve(*privateKey.EdCurve) { - return res, ErrNotOnCurve - } - var tmp big.Int var randScalar fr.Element // randSrc = privKey.randSrc || msg (-> message = MSB message .. LSB message) randSrc := make([]byte, 64) - for i, v := range privateKey.randSrc { + for i, v := range eddsaObj.priv.randSrc { randSrc[i] = v } buf := new(bytes.Buffer) @@ -119,8 +119,8 @@ func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signa randScalar.SetBigInt(&tmp).FromMont() // compute R = randScalar*Base - res.R.ScalarMul(&privateKey.EdCurve.Base, *privateKey.EdCurve, randScalar) - if !res.R.IsOnCurve(*privateKey.EdCurve) { + res.R.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, randScalar) + if !res.R.IsOnCurve(*eddsaObj.curveParams) { return Signature{}, ErrNotOnCurve } @@ -128,8 +128,8 @@ func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signa data := []fr.Element{ res.R.X, res.R.Y, - publicKey.A.X, - publicKey.A.Y, + eddsaObj.pub.A.X, + eddsaObj.pub.A.Y, message, } @@ -140,23 +140,22 @@ func Sign(privateKey PrivateKey, publicKey PublicKey, message fr.Element) (Signa // going with big int to do ops mod curve order var hramInt, sInt, randScalarInt big.Int hram.ToBigInt(&hramInt) - privateKey.scalar.ToBigInt(&sInt) + eddsaObj.priv.scalar.ToBigInt(&sInt) randScalar.ToBigInt(&randScalarInt) hramInt.Mul(&hramInt, &sInt). Add(&hramInt, &randScalarInt). - Mod(&hramInt, &privateKey.EdCurve.Order) + Mod(&hramInt, &eddsaObj.curveParams.Order) res.S.SetBigInt(&hramInt).FromMont() - res.EdCurve = privateKey.EdCurve return res, nil } // Verify verifies an eddsa signature // cf https://en.wikipedia.org/wiki/EdDSA -func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { +func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { // verify that pubKey and R are on the curve - if !pubKey.A.IsOnCurve(*sig.EdCurve) { + if !eddsaObj.pub.A.IsOnCurve(*eddsaObj.curveParams) { return false, ErrNotOnCurve } @@ -164,8 +163,8 @@ func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { data := []fr.Element{ sig.R.X, sig.R.Y, - pubKey.A.X, - pubKey.A.Y, + eddsaObj.pub.A.X, + eddsaObj.pub.A.Y, message, } hram := bn256.NewMiMC("seed").Hash(data...) @@ -173,19 +172,19 @@ func Verify(pubKey PublicKey, sig Signature, message fr.Element) (bool, error) { // lhs = cofactor*S*Base var lhs twistededwards.Point - lhs.ScalarMul(&sig.EdCurve.Base, *sig.EdCurve, sig.S). - ScalarMul(&lhs, *sig.EdCurve, sig.EdCurve.Cofactor) + lhs.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, sig.S). + ScalarMul(&lhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) - if !lhs.IsOnCurve(*sig.EdCurve) { + if !lhs.IsOnCurve(*eddsaObj.curveParams) { return false, ErrNotOnCurve } // rhs = cofactor*(R + H(R,A,M)*A) var rhs twistededwards.Point - rhs.ScalarMul(&pubKey.A, *sig.EdCurve, hram). - Add(&rhs, &sig.R, *sig.EdCurve). - ScalarMul(&rhs, *sig.EdCurve, sig.EdCurve.Cofactor) - if !rhs.IsOnCurve(*sig.EdCurve) { + rhs.ScalarMul(&eddsaObj.pub.A, *eddsaObj.curveParams, hram). + Add(&rhs, &sig.R, *eddsaObj.curveParams). + ScalarMul(&rhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) + if !rhs.IsOnCurve(*eddsaObj.curveParams) { return false, ErrNotOnCurve } diff --git a/cryptolib/signature/eddsa/bn256/eddsa_test.go b/cryptolib/signature/eddsa/bn256/eddsa_test.go index 92684feff..befb82534 100644 --- a/cryptolib/signature/eddsa/bn256/eddsa_test.go +++ b/cryptolib/signature/eddsa/bn256/eddsa_test.go @@ -1,18 +1,18 @@ -/* -Copyright © 2020 ConsenSys +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ +// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT package eddsa @@ -33,18 +33,18 @@ func TestEddsa(t *testing.T) { seed[i] = v } - privKey, pubKey := New(seed, edcurve) + signer := New(seed, edcurve) var msg fr.Element msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") - signedMsg, err := Sign(privKey, pubKey, msg) + signature, err := signer.Sign(msg) if err != nil { t.Fatal(err) } // verifies correct msg - res, err := Verify(pubKey, signedMsg, msg) + res, err := signer.Verify(signature, msg) if err != nil { t.Fatal(err) } @@ -54,7 +54,7 @@ func TestEddsa(t *testing.T) { // verifies wrong msg msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035979") - res, err = Verify(pubKey, signedMsg, msg) + res, err = signer.Verify(signature, msg) if err != nil { t.Fatal(err) } diff --git a/gadgets/algebra/twisted_edwards/curve.go b/gadgets/algebra/twisted_edwards/curve.go index c1873d638..815da73f9 100644 --- a/gadgets/algebra/twisted_edwards/curve.go +++ b/gadgets/algebra/twisted_edwards/curve.go @@ -29,7 +29,7 @@ import ( // EdCurveGadget stores the info on the chosen edwards curve type EdCurveGadget struct { - A, D, Cofactor, Order, BaseX, BaseY big.Int + A, D, Cofactor, Order, BaseX, BaseY, Modulus big.Int } var newTwistedEdwards map[gurvy.ID]func(*frontend.CS) EdCurveGadget @@ -42,8 +42,8 @@ func init() { // NewEdCurveGadget returns an Edwards curve parameters func NewEdCurveGadget(circuit *frontend.CS, id gurvy.ID) (EdCurveGadget, error) { - if val, ok := newTwistedEdwards[id]; ok { - return val(circuit), nil + if constructor, ok := newTwistedEdwards[id]; ok { + return constructor(circuit), nil } return EdCurveGadget{}, gadgets.ErrUnknownCurve } @@ -63,6 +63,8 @@ func newEdBN256(circuit *frontend.CS) EdCurveGadget { BaseX: backend.FromInterface(edcurve.Base.X), BaseY: backend.FromInterface(edcurve.Base.Y), } + // TODO use the modulus soon-to-be exported by goff + res.Modulus.SetString("21888242871839275222246405745257275088548364400416034343698204186575808495617", 10) return res @@ -80,6 +82,8 @@ func newEdBLS381(circuit *frontend.CS) EdCurveGadget { BaseX: backend.FromInterface(edcurve.Base.X), BaseY: backend.FromInterface(edcurve.Base.Y), } + // TODO use the modulus soon-to-be exported by goff + res.Modulus.SetString("52435875175126190479447740508185965837690552500527637822603658699938581184513", 10) return res diff --git a/gadgets/algebra/twisted_edwards/point.go b/gadgets/algebra/twisted_edwards/point.go index e35e9adc7..010c7a3a7 100644 --- a/gadgets/algebra/twisted_edwards/point.go +++ b/gadgets/algebra/twisted_edwards/point.go @@ -72,9 +72,9 @@ func (p *PointGadget) IsOnCurveGadget(circuit *frontend.CS, curve EdCurveGadget) } -// Add Adds two points, among which is one fixed point (the base), on a twisted edwards curve (eg jubjub) +// AddFixedPoint Adds two points, among which is one fixed point (the base), on a twisted edwards curve (eg jubjub) // p1, base, ecurve are respectively: the point to add, a known base point, and the parameters of the twisted edwards curve -func (p PointGadget) Add(circuit *frontend.CS, p1 *PointGadget, x, y interface{}, curve EdCurveGadget) PointGadget { +func (p *PointGadget) AddFixedPoint(circuit *frontend.CS, p1 *PointGadget, x, y interface{}, curve EdCurveGadget) *PointGadget { debug.Assert(p1.X != nil && p1.Y != nil, "point not initialized") @@ -111,11 +111,8 @@ func (p PointGadget) Add(circuit *frontend.CS, p1 *PointGadget, x, y interface{} frontend.Term{Constraint: oneWire, Coeff: *one}, frontend.Term{Constraint: b, Coeff: duv}, } - // TODO here storing big.Int without reduction results in a memory blow up... - // But storing the cruve params ad Fr elmts specialiazes the structure... - // Don't know what is the best here var tmp big.Int - tmp.Neg(&curve.A).Mul(&tmp, &X) + tmp.Neg(&curve.A).Mul(&tmp, &X).Mod(&tmp, &curve.Modulus) num = frontend.LinearCombination{ frontend.Term{Constraint: p1.Y, Coeff: Y}, frontend.Term{Constraint: p1.X, Coeff: tmp}, @@ -128,61 +125,109 @@ func (p PointGadget) Add(circuit *frontend.CS, p1 *PointGadget, x, y interface{} return p } -// // AddGeneric Adds two points on a twisted edwards curve (eg jubjub) -// // p1, p2, c are respectively: the point to add, a known base point, and the parameters of the twisted edwards curve -// func (p *Point) AddGeneric(p1, p2 *Point, ecurve twistededwards.CurveParams) *Point { +// AddGeneric Adds two points on a twisted edwards curve (eg jubjub) +// p1, p2, c are respectively: the point to add, a known base point, and the parameters of the twisted edwards curve +func (p *PointGadget) AddGeneric(circuit *frontend.CS, p1, p2 *PointGadget, curve EdCurveGadget) *PointGadget { -// debug.Assert(p1.circuit != nil && p1.X != nil && p1.Y != nil, "point not initialized") -// debug.Assert(p2.circuit != nil && p2.X != nil && p2.Y != nil, "point not initialized") + debug.Assert(p1.X != nil && p1.Y != nil, "point not initialized") + debug.Assert(p2.X != nil && p2.Y != nil, "point not initialized") -// circuit := p.circuit -// // cf https://z.cash/technology/jubjub/ -// // or https://eprint.iacr.org/2008/013.pdf -// res := &Point{circuit: p.circuit} - -// var one fr.Element -// one.SetOne() - -// oneWire := circuit.ALLOCATE(one) - -// beta := circuit.MUL(p1.X, p2.Y) -// gamma := circuit.MUL(p1.Y, p2.X) -// delta := circuit.MUL(p1.Y, p2.Y) -// epsilon := circuit.MUL(p1.X, p2.X) -// tau := circuit.MUL(delta, epsilon) -// num := frontend.LinearCombination{ -// frontend.Term{Constraint: beta, Coeff: one}, -// frontend.Term{Constraint: gamma, Coeff: one}, -// } -// den := frontend.LinearCombination{ -// frontend.Term{Constraint: oneWire, Coeff: one}, -// frontend.Term{Constraint: tau, Coeff: ecurve.D}, -// } -// res.X = circuit.DIV(num, den) -// var minusa fr.Element -// minusa.Neg(&ecurve.A) -// num = frontend.LinearCombination{ -// frontend.Term{Constraint: delta, Coeff: one}, -// frontend.Term{Constraint: epsilon, Coeff: minusa}, -// } -// var minusd fr.Element -// minusd.Neg(&ecurve.D) -// den = frontend.LinearCombination{ -// frontend.Term{Constraint: oneWire, Coeff: one}, -// frontend.Term{Constraint: tau, Coeff: minusd}, -// } -// res.Y = circuit.DIV(num, den) + // cf https://z.cash/technology/jubjub/ + // or https://eprint.iacr.org/2008/013.pdf + res := PointGadget{nil, nil} -// p.X = res.X -// p.Y = res.Y -// return p -// } + one := big.NewInt(1) + oneWire := circuit.ALLOCATE(one) -// // Double doubles a points in SNARK coordinates -// func (p *Point) Double(p1 *Point, ecurve twistededwards.CurveParams) *Point { -// p.AddGeneric(p1, p1, ecurve) -// return p -// } + beta := circuit.MUL(p1.X, p2.Y) + gamma := circuit.MUL(p1.Y, p2.X) + delta := circuit.MUL(p1.Y, p2.Y) + epsilon := circuit.MUL(p1.X, p2.X) + tau := circuit.MUL(delta, epsilon) + num := frontend.LinearCombination{ + frontend.Term{Constraint: beta, Coeff: *one}, + frontend.Term{Constraint: gamma, Coeff: *one}, + } + den := frontend.LinearCombination{ + frontend.Term{Constraint: oneWire, Coeff: *one}, + frontend.Term{Constraint: tau, Coeff: curve.D}, + } + res.X = circuit.DIV(num, den) + var minusa big.Int + minusa.Neg(&curve.A).Mod(&minusa, &curve.Modulus) + num = frontend.LinearCombination{ + frontend.Term{Constraint: delta, Coeff: *one}, + frontend.Term{Constraint: epsilon, Coeff: minusa}, + } + var minusd big.Int + minusd.Neg(&curve.D).Mod(&minusd, &curve.Modulus) + den = frontend.LinearCombination{ + frontend.Term{Constraint: oneWire, Coeff: *one}, + frontend.Term{Constraint: tau, Coeff: minusd}, + } + res.Y = circuit.DIV(num, den) + + p.X = res.X + p.Y = res.Y + return p +} + +// Double doubles a points in SNARK coordinates +func (p *PointGadget) Double(circuit *frontend.CS, p1 *PointGadget, curve EdCurveGadget) *PointGadget { + p.AddGeneric(circuit, p1, p1, curve) + return p +} + +// ScalarMulNonFixedBase computes the scalar multiplication of a point on a twisted Edwards curve +// p1: base point (as snark point) +// curve: parameters of the Edwards curve +// scal: scalar as a SNARK constraint +// Standard left to right double and add +func (p *PointGadget) ScalarMulNonFixedBase(circuit *frontend.CS, p1 *PointGadget, scalar *frontend.Constraint, curve EdCurveGadget) *PointGadget { + + // first unpack the scalar + b := circuit.TO_BINARY(scalar, 256) + + res := NewPointGadget(circuit, 0, 1) + + for i := len(b) - 1; i >= 0; i-- { + res.Double(circuit, &res, curve) + tmp := NewPointGadget(circuit, nil, nil) + tmp.AddGeneric(circuit, &res, p1, curve) + res.X = circuit.SELECT(b[i], tmp.X, res.X) + res.Y = circuit.SELECT(b[i], tmp.Y, res.Y) + } + + p.X = res.X + p.Y = res.Y + return p +} + +// ScalarMulFixedBase computes the scalar multiplication of a point on a twisted Edwards curve +// x, y: coordinates of the base point +// curve: parameters of the Edwards curve +// scal: scalar as a SNARK constraint +// Standard left to right double and add +// TODO passing a point a x, y interface{} is a bit ugly, but on the other hand creating a special struct{x, y interface{}} only for general point seems too much +func (p *PointGadget) ScalarMulFixedBase(circuit *frontend.CS, x, y interface{}, scalar *frontend.Constraint, curve EdCurveGadget) *PointGadget { + + // first unpack the scalar + b := circuit.TO_BINARY(scalar, 256) + + res := NewPointGadget(circuit, 0, 1) + + for i := len(b) - 1; i >= 0; i-- { + res.Double(circuit, &res, curve) + tmp := NewPointGadget(circuit, nil, nil) + tmp.AddFixedPoint(circuit, &res, x, y, curve) + res.X = circuit.SELECT(b[i], tmp.X, res.X) + res.Y = circuit.SELECT(b[i], tmp.Y, res.Y) + } + + p.X = res.X + p.Y = res.Y + return p +} // // ScalarMul computes the scalar multiplication of a point on a twisted Edwards curve // func (p *Point) ScalarMul(p1 interface{}, ecurve twistededwards.CurveParams, scalar *frontend.Constraint, n int) *Point { @@ -289,31 +334,3 @@ func (p PointGadget) Add(circuit *frontend.CS, p1 *PointGadget, x, y interface{} // p.Y = curPoint.Y // return p // } - -// ScalarMulGadget computes the scalar multiplication of a point on a twisted Edwards curve -// p1: base point (as snark point) -// c: parameters of the curve -// scal: scalar as a SNARK constraint -// n: nbBits of the scalar -// Standard left to right double and add -// func (p *Point) scalarMulNonFixedBase(p1 *Point, scalar *frontend.Constraint, c twistededwards.CurveParams, n int) *Point { - -// circuit := p1.circuit - -// // first unpack the scalar -// b := circuit.TO_BINARY(scalar, n) - -// res := NewPoint(circuit, 0, 1) - -// for i := len(b) - 1; i >= 0; i-- { -// res.Double(&res, c) -// tmp := &Point{circuit: circuit} -// tmp.AddGeneric(&res, p1, c) -// res.X = circuit.SELECT(b[i], tmp.X, res.X) -// res.Y = circuit.SELECT(b[i], tmp.Y, res.Y) -// } - -// p.X = res.X -// p.Y = res.Y -// return p -// } diff --git a/gadgets/algebra/twisted_edwards/twisted_edwards_test.go b/gadgets/algebra/twisted_edwards/twisted_edwards_test.go index 7ff762158..893529e1c 100644 --- a/gadgets/algebra/twisted_edwards/twisted_edwards_test.go +++ b/gadgets/algebra/twisted_edwards/twisted_edwards_test.go @@ -24,7 +24,6 @@ import ( groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" "github.com/consensys/gnark/frontend" "github.com/consensys/gurvy" - "github.com/consensys/gurvy/bn256/fr" fr_bn256 "github.com/consensys/gurvy/bn256/fr" ) @@ -44,7 +43,7 @@ func TestAdd(t *testing.T) { pointSnark := NewPointGadget(&circuit, circuit.SECRET_INPUT("x"), circuit.SECRET_INPUT("y")) // add points in circuit (the method updates the underlying plain points as well) - resPointSnark := pointSnark.Add(&circuit, &pointSnark, edgadget.BaseX, edgadget.BaseY, edgadget) + resPointSnark := pointSnark.AddFixedPoint(&circuit, &pointSnark, edgadget.BaseX, edgadget.BaseY, edgadget) resPointSnark.X.Tag("xg") resPointSnark.Y.Tag("yg") @@ -53,7 +52,7 @@ func TestAdd(t *testing.T) { inputs.Assign(backend.Secret, "y", "11523897191511824241384532572407048303306774918928882376450136656947192273193") expectedValues := make(map[string]fr_bn256.Element) - var expectedu, expectedv fr.Element + var expectedu, expectedv fr_bn256.Element expectedu.SetString("4966531224162673480738068143298314346828081427171102366578720605707900725483") expectedv.SetString("18072205942244039714668938595243139985382136665954711533267729308917439031819") expectedValues["xg"] = expectedu @@ -63,138 +62,165 @@ func TestAdd(t *testing.T) { _r1cs := circuit.ToR1CS() r1csbn256 := backend_bn256.New(_r1cs) - assertbn256.Solved(&r1csbn256, inputs, expectedValues) + assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) } -// func TestAddGeneric(t *testing.T) { +func TestAddGeneric(t *testing.T) { -// s := frontend.New() + circuit := frontend.New() -// assert := frontend.NewAssert(t) + assertbn256 := groth16_bn256.NewAssert(t) -// pointSnark1 := NewPoint(&s, s.SECRET_INPUT("x1"), s.SECRET_INPUT("y1")) -// pointSnark2 := NewPoint(&s, s.SECRET_INPUT("x2"), s.SECRET_INPUT("y2")) + // get edwards curve gadget + edgadget, err := NewEdCurveGadget(&circuit, gurvy.BN256) + if err != nil { + t.Fatal(err) + } -// // set curve parameters -// ed := twistededwards.GetEdwardsCurve() + // set the Snark points + pointSnark1 := NewPointGadget(&circuit, circuit.SECRET_INPUT("x1"), circuit.SECRET_INPUT("y1")) + pointSnark2 := NewPointGadget(&circuit, circuit.SECRET_INPUT("x2"), circuit.SECRET_INPUT("y2")) -// // add points in circuit (the method updates the underlying plain points as well) -// pointSnark1.AddGeneric(&pointSnark1, &pointSnark2, ed) -// pointSnark1.X.Tag("xg") -// pointSnark1.Y.Tag("yg") + // add points in circuit (the method updates the underlying plain points as well) + pointSnark1.AddGeneric(&circuit, &pointSnark1, &pointSnark2, edgadget) + pointSnark1.X.Tag("xg") + pointSnark1.Y.Tag("yg") -// inputs := backend.NewAssignment() -// inputs.Assign(backend.Secret, "x1", "5299619240641551281634865583518297030282874472190772894086521144482721001553") -// inputs.Assign(backend.Secret, "y1", "16950150798460657717958625567821834550301663161624707787222815936182638968203") -// inputs.Assign(backend.Secret, "x2", "15132049151119024294202596478829150741889300374007672163496852915064138587014") -// inputs.Assign(backend.Secret, "y2", "11523897191511824241384532572407048303306774918928882376450136656947192273193") + inputs := backend.NewAssignment() + inputs.Assign(backend.Secret, "x1", "5299619240641551281634865583518297030282874472190772894086521144482721001553") + inputs.Assign(backend.Secret, "y1", "16950150798460657717958625567821834550301663161624707787222815936182638968203") + inputs.Assign(backend.Secret, "x2", "15132049151119024294202596478829150741889300374007672163496852915064138587014") + inputs.Assign(backend.Secret, "y2", "11523897191511824241384532572407048303306774918928882376450136656947192273193") + + expectedValues := make(map[string]fr_bn256.Element) + var expectedu, expectedv fr_bn256.Element + expectedu.SetString("4966531224162673480738068143298314346828081427171102366578720605707900725483") + expectedv.SetString("18072205942244039714668938595243139985382136665954711533267729308917439031819") + expectedValues["xg"] = expectedu + expectedValues["yg"] = expectedv + + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbn256 := backend_bn256.New(_r1cs) -// expectedValues := make(map[string]interface{}) -// var expectedu, expectedv fr.Element -// expectedu.SetString("4966531224162673480738068143298314346828081427171102366578720605707900725483") -// expectedv.SetString("18072205942244039714668938595243139985382136665954711533267729308917439031819") -// expectedValues["xg"] = expectedu -// expectedValues["yg"] = expectedv + assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) +} -// assert.Solved(s, inputs, expectedValues) -// } +func TestDouble(t *testing.T) { -// func TestDouble(t *testing.T) { + circuit := frontend.New() -// s := frontend.New() + assertbn256 := groth16_bn256.NewAssert(t) -// assert := frontend.NewAssert(t) + pointSnark := NewPointGadget(&circuit, circuit.SECRET_INPUT("x"), circuit.SECRET_INPUT("y")) -// pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) + // set curve parameters + edgadget, err := NewEdCurveGadget(&circuit, gurvy.BN256) + if err != nil { + t.Fatal(err) + } -// // set curve parameters -// ed := twistededwards.GetEdwardsCurve() + // add points in circuit (the method updates the underlying plain points as well) + pointSnark.Double(&circuit, &pointSnark, edgadget) + pointSnark.X.Tag("xg") + pointSnark.Y.Tag("yg") -// // add points in circuit (the method updates the underlying plain points as well) -// pointSnark.Double(&pointSnark, ed) -// pointSnark.X.Tag("xg") -// pointSnark.Y.Tag("yg") + inputs := backend.NewAssignment() + inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") + inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") -// inputs := backend.NewAssignment() -// inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") -// inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") + expectedValues := make(map[string]fr_bn256.Element) + var expectedu, expectedv fr_bn256.Element + expectedu.SetString("10031262171927540148667355526369034398030886437092045105752248699557385197826") + expectedv.SetString("633281375905621697187330766174974863687049529291089048651929454608812697683") + expectedValues["xg"] = expectedu + expectedValues["yg"] = expectedv -// expectedValues := make(map[string]interface{}) -// var expectedu, expectedv fr.Element -// expectedu.SetString("10031262171927540148667355526369034398030886437092045105752248699557385197826") -// expectedv.SetString("633281375905621697187330766174974863687049529291089048651929454608812697683") -// expectedValues["xg"] = expectedu -// expectedValues["yg"] = expectedv + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbn256 := backend_bn256.New(_r1cs) -// assert.Solved(s, inputs, expectedValues) -// } + assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) +} -// func TestScalarMulFixedBase(t *testing.T) { +func TestScalarMulFixedBase(t *testing.T) { -// s := frontend.New() + circuit := frontend.New() -// assert := frontend.NewAssert(t) + assertbn256 := groth16_bn256.NewAssert(t) -// // set curve parameters -// ed := twistededwards.GetEdwardsCurve() + // set curve parameters + edgadget, err := NewEdCurveGadget(&circuit, gurvy.BN256) + if err != nil { + t.Fatal(err) + } -// // set point in the circuit -// pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) + // set point in the circuit + pointSnark := NewPointGadget(&circuit, circuit.SECRET_INPUT("x"), circuit.SECRET_INPUT("y")) -// // set scalar -// scalar := s.ALLOCATE("28242048") + // set scalar + scalar := circuit.ALLOCATE("28242048") -// inputs := backend.NewAssignment() -// inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") -// inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") + inputs := backend.NewAssignment() + inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") + inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") -// // add points in circuit (the method updates the underlying plain points as well) -// pointSnark.scalarMulFixedBase(&ed.Base, ed, scalar, 25) -// pointSnark.X.Tag("xg") -// pointSnark.Y.Tag("yg") + // add points in circuit (the method updates the underlying plain points as well) + pointSnark.ScalarMulFixedBase(&circuit, edgadget.BaseX, edgadget.BaseY, scalar, edgadget) + pointSnark.X.Tag("xg") + pointSnark.Y.Tag("yg") -// expectedValues := make(map[string]interface{}) -// var expectedu, expectedv fr.Element -// expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") -// expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") -// expectedValues["xg"] = expectedu -// expectedValues["yg"] = expectedv + expectedValues := make(map[string]fr_bn256.Element) + var expectedu, expectedv fr_bn256.Element + expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") + expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") + expectedValues["xg"] = expectedu + expectedValues["yg"] = expectedv -// assert.Solved(s, inputs, expectedValues) + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbn256 := backend_bn256.New(_r1cs) -// } + assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) +} -// func TestScalarMulNonFixedBase(t *testing.T) { +func TestScalarMulNonFixedBase(t *testing.T) { -// s := frontend.New() + circuit := frontend.New() -// assert := frontend.NewAssert(t) + assertbn256 := groth16_bn256.NewAssert(t) -// // set curve parameters -// ed := twistededwards.GetEdwardsCurve() + // set curve parameters + edgadget, err := NewEdCurveGadget(&circuit, gurvy.BN256) + if err != nil { + t.Fatal(err) + } -// // set point in the circuit -// pointSnark := NewPoint(&s, s.SECRET_INPUT("x"), s.SECRET_INPUT("y")) + // set point in the circuit + pointSnark := NewPointGadget(&circuit, circuit.SECRET_INPUT("x"), circuit.SECRET_INPUT("y")) -// // set scalar -// scalar := s.ALLOCATE("28242048") + // set scalar + scalar := circuit.ALLOCATE("28242048") -// inputs := backend.NewAssignment() -// inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") -// inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") + inputs := backend.NewAssignment() + inputs.Assign(backend.Secret, "x", "5299619240641551281634865583518297030282874472190772894086521144482721001553") + inputs.Assign(backend.Secret, "y", "16950150798460657717958625567821834550301663161624707787222815936182638968203") -// // add points in circuit (the method updates the underlying plain points as well) -// pointSnark.scalarMulNonFixedBase(&pointSnark, scalar, ed, 25) -// pointSnark.X.Tag("xg") -// pointSnark.Y.Tag("yg") + // add points in circuit (the method updates the underlying plain points as well) + pointSnark.ScalarMulNonFixedBase(&circuit, &pointSnark, scalar, edgadget) + pointSnark.X.Tag("xg") + pointSnark.Y.Tag("yg") -// expectedValues := make(map[string]interface{}) -// var expectedu, expectedv fr.Element -// expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") -// expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") -// expectedValues["xg"] = expectedu -// expectedValues["yg"] = expectedv + expectedValues := make(map[string]fr_bn256.Element) + var expectedu, expectedv fr_bn256.Element + expectedu.SetString("10190477835300927557649934238820360529458681672073866116232821892325659279502") + expectedv.SetString("7969140283216448215269095418467361784159407896899334866715345504515077887397") + expectedValues["xg"] = expectedu + expectedValues["yg"] = expectedv -// assert.Solved(s, inputs, expectedValues) + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbn256 := backend_bn256.New(_r1cs) -// } + assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) +} diff --git a/gadgets/hash/mimc/mimc_test.go b/gadgets/hash/mimc/mimc_test.go index 75a22ee7b..46285c6d1 100644 --- a/gadgets/hash/mimc/mimc_test.go +++ b/gadgets/hash/mimc/mimc_test.go @@ -75,7 +75,7 @@ func TestMimcBN256(t *testing.T) { _r1cs := circuit.ToR1CS() r1csbn256 := backend_bn256.New(_r1cs) - assertbn256.Solved(&r1csbn256, inputs, expectedValues) + assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) } @@ -112,7 +112,7 @@ func TestMimcBLS381(t *testing.T) { _r1cs := circuit.ToR1CS() r1csbls381 := backend_bls381.New(_r1cs) - assertbls381.Solved(&r1csbls381, inputs, expectedValues) + assertbls381.CorrectExecution(&r1csbls381, inputs, expectedValues) } @@ -149,6 +149,6 @@ func TestMimcBLS377(t *testing.T) { _r1cs := circuit.ToR1CS() r1csbls377 := backend_bls377.New(_r1cs) - assertbls377.Solved(&r1csbls377, inputs, expectedValues) + assertbls377.CorrectExecution(&r1csbls377, inputs, expectedValues) } diff --git a/gadgets/signature/eddsa/eddsa.go.backup b/gadgets/signature/eddsa/eddsa.go.backup index d84bea142..f17930828 100644 --- a/gadgets/signature/eddsa/eddsa.go.backup +++ b/gadgets/signature/eddsa/eddsa.go.backup @@ -21,6 +21,7 @@ import ( "github.com/consensys/gnark/frontend/std/gadget/hash/mimc" "github.com/consensys/gnark/frontend/std/reference/signature/eddsa" "github.com/consensys/gurvy/bn256/fr" + "github.com/consensys/gurvy/bn256/twistededwards" ) // PublicKey snark version of the public key diff --git a/internal/generators/backend/template/zkpschemes/groth16_utils.go b/internal/generators/backend/template/zkpschemes/groth16_utils.go index 161d22a37..a46aace20 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_utils.go +++ b/internal/generators/backend/template/zkpschemes/groth16_utils.go @@ -106,14 +106,16 @@ func (assert *Assert) CorrectExecution(r1cs *backend_{{toLower .Curve}}.R1CS, so b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - r1cs.Solve(solution, a, b, c, wireValues) - res, _ := r1cs.Inspect(wireValues) + err := r1cs.Solve(solution, a, b, c, wireValues) + assert.Nil(err, "Solving the constraint system with correct inputs should not output an error") + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") for k, v := range expectedValues { val, ok := res[k] assert.True(ok, "Variable to test <"+k+"> (backend_{{toLower .Curve}}) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_{{toLower .Curve}}) does not have the expected value") - + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_{{toLower .Curve}}) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } ` From 5be7e7e2fc894ff7276ec6457cbe66e4a5522fbf Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Wed, 15 Apr 2020 11:31:12 +0200 Subject: [PATCH 13/19] Eddsa gadget with bigInt r1cs works. Refactoring needs to be done in the assertions handling in the backend. --- backend/bn256/groth16/utils.go | 24 ++++ cryptolib/hash/mimc/bn256/mimc_bn256.go | 4 +- cryptolib/internal/generator/generator.go | 9 +- cryptolib/internal/main.go | 7 +- cryptolib/internal/meta/metadata.go | 7 -- cryptolib/internal/template/eddsa.go | 31 ++--- cryptolib/internal/template/test_eddsa.go | 7 +- cryptolib/signature/eddsa/bls381/eddsa.go | 30 ++--- .../signature/eddsa/bls381/eddsa_test.go | 7 +- cryptolib/signature/eddsa/bn256/eddsa.go | 30 ++--- cryptolib/signature/eddsa/bn256/eddsa_test.go | 7 +- .../curve.go | 11 +- .../point.go | 3 +- .../twisted_edwards_test.go | 0 gadgets/guideline.txt | 4 + gadgets/signature/eddsa/eddsa.go | 75 +++++++++++ gadgets/signature/eddsa/eddsa.go.backup | 74 ----------- gadgets/signature/eddsa/eddsa_test.go | 116 ++++++++++++++++++ gadgets/signature/eddsa/eddsa_test.go.backup | 76 ------------ .../template/zkpschemes/groth16_utils.go | 22 ++++ 20 files changed, 319 insertions(+), 225 deletions(-) delete mode 100644 cryptolib/internal/meta/metadata.go rename gadgets/algebra/{twisted_edwards => twistededwards}/curve.go (89%) rename gadgets/algebra/{twisted_edwards => twistededwards}/point.go (99%) rename gadgets/algebra/{twisted_edwards => twistededwards}/twisted_edwards_test.go (100%) create mode 100644 gadgets/guideline.txt create mode 100644 gadgets/signature/eddsa/eddsa.go delete mode 100644 gadgets/signature/eddsa/eddsa.go.backup create mode 100644 gadgets/signature/eddsa/eddsa_test.go delete mode 100644 gadgets/signature/eddsa/eddsa_test.go.backup diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go index b5dc8155d..87d8639fb 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/utils.go @@ -57,6 +57,8 @@ func (assert *Assert) NotSolved(r1cs *backend_bn256.R1CS, solution backend.Assig assert.Error(err, "proving with bad solution should output an error") } +// TODO refactor the assertions (for instance for the gadgets we just want to check that the circuit is solved correctly, groth16 shouldn't be involved) + // Solved check that a solution solves a circuit // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c @@ -136,3 +138,25 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bn256.R1CS, solution backen assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bn256) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } + +// ConsistantExpectedValues checks only the consistency against a map of expected values +func (assert *Assert) ConsistantExpectedValues(r1cs *backend_bn256.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + var root fr.Element + fftDomain := backend_bn256.NewDomain(root, backend_bn256.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_bn256) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bn256) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) + } +} diff --git a/cryptolib/hash/mimc/bn256/mimc_bn256.go b/cryptolib/hash/mimc/bn256/mimc_bn256.go index 7cadcbdb9..f4939ef0e 100644 --- a/cryptolib/hash/mimc/bn256/mimc_bn256.go +++ b/cryptolib/hash/mimc/bn256/mimc_bn256.go @@ -35,11 +35,11 @@ type Params []fr.Element // NewMiMC returns a MiMCImpl object, pure-go reference implementation func NewMiMC(seed string) MiMC { - return MiMC{NewParams(seed)} + return MiMC{newParams(seed)} } // NewParams creates new mimc object -func NewParams(seed string) Params { +func newParams(seed string) Params { // set the constants res := make(Params, mimcNbRounds) diff --git a/cryptolib/internal/generator/generator.go b/cryptolib/internal/generator/generator.go index e1a02a8ca..5bd48e515 100644 --- a/cryptolib/internal/generator/generator.go +++ b/cryptolib/internal/generator/generator.go @@ -5,12 +5,17 @@ import ( "strings" "github.com/consensys/bavard" - "github.com/consensys/gnark/cryptolib/internal/meta" "github.com/consensys/gnark/cryptolib/internal/template" ) +// Data meta data for template generation +type Data struct { + Curve string + Path string +} + // Generate template generator -func Generate(d meta.Data) error { +func Generate(d Data) error { if !strings.HasSuffix(d.Path, "/") { d.Path += "/" diff --git a/cryptolib/internal/main.go b/cryptolib/internal/main.go index 8e1281e3f..948ae8f73 100644 --- a/cryptolib/internal/main.go +++ b/cryptolib/internal/main.go @@ -4,23 +4,22 @@ import ( "os" "github.com/consensys/gnark/cryptolib/internal/generator" - "github.com/consensys/gnark/cryptolib/internal/meta" ) //go:generate go run -tags debug main.go func main() { - bls381 := meta.Data{ + bls381 := generator.Data{ Curve: "BLS381", Path: "../signature/eddsa/bls381/", } - bn256 := meta.Data{ + bn256 := generator.Data{ Curve: "BN256", Path: "../signature/eddsa/bn256/", } - data := []meta.Data{bls381, bn256} + data := []generator.Data{bls381, bn256} for _, d := range data { if err := os.MkdirAll(d.Path, 0700); err != nil { diff --git a/cryptolib/internal/meta/metadata.go b/cryptolib/internal/meta/metadata.go deleted file mode 100644 index 624cf6a39..000000000 --- a/cryptolib/internal/meta/metadata.go +++ /dev/null @@ -1,7 +0,0 @@ -package meta - -// Data meta data for template generation -type Data struct { - Curve string - Path string -} diff --git a/cryptolib/internal/template/eddsa.go b/cryptolib/internal/template/eddsa.go index fe0c01459..5655475f4 100644 --- a/cryptolib/internal/template/eddsa.go +++ b/cryptolib/internal/template/eddsa.go @@ -38,7 +38,7 @@ type privateKey struct { // Eddsa stores parameters to generate and verify eddsa signature type Eddsa struct { priv privateKey - pub PublicKey + Pub PublicKey curveParams *twistededwards.CurveParams } @@ -69,7 +69,7 @@ func New(seed [32]byte, c twistededwards.CurveParams) Eddsa { res.priv.scalar.SetBigInt(&tmp).FromMont() res.curveParams = &c - res.pub.A.ScalarMul(&c.Base, c, res.priv.scalar) + res.Pub.A.ScalarMul(&c.Base, c, res.priv.scalar) return res } @@ -114,8 +114,8 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { data := []fr.Element{ res.R.X, res.R.Y, - eddsaObj.pub.A.X, - eddsaObj.pub.A.Y, + eddsaObj.Pub.A.X, + eddsaObj.Pub.A.Y, message, } @@ -138,10 +138,10 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { // Verify verifies an eddsa signature // cf https://en.wikipedia.org/wiki/EdDSA -func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { +func Verify(sig Signature, message fr.Element, pub PublicKey, params *twistededwards.CurveParams) (bool, error) { // verify that pubKey and R are on the curve - if !eddsaObj.pub.A.IsOnCurve(*eddsaObj.curveParams) { + if !pub.A.IsOnCurve(*params) { return false, ErrNotOnCurve } @@ -149,8 +149,8 @@ func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { data := []fr.Element{ sig.R.X, sig.R.Y, - eddsaObj.pub.A.X, - eddsaObj.pub.A.Y, + pub.A.X, + pub.A.Y, message, } hram := {{toLower .Curve}}.NewMiMC("seed").Hash(data...) @@ -158,19 +158,19 @@ func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { // lhs = cofactor*S*Base var lhs twistededwards.Point - lhs.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, sig.S). - ScalarMul(&lhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) + lhs.ScalarMul(¶ms.Base, *params, sig.S). + ScalarMul(&lhs, *params, params.Cofactor) - if !lhs.IsOnCurve(*eddsaObj.curveParams) { + if !lhs.IsOnCurve(*params) { return false, ErrNotOnCurve } // rhs = cofactor*(R + H(R,A,M)*A) var rhs twistededwards.Point - rhs.ScalarMul(&eddsaObj.pub.A, *eddsaObj.curveParams, hram). - Add(&rhs, &sig.R, *eddsaObj.curveParams). - ScalarMul(&rhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) - if !rhs.IsOnCurve(*eddsaObj.curveParams) { + rhs.ScalarMul(&pub.A, *params, hram). + Add(&rhs, &sig.R, *params). + ScalarMul(&rhs, *params, params.Cofactor) + if !rhs.IsOnCurve(*params) { return false, ErrNotOnCurve } @@ -180,4 +180,5 @@ func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { } return true, nil } + ` diff --git a/cryptolib/internal/template/test_eddsa.go b/cryptolib/internal/template/test_eddsa.go index 2fdca4124..978c375fd 100644 --- a/cryptolib/internal/template/test_eddsa.go +++ b/cryptolib/internal/template/test_eddsa.go @@ -18,18 +18,17 @@ func TestEddsa(t *testing.T) { seed[i] = v } + // create eddsa obj and sign a message signer := New(seed, edcurve) - var msg fr.Element msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") - signature, err := signer.Sign(msg) if err != nil { t.Fatal(err) } // verifies correct msg - res, err := signer.Verify(signature, msg) + res, err := Verify(signature, msg, signer.Pub, signer.curveParams) if err != nil { t.Fatal(err) } @@ -39,7 +38,7 @@ func TestEddsa(t *testing.T) { // verifies wrong msg msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035979") - res, err = signer.Verify(signature, msg) + res, err = Verify(signature, msg, signer.Pub, signer.curveParams) if err != nil { t.Fatal(err) } diff --git a/cryptolib/signature/eddsa/bls381/eddsa.go b/cryptolib/signature/eddsa/bls381/eddsa.go index 13a9ffd43..ddcd3a8f0 100644 --- a/cryptolib/signature/eddsa/bls381/eddsa.go +++ b/cryptolib/signature/eddsa/bls381/eddsa.go @@ -52,7 +52,7 @@ type privateKey struct { // Eddsa stores parameters to generate and verify eddsa signature type Eddsa struct { priv privateKey - pub PublicKey + Pub PublicKey curveParams *twistededwards.CurveParams } @@ -83,7 +83,7 @@ func New(seed [32]byte, c twistededwards.CurveParams) Eddsa { res.priv.scalar.SetBigInt(&tmp).FromMont() res.curveParams = &c - res.pub.A.ScalarMul(&c.Base, c, res.priv.scalar) + res.Pub.A.ScalarMul(&c.Base, c, res.priv.scalar) return res } @@ -128,8 +128,8 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { data := []fr.Element{ res.R.X, res.R.Y, - eddsaObj.pub.A.X, - eddsaObj.pub.A.Y, + eddsaObj.Pub.A.X, + eddsaObj.Pub.A.Y, message, } @@ -152,10 +152,10 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { // Verify verifies an eddsa signature // cf https://en.wikipedia.org/wiki/EdDSA -func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { +func Verify(sig Signature, message fr.Element, pub PublicKey, params *twistededwards.CurveParams) (bool, error) { // verify that pubKey and R are on the curve - if !eddsaObj.pub.A.IsOnCurve(*eddsaObj.curveParams) { + if !pub.A.IsOnCurve(*params) { return false, ErrNotOnCurve } @@ -163,8 +163,8 @@ func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { data := []fr.Element{ sig.R.X, sig.R.Y, - eddsaObj.pub.A.X, - eddsaObj.pub.A.Y, + pub.A.X, + pub.A.Y, message, } hram := bls381.NewMiMC("seed").Hash(data...) @@ -172,19 +172,19 @@ func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { // lhs = cofactor*S*Base var lhs twistededwards.Point - lhs.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, sig.S). - ScalarMul(&lhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) + lhs.ScalarMul(¶ms.Base, *params, sig.S). + ScalarMul(&lhs, *params, params.Cofactor) - if !lhs.IsOnCurve(*eddsaObj.curveParams) { + if !lhs.IsOnCurve(*params) { return false, ErrNotOnCurve } // rhs = cofactor*(R + H(R,A,M)*A) var rhs twistededwards.Point - rhs.ScalarMul(&eddsaObj.pub.A, *eddsaObj.curveParams, hram). - Add(&rhs, &sig.R, *eddsaObj.curveParams). - ScalarMul(&rhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) - if !rhs.IsOnCurve(*eddsaObj.curveParams) { + rhs.ScalarMul(&pub.A, *params, hram). + Add(&rhs, &sig.R, *params). + ScalarMul(&rhs, *params, params.Cofactor) + if !rhs.IsOnCurve(*params) { return false, ErrNotOnCurve } diff --git a/cryptolib/signature/eddsa/bls381/eddsa_test.go b/cryptolib/signature/eddsa/bls381/eddsa_test.go index cb715c2f1..a978b701a 100644 --- a/cryptolib/signature/eddsa/bls381/eddsa_test.go +++ b/cryptolib/signature/eddsa/bls381/eddsa_test.go @@ -33,18 +33,17 @@ func TestEddsa(t *testing.T) { seed[i] = v } + // create eddsa obj and sign a message signer := New(seed, edcurve) - var msg fr.Element msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") - signature, err := signer.Sign(msg) if err != nil { t.Fatal(err) } // verifies correct msg - res, err := signer.Verify(signature, msg) + res, err := Verify(signature, msg, signer.Pub, signer.curveParams) if err != nil { t.Fatal(err) } @@ -54,7 +53,7 @@ func TestEddsa(t *testing.T) { // verifies wrong msg msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035979") - res, err = signer.Verify(signature, msg) + res, err = Verify(signature, msg, signer.Pub, signer.curveParams) if err != nil { t.Fatal(err) } diff --git a/cryptolib/signature/eddsa/bn256/eddsa.go b/cryptolib/signature/eddsa/bn256/eddsa.go index d6e284e55..3de930002 100644 --- a/cryptolib/signature/eddsa/bn256/eddsa.go +++ b/cryptolib/signature/eddsa/bn256/eddsa.go @@ -52,7 +52,7 @@ type privateKey struct { // Eddsa stores parameters to generate and verify eddsa signature type Eddsa struct { priv privateKey - pub PublicKey + Pub PublicKey curveParams *twistededwards.CurveParams } @@ -83,7 +83,7 @@ func New(seed [32]byte, c twistededwards.CurveParams) Eddsa { res.priv.scalar.SetBigInt(&tmp).FromMont() res.curveParams = &c - res.pub.A.ScalarMul(&c.Base, c, res.priv.scalar) + res.Pub.A.ScalarMul(&c.Base, c, res.priv.scalar) return res } @@ -128,8 +128,8 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { data := []fr.Element{ res.R.X, res.R.Y, - eddsaObj.pub.A.X, - eddsaObj.pub.A.Y, + eddsaObj.Pub.A.X, + eddsaObj.Pub.A.Y, message, } @@ -152,10 +152,10 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { // Verify verifies an eddsa signature // cf https://en.wikipedia.org/wiki/EdDSA -func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { +func Verify(sig Signature, message fr.Element, pub PublicKey, params *twistededwards.CurveParams) (bool, error) { // verify that pubKey and R are on the curve - if !eddsaObj.pub.A.IsOnCurve(*eddsaObj.curveParams) { + if !pub.A.IsOnCurve(*params) { return false, ErrNotOnCurve } @@ -163,8 +163,8 @@ func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { data := []fr.Element{ sig.R.X, sig.R.Y, - eddsaObj.pub.A.X, - eddsaObj.pub.A.Y, + pub.A.X, + pub.A.Y, message, } hram := bn256.NewMiMC("seed").Hash(data...) @@ -172,19 +172,19 @@ func (eddsaObj Eddsa) Verify(sig Signature, message fr.Element) (bool, error) { // lhs = cofactor*S*Base var lhs twistededwards.Point - lhs.ScalarMul(&eddsaObj.curveParams.Base, *eddsaObj.curveParams, sig.S). - ScalarMul(&lhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) + lhs.ScalarMul(¶ms.Base, *params, sig.S). + ScalarMul(&lhs, *params, params.Cofactor) - if !lhs.IsOnCurve(*eddsaObj.curveParams) { + if !lhs.IsOnCurve(*params) { return false, ErrNotOnCurve } // rhs = cofactor*(R + H(R,A,M)*A) var rhs twistededwards.Point - rhs.ScalarMul(&eddsaObj.pub.A, *eddsaObj.curveParams, hram). - Add(&rhs, &sig.R, *eddsaObj.curveParams). - ScalarMul(&rhs, *eddsaObj.curveParams, eddsaObj.curveParams.Cofactor) - if !rhs.IsOnCurve(*eddsaObj.curveParams) { + rhs.ScalarMul(&pub.A, *params, hram). + Add(&rhs, &sig.R, *params). + ScalarMul(&rhs, *params, params.Cofactor) + if !rhs.IsOnCurve(*params) { return false, ErrNotOnCurve } diff --git a/cryptolib/signature/eddsa/bn256/eddsa_test.go b/cryptolib/signature/eddsa/bn256/eddsa_test.go index befb82534..8f68f6c41 100644 --- a/cryptolib/signature/eddsa/bn256/eddsa_test.go +++ b/cryptolib/signature/eddsa/bn256/eddsa_test.go @@ -33,18 +33,17 @@ func TestEddsa(t *testing.T) { seed[i] = v } + // create eddsa obj and sign a message signer := New(seed, edcurve) - var msg fr.Element msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") - signature, err := signer.Sign(msg) if err != nil { t.Fatal(err) } // verifies correct msg - res, err := signer.Verify(signature, msg) + res, err := Verify(signature, msg, signer.Pub, signer.curveParams) if err != nil { t.Fatal(err) } @@ -54,7 +53,7 @@ func TestEddsa(t *testing.T) { // verifies wrong msg msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035979") - res, err = signer.Verify(signature, msg) + res, err = Verify(signature, msg, signer.Pub, signer.curveParams) if err != nil { t.Fatal(err) } diff --git a/gadgets/algebra/twisted_edwards/curve.go b/gadgets/algebra/twistededwards/curve.go similarity index 89% rename from gadgets/algebra/twisted_edwards/curve.go rename to gadgets/algebra/twistededwards/curve.go index 815da73f9..4d868b30e 100644 --- a/gadgets/algebra/twisted_edwards/curve.go +++ b/gadgets/algebra/twistededwards/curve.go @@ -30,6 +30,7 @@ import ( // EdCurveGadget stores the info on the chosen edwards curve type EdCurveGadget struct { A, D, Cofactor, Order, BaseX, BaseY, Modulus big.Int + ID gurvy.ID } var newTwistedEdwards map[gurvy.ID]func(*frontend.CS) EdCurveGadget @@ -54,14 +55,17 @@ func NewEdCurveGadget(circuit *frontend.CS, id gurvy.ID) (EdCurveGadget, error) func newEdBN256(circuit *frontend.CS) EdCurveGadget { edcurve := edbn256.GetEdwardsCurve() + var cofactorReg big.Int + edcurve.Cofactor.ToBigInt(&cofactorReg) res := EdCurveGadget{ A: backend.FromInterface(edcurve.A), D: backend.FromInterface(edcurve.D), - Cofactor: backend.FromInterface(edcurve.Cofactor), + Cofactor: backend.FromInterface(cofactorReg), Order: backend.FromInterface(edcurve.Order), BaseX: backend.FromInterface(edcurve.Base.X), BaseY: backend.FromInterface(edcurve.Base.Y), + ID: gurvy.BN256, } // TODO use the modulus soon-to-be exported by goff res.Modulus.SetString("21888242871839275222246405745257275088548364400416034343698204186575808495617", 10) @@ -73,14 +77,17 @@ func newEdBN256(circuit *frontend.CS) EdCurveGadget { func newEdBLS381(circuit *frontend.CS) EdCurveGadget { edcurve := edbls381.GetEdwardsCurve() + var cofactorReg big.Int + edcurve.Cofactor.ToBigInt(&cofactorReg) res := EdCurveGadget{ A: backend.FromInterface(edcurve.A), D: backend.FromInterface(edcurve.D), - Cofactor: backend.FromInterface(edcurve.Cofactor), + Cofactor: backend.FromInterface(cofactorReg), Order: backend.FromInterface(edcurve.Order), BaseX: backend.FromInterface(edcurve.Base.X), BaseY: backend.FromInterface(edcurve.Base.Y), + ID: gurvy.BLS381, } // TODO use the modulus soon-to-be exported by goff res.Modulus.SetString("52435875175126190479447740508185965837690552500527637822603658699938581184513", 10) diff --git a/gadgets/algebra/twisted_edwards/point.go b/gadgets/algebra/twistededwards/point.go similarity index 99% rename from gadgets/algebra/twisted_edwards/point.go rename to gadgets/algebra/twistededwards/point.go index 010c7a3a7..ba4aceca3 100644 --- a/gadgets/algebra/twisted_edwards/point.go +++ b/gadgets/algebra/twistededwards/point.go @@ -56,12 +56,13 @@ func (p *PointGadget) IsOnCurveGadget(circuit *frontend.CS, curve EdCurveGadget) debug.Assert(p.X != nil && p.Y != nil, "point not initialized") one := big.NewInt(1) + l1 := frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: curve.A}} l2 := frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: *one}} axx := circuit.MUL(l1, l2) - yy := circuit.MUL(p.Y, p.Y) lhs := circuit.ADD(axx, yy) + l1 = frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: curve.D}} l2 = frontend.LinearCombination{frontend.Term{Constraint: p.X, Coeff: *one}} dxx := circuit.MUL(l1, l2) diff --git a/gadgets/algebra/twisted_edwards/twisted_edwards_test.go b/gadgets/algebra/twistededwards/twisted_edwards_test.go similarity index 100% rename from gadgets/algebra/twisted_edwards/twisted_edwards_test.go rename to gadgets/algebra/twistededwards/twisted_edwards_test.go diff --git a/gadgets/guideline.txt b/gadgets/guideline.txt new file mode 100644 index 000000000..254647381 --- /dev/null +++ b/gadgets/guideline.txt @@ -0,0 +1,4 @@ +API for gadgets: +---------------- + +obj.(*frontend.CS, ... ) diff --git a/gadgets/signature/eddsa/eddsa.go b/gadgets/signature/eddsa/eddsa.go new file mode 100644 index 000000000..3a11623a4 --- /dev/null +++ b/gadgets/signature/eddsa/eddsa.go @@ -0,0 +1,75 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package eddsa + +import ( + "github.com/consensys/gnark/frontend" + "github.com/consensys/gnark/gadgets/algebra/twistededwards" + "github.com/consensys/gnark/gadgets/hash/mimc" +) + +// PublicKeyGadget stores an eddsa public key in a r1cs +type PublicKeyGadget struct { + A twistededwards.PointGadget +} + +// SignatureGadget stores a signature as a gadget +type SignatureGadget struct { + R PublicKeyGadget + S *frontend.Constraint +} + +// Verify verifies an eddsa signature +// cf https://en.wikipedia.org/wiki/EdDSA +func Verify(circuit *frontend.CS, sig SignatureGadget, msg *frontend.Constraint, pubKey PublicKeyGadget, params twistededwards.EdCurveGadget) error { + + // compute H(R, A, M), all parameters in data are in Montgomery form + data := []*frontend.Constraint{ + sig.R.A.X, + sig.R.A.Y, + pubKey.A.X, + pubKey.A.Y, + msg, + } + + mimcGadget, err := mimc.NewMiMCGadget("seed", params.ID) + if err != nil { + return err + } + hramAllocated := mimcGadget.Hash(circuit, data...) + mimcGadget.Hash(circuit, data...) + + // lhs = cofactor*SB + cofactorAllocated := circuit.ALLOCATE(params.Cofactor) + lhs := twistededwards.NewPointGadget(circuit, nil, nil) + + lhs.ScalarMulFixedBase(circuit, params.BaseX, params.BaseY, sig.S, params). + ScalarMulNonFixedBase(circuit, &lhs, cofactorAllocated, params) + // TODO adding lhs.IsOnCurveGadget(...) makes the r1cs bug + + // rhs = cofactor*(R+H(R,A,M)*A) + rhs := twistededwards.NewPointGadget(circuit, nil, nil) + rhs.ScalarMulNonFixedBase(circuit, &pubKey.A, hramAllocated, params). + AddGeneric(circuit, &rhs, &sig.R.A, params). + ScalarMulNonFixedBase(circuit, &rhs, cofactorAllocated, params) + // TODO adding rhs.IsOnCurveGadget(...) makes the r1cs bug + + circuit.MUSTBE_EQ(lhs.X, rhs.X) + circuit.MUSTBE_EQ(lhs.Y, rhs.Y) + + return nil +} diff --git a/gadgets/signature/eddsa/eddsa.go.backup b/gadgets/signature/eddsa/eddsa.go.backup deleted file mode 100644 index f17930828..000000000 --- a/gadgets/signature/eddsa/eddsa.go.backup +++ /dev/null @@ -1,74 +0,0 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package eddsa - -import ( - "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/frontend/std/gadget/hash/mimc" - "github.com/consensys/gnark/frontend/std/reference/signature/eddsa" - "github.com/consensys/gurvy/bn256/fr" - "github.com/consensys/gurvy/bn256/twistededwards" -) - -// PublicKey snark version of the public key -type PublicKey struct { - A twistededwards.Point -} - -// Verify verifies an eddsa signature -// cf https://en.wikipedia.org/wiki/EdDSA -func Verify(circuit *frontend.CS, pubKey eddsa.PublicKey, sig eddsa.Signature, message *frontend.Constraint) { - - var cofactorMont fr.Element - cofactorMont.Set(&sig.EdCurve.Cofactor) - cofactorMont.ToMont() - - var sigSMont fr.Element - sigSMont.Set(&sig.S) - sigSMont.ToMont() - - // first put data in the circuit - RSnark := twistededwards.NewPoint(circuit, sig.R.X, sig.R.Y) - sAllocated := circuit.ALLOCATE(sigSMont) // s part of the signature (s = r+H(R,A,M)*secret) - cofactorAllocated := circuit.ALLOCATE(cofactorMont) // cofactor of group of the group - pubKeyAllocated := twistededwards.NewPoint(circuit, pubKey.A.X, pubKey.A.Y) // allocate the public key on the circuit - - // compute H(R, A, M), all parameters in data are in Montgomery form - data := []*frontend.Constraint{ - RSnark.X, - RSnark.Y, - pubKeyAllocated.X, - pubKeyAllocated.Y, - message, - } - - hramAllocated := mimc.NewMiMC("seed").Hash(circuit, data...) - - // lhs = cofactor*SB - lhs := twistededwards.NewPoint(circuit, nil, nil) - lhs.ScalarMul(&sig.EdCurve.Base, *sig.EdCurve, sAllocated, fr.NbBits). - ScalarMul(&lhs, *sig.EdCurve, cofactorAllocated, 4) - - // rhs = cofactor*(R+H(R,A,M)*A) - rhs := twistededwards.NewPoint(circuit, nil, nil) - rhs.ScalarMul(pubKeyAllocated, *sig.EdCurve, hramAllocated, fr.NbBits). - Add(&rhs, &sig.R, *sig.EdCurve). - ScalarMul(&rhs, *sig.EdCurve, cofactorAllocated, 4) - - circuit.MUSTBE_EQ(lhs.X, rhs.X) - circuit.MUSTBE_EQ(lhs.Y, rhs.Y) -} diff --git a/gadgets/signature/eddsa/eddsa_test.go b/gadgets/signature/eddsa/eddsa_test.go new file mode 100644 index 000000000..226cf95df --- /dev/null +++ b/gadgets/signature/eddsa/eddsa_test.go @@ -0,0 +1,116 @@ +/* +Copyright © 2020 ConsenSys + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package eddsa + +import ( + "testing" + + "github.com/consensys/gnark/backend" + backend_bn256 "github.com/consensys/gnark/backend/bn256" + groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" + eddsa_bn256 "github.com/consensys/gnark/cryptolib/signature/eddsa/bn256" + "github.com/consensys/gnark/frontend" + twistededwards_gadget "github.com/consensys/gnark/gadgets/algebra/twistededwards" + "github.com/consensys/gurvy" + fr_bn256 "github.com/consensys/gurvy/bn256/fr" + twistededwards_bn256 "github.com/consensys/gurvy/bn256/twistededwards" +) + +func TestEddsaGadget(t *testing.T) { + + assert := groth16_bn256.NewAssert(t) + + params := twistededwards_bn256.GetEdwardsCurve() + + var seed [32]byte + s := []byte("eddsa") + for i, v := range s { + seed[i] = v + } + + // create eddsa obj and sign a message + signer := eddsa_bn256.New(seed, params) + var msg fr_bn256.Element + msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") + signature, err := signer.Sign(msg) + if err != nil { + t.Fatal(err) + } + res, err := eddsa_bn256.Verify(signature, msg, signer.Pub, ¶ms) + if err != nil { + t.Fatal(err) + } + if !res { + //t.Fatal("Verifying the signature should return true") + } + + // Set the eddsa circuit and the gadget + circuit := frontend.New() + + paramsGadget, err := twistededwards_gadget.NewEdCurveGadget(&circuit, gurvy.BN256) + if err != nil { + t.Fatal(err) + } + + // Allocate the data in the circuit + var pubKeyAllocated PublicKeyGadget + pubKeyAllocated.A.X = circuit.PUBLIC_INPUT("pubkeyX") + pubKeyAllocated.A.Y = circuit.PUBLIC_INPUT("pubkeyY") + + var sigAllocated SignatureGadget + sigAllocated.R.A.X = circuit.PUBLIC_INPUT("sigRX") + sigAllocated.R.A.Y = circuit.PUBLIC_INPUT("sigRY") + + sigAllocated.S = circuit.PUBLIC_INPUT("sigS") + + msgAllocated := circuit.PUBLIC_INPUT("message") + + // verify the signature in the circuit + Verify(&circuit, sigAllocated, msgAllocated, pubKeyAllocated, paramsGadget) + + // verification with the correct message + good := backend.NewAssignment() + good.Assign(backend.Public, "message", msg) + + good.Assign(backend.Public, "pubkeyX", signer.Pub.A.X) + good.Assign(backend.Public, "pubkeyY", signer.Pub.A.Y) + + good.Assign(backend.Public, "sigRX", signature.R.X) + good.Assign(backend.Public, "sigRY", signature.R.Y) + + var SMont fr_bn256.Element + SMont.Set(&signature.S).ToMont() + good.Assign(backend.Public, "sigS", SMont) + + _r1cs := circuit.ToR1CS() + r1cs := backend_bn256.New(_r1cs) + + assert.CorrectExecution(&r1cs, good, nil) + + // verification with incorrect message + bad := backend.NewAssignment() + bad.Assign(backend.Secret, "message", "44717650746155748460101257525078853138837311576962212923649547644148297035979") + + bad.Assign(backend.Public, "pubkeyX", signer.Pub.A.X) + bad.Assign(backend.Public, "pubkeyY", signer.Pub.A.Y) + + bad.Assign(backend.Public, "sigRX", signature.R.X) + bad.Assign(backend.Public, "sigRY", signature.R.Y) + + bad.Assign(backend.Public, "sigS", SMont) + assert.NotSolved(&r1cs, bad) +} diff --git a/gadgets/signature/eddsa/eddsa_test.go.backup b/gadgets/signature/eddsa/eddsa_test.go.backup deleted file mode 100644 index aaf0367c2..000000000 --- a/gadgets/signature/eddsa/eddsa_test.go.backup +++ /dev/null @@ -1,76 +0,0 @@ -// +build bls381 bn256 - -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package eddsa - -import ( - "testing" - - "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/curve/fr" - "github.com/consensys/gnark/frontend" - twistededwards "github.com/consensys/gnark/frontend/std/reference/algebra/twisted_edwards" - "github.com/consensys/gnark/frontend/std/reference/signature/eddsa" -) - -func TestEddsaGadget(t *testing.T) { - - assert := frontend.NewAssert(t) - - edcurve := twistededwards.GetEdwardsCurve() - - var seed [32]byte - s := []byte("eddsa") - for i, v := range s { - seed[i] = v - } - - // create eddsa key pair and generate the signature - privKey, pubKey := eddsa.New(seed, edcurve) - - var msg fr.Element - msg.SetString("44717650746155748460101257525078853138837311576962212923649547644148297035978") - - signedMsg, err := eddsa.Sign(privKey, pubKey, msg) - if err != nil { - t.Fatal(err) - } - res, err := eddsa.Verify(pubKey, signedMsg, msg) - if err != nil { - t.Fatal(err) - } - if !res { - t.Fatal("verification should pass") - } - - // verify the signature in the circuit - circuit := frontend.New() - messageAllocated := circuit.SECRET_INPUT("message") - Verify(&circuit, pubKey, signedMsg, messageAllocated) - - // verification with the correct message - good := backend.NewAssignment() - good.Assign(backend.Secret, "message", "44717650746155748460101257525078853138837311576962212923649547644148297035978") - - assert.Solved(circuit, good, nil) - - // verification with incorrect message - bad := backend.NewAssignment() - bad.Assign(backend.Secret, "message", "44717650746155748460101257525078853138837311576962212923649547644148297035979") - assert.NotSolved(circuit, bad) -} diff --git a/internal/generators/backend/template/zkpschemes/groth16_utils.go b/internal/generators/backend/template/zkpschemes/groth16_utils.go index a46aace20..8277d1b00 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_utils.go +++ b/internal/generators/backend/template/zkpschemes/groth16_utils.go @@ -118,4 +118,26 @@ func (assert *Assert) CorrectExecution(r1cs *backend_{{toLower .Curve}}.R1CS, so assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_{{toLower .Curve}}) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } + +// ConsistantExpectedValues checks only the consistency against a map of expected values +func (assert *Assert) ConsistantExpectedValues(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + var root fr.Element + fftDomain := backend_{{toLower .Curve}}.NewDomain(root, backend_{{toLower .Curve}}.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_{{toLower .Curve}}) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_{{toLower .Curve}}) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) + } +} ` From 483fba16dcc1952bffa83230673413793c2a4235 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Wed, 15 Apr 2020 13:31:04 +0200 Subject: [PATCH 14/19] moved encoding from internal so it can be used from elsewhere --- backend/bls377/groth16/groth16_test.go | 2 +- backend/bls377/r1cs.go | 2 +- backend/bls381/groth16/groth16_test.go | 2 +- backend/bls381/r1cs.go | 2 +- backend/bn256/groth16/groth16_test.go | 2 +- backend/bn256/r1cs.go | 2 +- cmd/prove.go | 2 +- cmd/setup.go | 2 +- cmd/verify.go | 2 +- {internal/utils/encoding => encoding}/gob/gob.go | 0 internal/generators/backend/template/representations/r1cs.go | 2 +- .../generators/backend/template/zkpschemes/tests_groth16.go | 2 +- internal/generators/testcircuits/main.go | 2 +- 13 files changed, 12 insertions(+), 12 deletions(-) rename {internal/utils/encoding => encoding}/gob/gob.go (100%) diff --git a/backend/bls377/groth16/groth16_test.go b/backend/bls377/groth16/groth16_test.go index 674950a4b..1f9d91e3e 100644 --- a/backend/bls377/groth16/groth16_test.go +++ b/backend/bls377/groth16/groth16_test.go @@ -29,7 +29,7 @@ import ( "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gurvy" ) diff --git a/backend/bls377/r1cs.go b/backend/bls377/r1cs.go index 9df4baadb..38c24b238 100644 --- a/backend/bls377/r1cs.go +++ b/backend/bls377/r1cs.go @@ -27,7 +27,7 @@ import ( "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" ) // R1CS decsribes a set of R1CS constraint diff --git a/backend/bls381/groth16/groth16_test.go b/backend/bls381/groth16/groth16_test.go index 52a8e657a..c865f6d44 100644 --- a/backend/bls381/groth16/groth16_test.go +++ b/backend/bls381/groth16/groth16_test.go @@ -29,7 +29,7 @@ import ( "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gurvy" ) diff --git a/backend/bls381/r1cs.go b/backend/bls381/r1cs.go index 969ddc735..2b143699b 100644 --- a/backend/bls381/r1cs.go +++ b/backend/bls381/r1cs.go @@ -27,7 +27,7 @@ import ( "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" ) // R1CS decsribes a set of R1CS constraint diff --git a/backend/bn256/groth16/groth16_test.go b/backend/bn256/groth16/groth16_test.go index 19ade47cf..1137f2c4e 100644 --- a/backend/bn256/groth16/groth16_test.go +++ b/backend/bn256/groth16/groth16_test.go @@ -29,7 +29,7 @@ import ( "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gurvy" ) diff --git a/backend/bn256/r1cs.go b/backend/bn256/r1cs.go index 127c20f7b..5cd8fd5f7 100644 --- a/backend/bn256/r1cs.go +++ b/backend/bn256/r1cs.go @@ -27,7 +27,7 @@ import ( "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" ) // R1CS decsribes a set of R1CS constraint diff --git a/cmd/prove.go b/cmd/prove.go index e44107fd6..531353511 100644 --- a/cmd/prove.go +++ b/cmd/prove.go @@ -29,7 +29,7 @@ import ( groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" backend_bn256 "github.com/consensys/gnark/backend/bn256" groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gurvy" "github.com/spf13/cobra" ) diff --git a/cmd/setup.go b/cmd/setup.go index 7980b5380..52110b57e 100644 --- a/cmd/setup.go +++ b/cmd/setup.go @@ -28,7 +28,7 @@ import ( groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" backend_bn256 "github.com/consensys/gnark/backend/bn256" groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gurvy" "github.com/spf13/cobra" ) diff --git a/cmd/verify.go b/cmd/verify.go index b089c785c..869fd245c 100644 --- a/cmd/verify.go +++ b/cmd/verify.go @@ -26,7 +26,7 @@ import ( groth16_bls377 "github.com/consensys/gnark/backend/bls377/groth16" groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gurvy" "github.com/spf13/cobra" ) diff --git a/internal/utils/encoding/gob/gob.go b/encoding/gob/gob.go similarity index 100% rename from internal/utils/encoding/gob/gob.go rename to encoding/gob/gob.go diff --git a/internal/generators/backend/template/representations/r1cs.go b/internal/generators/backend/template/representations/r1cs.go index 4b0feddf3..656be7478 100644 --- a/internal/generators/backend/template/representations/r1cs.go +++ b/internal/generators/backend/template/representations/r1cs.go @@ -13,7 +13,7 @@ import ( {{end}} "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" ) // R1CS decsribes a set of R1CS constraint diff --git a/internal/generators/backend/template/zkpschemes/tests_groth16.go b/internal/generators/backend/template/zkpschemes/tests_groth16.go index 55b87042f..23168b359 100644 --- a/internal/generators/backend/template/zkpschemes/tests_groth16.go +++ b/internal/generators/backend/template/zkpschemes/tests_groth16.go @@ -11,7 +11,7 @@ import ( "strings" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gnark/backend" "github.com/consensys/gnark/frontend" "github.com/consensys/gurvy" diff --git a/internal/generators/testcircuits/main.go b/internal/generators/testcircuits/main.go index df3698a4f..f04dbeb74 100644 --- a/internal/generators/testcircuits/main.go +++ b/internal/generators/testcircuits/main.go @@ -5,7 +5,7 @@ import ( "os" "github.com/consensys/gnark/internal/generators/testcircuits/circuits" - "github.com/consensys/gnark/internal/utils/encoding/gob" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gurvy" ) From e396b0618f8aab6256e27e5bf72555a04211ea5a Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Wed, 15 Apr 2020 14:08:29 +0200 Subject: [PATCH 15/19] regenerated version :/ --- backend/bls377/groth16/groth16_test.go | 2 +- backend/bls377/groth16/utils.go | 22 ++++++++++++++++++++++ backend/bls377/r1cs.go | 2 +- backend/bls381/groth16/groth16_test.go | 2 +- backend/bls381/groth16/utils.go | 22 ++++++++++++++++++++++ backend/bls381/r1cs.go | 2 +- backend/bn256/groth16/groth16_test.go | 2 +- backend/bn256/groth16/utils.go | 2 -- backend/bn256/r1cs.go | 2 +- 9 files changed, 50 insertions(+), 8 deletions(-) diff --git a/backend/bls377/groth16/groth16_test.go b/backend/bls377/groth16/groth16_test.go index 1f9d91e3e..10133d406 100644 --- a/backend/bls377/groth16/groth16_test.go +++ b/backend/bls377/groth16/groth16_test.go @@ -28,8 +28,8 @@ import ( "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/encoding/gob" + "github.com/consensys/gnark/frontend" "github.com/consensys/gurvy" ) diff --git a/backend/bls377/groth16/utils.go b/backend/bls377/groth16/utils.go index 53e1e43f2..a0d012e28 100644 --- a/backend/bls377/groth16/utils.go +++ b/backend/bls377/groth16/utils.go @@ -136,3 +136,25 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bls377.R1CS, solution backe assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls377) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } + +// ConsistantExpectedValues checks only the consistency against a map of expected values +func (assert *Assert) ConsistantExpectedValues(r1cs *backend_bls377.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + var root fr.Element + fftDomain := backend_bls377.NewDomain(root, backend_bls377.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_bls377) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls377) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) + } +} diff --git a/backend/bls377/r1cs.go b/backend/bls377/r1cs.go index 38c24b238..ae9272501 100644 --- a/backend/bls377/r1cs.go +++ b/backend/bls377/r1cs.go @@ -25,9 +25,9 @@ import ( "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/encoding/gob" ) // R1CS decsribes a set of R1CS constraint diff --git a/backend/bls381/groth16/groth16_test.go b/backend/bls381/groth16/groth16_test.go index c865f6d44..bf3283c6c 100644 --- a/backend/bls381/groth16/groth16_test.go +++ b/backend/bls381/groth16/groth16_test.go @@ -28,8 +28,8 @@ import ( "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/encoding/gob" + "github.com/consensys/gnark/frontend" "github.com/consensys/gurvy" ) diff --git a/backend/bls381/groth16/utils.go b/backend/bls381/groth16/utils.go index 1f4dc85c7..835d0ae02 100644 --- a/backend/bls381/groth16/utils.go +++ b/backend/bls381/groth16/utils.go @@ -136,3 +136,25 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bls381.R1CS, solution backe assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls381) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } + +// ConsistantExpectedValues checks only the consistency against a map of expected values +func (assert *Assert) ConsistantExpectedValues(r1cs *backend_bls381.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { + var root fr.Element + fftDomain := backend_bls381.NewDomain(root, backend_bls381.MaxOrder, r1cs.NbConstraints) + + wireValues := make([]fr.Element, r1cs.NbWires) + a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) + + r1cs.Solve(solution, a, b, c, wireValues) + + res, err := r1cs.Inspect(wireValues) + assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") + + for k, v := range expectedValues { + val, ok := res[k] + assert.True(ok, "Variable to test <"+k+"> (backend_bls381) is not tagged") + assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls381) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) + } +} diff --git a/backend/bls381/r1cs.go b/backend/bls381/r1cs.go index 2b143699b..8f96f3b58 100644 --- a/backend/bls381/r1cs.go +++ b/backend/bls381/r1cs.go @@ -25,9 +25,9 @@ import ( "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/encoding/gob" ) // R1CS decsribes a set of R1CS constraint diff --git a/backend/bn256/groth16/groth16_test.go b/backend/bn256/groth16/groth16_test.go index 1137f2c4e..8f6a53eeb 100644 --- a/backend/bn256/groth16/groth16_test.go +++ b/backend/bn256/groth16/groth16_test.go @@ -28,8 +28,8 @@ import ( "testing" "github.com/consensys/gnark/backend" - "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/encoding/gob" + "github.com/consensys/gnark/frontend" "github.com/consensys/gurvy" ) diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go index 87d8639fb..7c5348599 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/utils.go @@ -57,8 +57,6 @@ func (assert *Assert) NotSolved(r1cs *backend_bn256.R1CS, solution backend.Assig assert.Error(err, "proving with bad solution should output an error") } -// TODO refactor the assertions (for instance for the gadgets we just want to check that the circuit is solved correctly, groth16 shouldn't be involved) - // Solved check that a solution solves a circuit // for each expectedValues, this helper compares the output from backend.Inspect() after Solving. // this helper also ensure the result vectors a*b=c diff --git a/backend/bn256/r1cs.go b/backend/bn256/r1cs.go index 5cd8fd5f7..0ed02a2bc 100644 --- a/backend/bn256/r1cs.go +++ b/backend/bn256/r1cs.go @@ -25,9 +25,9 @@ import ( "github.com/consensys/gnark/backend" + "github.com/consensys/gnark/encoding/gob" "github.com/consensys/gnark/frontend" "github.com/consensys/gnark/internal/utils/debug" - "github.com/consensys/gnark/encoding/gob" ) // R1CS decsribes a set of R1CS constraint From 1907ffadb24c9e4875f1c5a3ac62a0fad6fa2d42 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Wed, 15 Apr 2020 14:13:06 +0200 Subject: [PATCH 16/19] make gofmt happy... --- internal/generators/testcircuits/main.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/internal/generators/testcircuits/main.go b/internal/generators/testcircuits/main.go index f04dbeb74..e6b693307 100644 --- a/internal/generators/testcircuits/main.go +++ b/internal/generators/testcircuits/main.go @@ -4,8 +4,8 @@ import ( "fmt" "os" - "github.com/consensys/gnark/internal/generators/testcircuits/circuits" "github.com/consensys/gnark/encoding/gob" + "github.com/consensys/gnark/internal/generators/testcircuits/circuits" "github.com/consensys/gurvy" ) From 6fedfbb43ae461eae1cfb402bba83d511c2c1ee1 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Fri, 17 Apr 2020 19:43:51 +0200 Subject: [PATCH 17/19] Mimcs (cryptolib) implement the go Hash interface, code generation for the cryptolib --- backend/bn256/groth16/utils.go | 2 + .../merkle/{proof.go => proof.go.backup} | 0 .../{proof_test.go => proof_test.go.backup} | 0 cryptolib/hash/mimc/bls377/mimc_bls377.go | 169 +++++++--- cryptolib/hash/mimc/bls381/mimc_bls381.go | 173 +++++++--- cryptolib/hash/mimc/bn256/mimc_bn256.go | 169 +++++++--- cryptolib/internal/generator/generator.go | 40 +-- cryptolib/internal/main.go | 71 ++++- cryptolib/internal/template/eddsa.go | 4 +- cryptolib/internal/template/mimc.go | 298 ++++++++++++++++++ cryptolib/signature/eddsa/bls381/eddsa.go | 4 +- cryptolib/signature/eddsa/bn256/eddsa.go | 4 +- .../merkle/{proof.go => proof.go.backup} | 0 gadgets/algebra/twistededwards/point.go | 4 +- .../twistededwards/twisted_edwards_test.go | 29 ++ gadgets/hash/mimc/encrypt.go | 12 +- gadgets/hash/mimc/mimc_test.go | 10 +- gadgets/signature/eddsa/eddsa_test.go | 2 +- 18 files changed, 826 insertions(+), 165 deletions(-) rename cryptolib/accumulator/merkle/{proof.go => proof.go.backup} (100%) rename cryptolib/accumulator/merkle/{proof_test.go => proof_test.go.backup} (100%) create mode 100644 cryptolib/internal/template/mimc.go rename gadgets/accumulator/merkle/{proof.go => proof.go.backup} (100%) diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/utils.go index 7c5348599..20f550de6 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/utils.go @@ -17,6 +17,7 @@ package groth16 import ( + "fmt" "reflect" "testing" @@ -131,6 +132,7 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bn256.R1CS, solution backen assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") for k, v := range expectedValues { + fmt.Println(k + ": " + v.String()) val, ok := res[k] assert.True(ok, "Variable to test <"+k+"> (backend_bn256) is not tagged") assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bn256) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) diff --git a/cryptolib/accumulator/merkle/proof.go b/cryptolib/accumulator/merkle/proof.go.backup similarity index 100% rename from cryptolib/accumulator/merkle/proof.go rename to cryptolib/accumulator/merkle/proof.go.backup diff --git a/cryptolib/accumulator/merkle/proof_test.go b/cryptolib/accumulator/merkle/proof_test.go.backup similarity index 100% rename from cryptolib/accumulator/merkle/proof_test.go rename to cryptolib/accumulator/merkle/proof_test.go.backup diff --git a/cryptolib/hash/mimc/bls377/mimc_bls377.go b/cryptolib/hash/mimc/bls377/mimc_bls377.go index 01e0a4dd4..6f956d850 100644 --- a/cryptolib/hash/mimc/bls377/mimc_bls377.go +++ b/cryptolib/hash/mimc/bls377/mimc_bls377.go @@ -1,22 +1,24 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT package bls377 import ( + "encoding/binary" + "hash" "math/big" "github.com/consensys/gurvy/bls377/fr" @@ -25,19 +27,12 @@ import ( const mimcNbRounds = 91 -// MiMC reference implementation (pure Go) -type MiMC struct { - Params -} +// BlockSize size that mimc consumes +const BlockSize = 32 // Params constants for the mimc hash function type Params []fr.Element -// NewMiMC returns a MiMCImpl object, pure-go reference implementation -func NewMiMC(seed string) MiMC { - return MiMC{NewParams(seed)} -} - // NewParams creates new mimc object func NewParams(seed string) Params { @@ -56,31 +51,133 @@ func NewParams(seed string) Params { return res } +// digest represents the partial evaluation of the checksum +// along with the params of the mimc function +type digest struct { + Params Params + h fr.Element + data []byte // data to hash +} + +// NewMiMC returns a MiMCImpl object, pure-go reference implementation +func NewMiMC(seed string) hash.Hash { + d := new(digest) + params := NewParams(seed) + //d.Reset() + d.Params = params + d.Reset() + return d +} + +// Reset resets the Hash to its initial state. +func (d *digest) Reset() { + d.data = nil + d.h = fr.Element{0, 0, 0, 0} +} + +// Sum appends the current hash to b and returns the resulting slice. +// It does not change the underlying hash state. +func (d *digest) Sum(b []byte) []byte { + buffer := d.checksum() + d.data = nil // flush the data already hashed + hash := toBytes(buffer) + return append(b, hash[:]...) +} + +// BlockSize returns the hash's underlying block size. +// The Write method must be able to accept any amount +// of data, but it may operate more efficiently if all writes +// are a multiple of the block size. +func (d *digest) Size() int { + return BlockSize +} + +// BlockSize returns the number of bytes Sum will return. +func (d *digest) BlockSize() int { + return BlockSize +} + +// Write (via the embedded io.Writer interface) adds more data to the running hash. +// It never returns an error. +func (d *digest) Write(p []byte) (n int, err error) { + n = len(p) + d.data = append(d.data, p...) + return +} + +// toBytes converts a fr Element into a BlockSize bytes array +func toBytes(e fr.Element) [BlockSize]byte { + var res [BlockSize]byte + binary.BigEndian.PutUint64(res[:8], e[0]) + binary.BigEndian.PutUint64(res[8:16], e[1]) + binary.BigEndian.PutUint64(res[16:24], e[2]) + binary.BigEndian.PutUint64(res[24:], e[3]) + return res +} + +// fromBytes converts a fr Element into a BlockSize bytes array +func fromBytes(e [BlockSize]byte) fr.Element { + var res fr.Element + res[0] = binary.BigEndian.Uint64(e[:8]) + res[1] = binary.BigEndian.Uint64(e[8:16]) + res[2] = binary.BigEndian.Uint64(e[16:24]) + res[3] = binary.BigEndian.Uint64(e[24:]) + return res +} + // Hash hash using Miyaguchi–Preneel: // https://en.wikipedia.org/wiki/One-way_compression_function // The XOR operation is replaced by field addition, data is in Montgomery form -func (h MiMC) Hash(data ...fr.Element) fr.Element { +func (d *digest) checksum() fr.Element { + + var buffer [32]byte + + // if data size is not multiple of BlockSizes we padd + if len(d.data)%BlockSize != 0 { + for i := 0; i < BlockSize-len(d.data)%BlockSize; i++ { + d.data = append(d.data, 0) + } + } - var digest fr.Element + if len(d.data) == 0 { + for i := 0; i < BlockSize; i++ { + d.data = append(d.data, 0) + } + } + + nbChunks := len(d.data) / BlockSize - for _, stream := range data { - digest = h.encrypt(stream, digest) - digest.Add(&stream, &digest) + for i := 0; i < nbChunks; i++ { + copy(buffer[:], d.data[i*BlockSize:(i+1)*BlockSize]) + x := fromBytes(buffer) + d.encrypt(x) + d.h.Add(&x, &d.h) } - return digest + return d.h } // plain execution of a mimc run // m: message // k: encryption key -func (h MiMC) encrypt(m, k fr.Element) fr.Element { +func (d *digest) encrypt(m fr.Element) { - for _, cons := range h.Params { - // m = (m+k+c)**-1 - m.Add(&m, &k).Add(&m, &cons).Inverse(&m) + for _, cons := range d.Params { + // m = (m+k+c)^7 + m.Add(&m, &d.h).Add(&m, &cons).Inverse(&m) } - m.Add(&m, &k) - return m + m.Add(&m, &d.h) + d.h = m +} +// Sum computes the mimc hash of msg from seed +func Sum(seed string, msg []fr.Element) fr.Element { + params := NewParams(seed) + var d digest + d.Params = params + for _, stream := range msg { + tmp := toBytes(stream) + d.Write(tmp[:]) + } + return d.checksum() } diff --git a/cryptolib/hash/mimc/bls381/mimc_bls381.go b/cryptolib/hash/mimc/bls381/mimc_bls381.go index 1b4a92728..ac2240671 100644 --- a/cryptolib/hash/mimc/bls381/mimc_bls381.go +++ b/cryptolib/hash/mimc/bls381/mimc_bls381.go @@ -1,22 +1,24 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT package bls381 import ( + "encoding/binary" + "hash" "math/big" "github.com/consensys/gurvy/bls381/fr" @@ -25,19 +27,12 @@ import ( const mimcNbRounds = 91 -// MiMC reference implementation (pure Go) -type MiMC struct { - Params -} +// BlockSize size that mimc consumes +const BlockSize = 32 // Params constants for the mimc hash function type Params []fr.Element -// NewMiMC returns a MiMCImpl object, pure-go reference implementation -func NewMiMC(seed string) MiMC { - return MiMC{NewParams(seed)} -} - // NewParams creates new mimc object func NewParams(seed string) Params { @@ -56,33 +51,137 @@ func NewParams(seed string) Params { return res } +// digest represents the partial evaluation of the checksum +// along with the params of the mimc function +type digest struct { + Params Params + h fr.Element + data []byte // data to hash +} + +// NewMiMC returns a MiMCImpl object, pure-go reference implementation +func NewMiMC(seed string) hash.Hash { + d := new(digest) + params := NewParams(seed) + //d.Reset() + d.Params = params + d.Reset() + return d +} + +// Reset resets the Hash to its initial state. +func (d *digest) Reset() { + d.data = nil + d.h = fr.Element{0, 0, 0, 0} +} + +// Sum appends the current hash to b and returns the resulting slice. +// It does not change the underlying hash state. +func (d *digest) Sum(b []byte) []byte { + buffer := d.checksum() + d.data = nil // flush the data already hashed + hash := toBytes(buffer) + return append(b, hash[:]...) +} + +// BlockSize returns the hash's underlying block size. +// The Write method must be able to accept any amount +// of data, but it may operate more efficiently if all writes +// are a multiple of the block size. +func (d *digest) Size() int { + return BlockSize +} + +// BlockSize returns the number of bytes Sum will return. +func (d *digest) BlockSize() int { + return BlockSize +} + +// Write (via the embedded io.Writer interface) adds more data to the running hash. +// It never returns an error. +func (d *digest) Write(p []byte) (n int, err error) { + n = len(p) + d.data = append(d.data, p...) + return +} + +// toBytes converts a fr Element into a BlockSize bytes array +func toBytes(e fr.Element) [BlockSize]byte { + var res [BlockSize]byte + binary.BigEndian.PutUint64(res[:8], e[0]) + binary.BigEndian.PutUint64(res[8:16], e[1]) + binary.BigEndian.PutUint64(res[16:24], e[2]) + binary.BigEndian.PutUint64(res[24:], e[3]) + return res +} + +// fromBytes converts a fr Element into a BlockSize bytes array +func fromBytes(e [BlockSize]byte) fr.Element { + var res fr.Element + res[0] = binary.BigEndian.Uint64(e[:8]) + res[1] = binary.BigEndian.Uint64(e[8:16]) + res[2] = binary.BigEndian.Uint64(e[16:24]) + res[3] = binary.BigEndian.Uint64(e[24:]) + return res +} + // Hash hash using Miyaguchi–Preneel: // https://en.wikipedia.org/wiki/One-way_compression_function // The XOR operation is replaced by field addition, data is in Montgomery form -func (h MiMC) Hash(data ...fr.Element) fr.Element { +func (d *digest) checksum() fr.Element { + + var buffer [32]byte + + // if data size is not multiple of BlockSizes we padd + if len(d.data)%BlockSize != 0 { + for i := 0; i < BlockSize-len(d.data)%BlockSize; i++ { + d.data = append(d.data, 0) + } + } - var digest fr.Element + if len(d.data) == 0 { + for i := 0; i < BlockSize; i++ { + d.data = append(d.data, 0) + } + } + + nbChunks := len(d.data) / BlockSize - for _, stream := range data { - digest = h.encrypt(stream, digest) - digest.Add(&stream, &digest) + for i := 0; i < nbChunks; i++ { + copy(buffer[:], d.data[i*BlockSize:(i+1)*BlockSize]) + x := fromBytes(buffer) + d.encrypt(x) + d.h.Add(&x, &d.h) } - return digest + return d.h } // plain execution of a mimc run // m: message // k: encryption key -func (h MiMC) encrypt(m, k fr.Element) fr.Element { +func (d *digest) encrypt(m fr.Element) { - for _, cons := range h.Params { + for _, cons := range d.Params { + // m = (m+k+c)^7 var tmp fr.Element - // m = (m+k+c)**5 - tmp.Add(&m, &k).Add(&tmp, &cons) - m.Square(&tmp).Square(&m).Mul(&m, &tmp) + tmp.Add(&m, &d.h).Add(&tmp, &cons) + m.Square(&tmp). + Square(&m). + Mul(&m, &tmp) } - m.Add(&m, &k) - return m + m.Add(&m, &d.h) + d.h = m +} +// Sum computes the mimc hash of msg from seed +func Sum(seed string, msg []fr.Element) fr.Element { + params := NewParams(seed) + var d digest + d.Params = params + for _, stream := range msg { + tmp := toBytes(stream) + d.Write(tmp[:]) + } + return d.checksum() } diff --git a/cryptolib/hash/mimc/bn256/mimc_bn256.go b/cryptolib/hash/mimc/bn256/mimc_bn256.go index f4939ef0e..bbdb684ba 100644 --- a/cryptolib/hash/mimc/bn256/mimc_bn256.go +++ b/cryptolib/hash/mimc/bn256/mimc_bn256.go @@ -1,22 +1,24 @@ -/* -Copyright © 2020 ConsenSys - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ +// Copyright 2020 ConsenSys AG +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT package bn256 import ( + "encoding/binary" + "hash" "math/big" "github.com/consensys/gurvy/bn256/fr" @@ -25,21 +27,14 @@ import ( const mimcNbRounds = 91 -// MiMC reference implementation (pure Go) -type MiMC struct { - Params -} +// BlockSize size that mimc consumes +const BlockSize = 32 // Params constants for the mimc hash function type Params []fr.Element -// NewMiMC returns a MiMCImpl object, pure-go reference implementation -func NewMiMC(seed string) MiMC { - return MiMC{newParams(seed)} -} - // NewParams creates new mimc object -func newParams(seed string) Params { +func NewParams(seed string) Params { // set the constants res := make(Params, mimcNbRounds) @@ -56,36 +51,138 @@ func newParams(seed string) Params { return res } +// digest represents the partial evaluation of the checksum +// along with the params of the mimc function +type digest struct { + Params Params + h fr.Element + data []byte // data to hash +} + +// NewMiMC returns a MiMCImpl object, pure-go reference implementation +func NewMiMC(seed string) hash.Hash { + d := new(digest) + params := NewParams(seed) + //d.Reset() + d.Params = params + d.Reset() + return d +} + +// Reset resets the Hash to its initial state. +func (d *digest) Reset() { + d.data = nil + d.h = fr.Element{0, 0, 0, 0} +} + +// Sum appends the current hash to b and returns the resulting slice. +// It does not change the underlying hash state. +func (d *digest) Sum(b []byte) []byte { + buffer := d.checksum() + d.data = nil // flush the data already hashed + hash := toBytes(buffer) + return append(b, hash[:]...) +} + +// BlockSize returns the hash's underlying block size. +// The Write method must be able to accept any amount +// of data, but it may operate more efficiently if all writes +// are a multiple of the block size. +func (d *digest) Size() int { + return BlockSize +} + +// BlockSize returns the number of bytes Sum will return. +func (d *digest) BlockSize() int { + return BlockSize +} + +// Write (via the embedded io.Writer interface) adds more data to the running hash. +// It never returns an error. +func (d *digest) Write(p []byte) (n int, err error) { + n = len(p) + d.data = append(d.data, p...) + return +} + +// toBytes converts a fr Element into a BlockSize bytes array +func toBytes(e fr.Element) [BlockSize]byte { + var res [BlockSize]byte + binary.BigEndian.PutUint64(res[:8], e[0]) + binary.BigEndian.PutUint64(res[8:16], e[1]) + binary.BigEndian.PutUint64(res[16:24], e[2]) + binary.BigEndian.PutUint64(res[24:], e[3]) + return res +} + +// fromBytes converts a fr Element into a BlockSize bytes array +func fromBytes(e [BlockSize]byte) fr.Element { + var res fr.Element + res[0] = binary.BigEndian.Uint64(e[:8]) + res[1] = binary.BigEndian.Uint64(e[8:16]) + res[2] = binary.BigEndian.Uint64(e[16:24]) + res[3] = binary.BigEndian.Uint64(e[24:]) + return res +} + // Hash hash using Miyaguchi–Preneel: // https://en.wikipedia.org/wiki/One-way_compression_function // The XOR operation is replaced by field addition, data is in Montgomery form -func (h MiMC) Hash(data ...fr.Element) fr.Element { +func (d *digest) checksum() fr.Element { + + var buffer [32]byte + + // if data size is not multiple of BlockSizes we padd + if len(d.data)%BlockSize != 0 { + for i := 0; i < BlockSize-len(d.data)%BlockSize; i++ { + d.data = append(d.data, 0) + } + } - var digest fr.Element + if len(d.data) == 0 { + for i := 0; i < BlockSize; i++ { + d.data = append(d.data, 0) + } + } + + nbChunks := len(d.data) / BlockSize - for _, stream := range data { - digest = h.encrypt(stream, digest) - digest.Add(&stream, &digest) + for i := 0; i < nbChunks; i++ { + copy(buffer[:], d.data[i*BlockSize:(i+1)*BlockSize]) + x := fromBytes(buffer) + d.encrypt(x) + d.h.Add(&x, &d.h) } - return digest + return d.h } // plain execution of a mimc run // m: message // k: encryption key -func (h MiMC) encrypt(m, k fr.Element) fr.Element { +func (d *digest) encrypt(m fr.Element) { - for _, cons := range h.Params { + for _, cons := range d.Params { // m = (m+k+c)^7 var tmp fr.Element - tmp.Add(&m, &k).Add(&tmp, &cons) + tmp.Add(&m, &d.h).Add(&tmp, &cons) m.Square(&tmp). Mul(&m, &tmp). Square(&m). Mul(&m, &tmp) } - m.Add(&m, &k) - return m + m.Add(&m, &d.h) + d.h = m +} +// Sum computes the mimc hash of msg from seed +func Sum(seed string, msg []fr.Element) fr.Element { + params := NewParams(seed) + var d digest + d.Params = params + for _, stream := range msg { + tmp := toBytes(stream) + d.Write(tmp[:]) + } + return d.checksum() } diff --git a/cryptolib/internal/generator/generator.go b/cryptolib/internal/generator/generator.go index 5bd48e515..bb95cdc3c 100644 --- a/cryptolib/internal/generator/generator.go +++ b/cryptolib/internal/generator/generator.go @@ -5,13 +5,15 @@ import ( "strings" "github.com/consensys/bavard" - "github.com/consensys/gnark/cryptolib/internal/template" ) // Data meta data for template generation type Data struct { - Curve string - Path string + Curve string + Path string + FileName string + Src []string + Package string } // Generate template generator @@ -24,31 +26,13 @@ func Generate(d Data) error { fmt.Println("generating crpyptolib for ", d.Curve) fmt.Println() - { - // generate eddsa - src := []string{ - template.EddsaTemplate, - } - if err := bavard.Generate(d.Path+"eddsa.go", src, d, - bavard.Package("eddsa"), - bavard.Apache2("ConsenSys AG", 2020), - bavard.GeneratedBy("gnark/cryptolib/internal/generator"), - ); err != nil { - return err - } - } - { - // generate eddsa tests - src := []string{ - template.EddsaTest, - } - if err := bavard.Generate(d.Path+"eddsa_test.go", src, d, - bavard.Package("eddsa"), - bavard.Apache2("ConsenSys AG", 2020), - bavard.GeneratedBy("gnark/cryptolib/internal/generator"), - ); err != nil { - return err - } + if err := bavard.Generate(d.Path+d.FileName, d.Src, d, + bavard.Package(d.Package), + bavard.Apache2("ConsenSys AG", 2020), + bavard.GeneratedBy("gnark/cryptolib/internal/generator"), + ); err != nil { + return err } + return nil } diff --git a/cryptolib/internal/main.go b/cryptolib/internal/main.go index 948ae8f73..2d790a446 100644 --- a/cryptolib/internal/main.go +++ b/cryptolib/internal/main.go @@ -4,22 +4,79 @@ import ( "os" "github.com/consensys/gnark/cryptolib/internal/generator" + "github.com/consensys/gnark/cryptolib/internal/template" ) //go:generate go run -tags debug main.go func main() { - bls381 := generator.Data{ - Curve: "BLS381", - Path: "../signature/eddsa/bls381/", + // ----------------------------------------------------- + // eddsa files + eddsabls381 := generator.Data{ + Curve: "BLS381", + Path: "../signature/eddsa/bls381/", + FileName: "eddsa.go", + Src: []string{template.EddsaTemplate}, + Package: "eddsa", + } + eddsabls381Test := generator.Data{ + Curve: "BLS381", + Path: "../signature/eddsa/bls381/", + FileName: "eddsa_test.go", + Src: []string{template.EddsaTest}, + Package: "eddsa", } - bn256 := generator.Data{ - Curve: "BN256", - Path: "../signature/eddsa/bn256/", + eddsabn256 := generator.Data{ + Curve: "BN256", + Path: "../signature/eddsa/bn256/", + FileName: "eddsa.go", + Src: []string{template.EddsaTemplate}, + Package: "eddsa", + } + eddsabn256Test := generator.Data{ + Curve: "BN256", + Path: "../signature/eddsa/bn256/", + FileName: "eddsa_test.go", + Src: []string{template.EddsaTest}, + Package: "eddsa", } - data := []generator.Data{bls381, bn256} + // ----------------------------------------------------- + // mimc files + mimcbn256 := generator.Data{ + Curve: "BN256", + Path: "../hash/mimc/bn256/", + FileName: "mimc_bn256.go", + Src: []string{template.MimcCommon, template.MimcPerCurve, template.Encrypt}, + Package: "bn256", + } + + mimcbls381 := generator.Data{ + Curve: "BLS381", + Path: "../hash/mimc/bls381/", + FileName: "mimc_bls381.go", + Src: []string{template.MimcCommon, template.MimcPerCurve, template.Encrypt}, + Package: "bls381", + } + + mimcbls377 := generator.Data{ + Curve: "BLS377", + Path: "../hash/mimc/bls377/", + FileName: "mimc_bls377.go", + Src: []string{template.MimcCommon, template.MimcPerCurve, template.Encrypt}, + Package: "bls377", + } + + data := []generator.Data{ + eddsabls381, + eddsabls381Test, + eddsabn256, + eddsabn256Test, + mimcbn256, + mimcbls381, + mimcbls377, + } for _, d := range data { if err := os.MkdirAll(d.Path, 0700); err != nil { diff --git a/cryptolib/internal/template/eddsa.go b/cryptolib/internal/template/eddsa.go index 5655475f4..3073a8cd2 100644 --- a/cryptolib/internal/template/eddsa.go +++ b/cryptolib/internal/template/eddsa.go @@ -119,7 +119,7 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { message, } - hram := {{toLower .Curve}}.NewMiMC("seed").Hash(data...) + hram := {{toLower .Curve}}.Sum("seed", data) hram.FromMont() // Compute s = randScalarInt + H(R,A,M)*S @@ -153,7 +153,7 @@ func Verify(sig Signature, message fr.Element, pub PublicKey, params *twistededw pub.A.Y, message, } - hram := {{toLower .Curve}}.NewMiMC("seed").Hash(data...) + hram := {{toLower .Curve}}.Sum("seed",data) hram.FromMont() // lhs = cofactor*S*Base diff --git a/cryptolib/internal/template/mimc.go b/cryptolib/internal/template/mimc.go new file mode 100644 index 000000000..37eb41ac5 --- /dev/null +++ b/cryptolib/internal/template/mimc.go @@ -0,0 +1,298 @@ +package template + +const Encrypt = ` + +{{ define "encrypt" }} + +{{ if eq .Curve "BN256" }} + // plain execution of a mimc run + // m: message + // k: encryption key + func (d *digest) encrypt(m fr.Element) { + + for _, cons := range d.Params { + // m = (m+k+c)^7 + var tmp fr.Element + tmp.Add(&m, &d.h).Add(&tmp, &cons) + m.Square(&tmp). + Mul(&m, &tmp). + Square(&m). + Mul(&m, &tmp) + } + m.Add(&m, &d.h) + d.h = m + } +{{ else if eq .Curve "BLS381" }} + // plain execution of a mimc run + // m: message + // k: encryption key + func (d *digest) encrypt(m fr.Element) { + + for _, cons := range d.Params { + // m = (m+k+c)^7 + var tmp fr.Element + tmp.Add(&m, &d.h).Add(&tmp, &cons) + m.Square(&tmp). + Square(&m). + Mul(&m, &tmp) + } + m.Add(&m, &d.h) + d.h = m + } +{{ else if eq .Curve "BLS377" }} + // plain execution of a mimc run + // m: message + // k: encryption key + func (d *digest) encrypt(m fr.Element) { + + for _, cons := range d.Params { + // m = (m+k+c)^7 + m.Add(&m, &d.h).Add(&m, &cons).Inverse(&m) + } + m.Add(&m, &d.h) + d.h = m + } +{{end}} + +{{end}} + +` + +const MimcPerCurve = ` + +{{ define "mimc_custom" }} + +{{ if eq .Curve "BN256" }} + import ( + "encoding/binary" + "hash" + "math/big" + + "github.com/consensys/gurvy/bn256/fr" + "golang.org/x/crypto/sha3" + ) + + const mimcNbRounds = 91 + + // BlockSize size that mimc consumes + const BlockSize = 32 + + // Params constants for the mimc hash function + type Params []fr.Element + + // NewParams creates new mimc object + func NewParams(seed string) Params { + + // set the constants + res := make(Params, mimcNbRounds) + + rnd := sha3.Sum256([]byte(seed)) + value := new(big.Int).SetBytes(rnd[:]) + + for i := 0; i < mimcNbRounds; i++ { + rnd = sha3.Sum256(value.Bytes()) + value.SetBytes(rnd[:]) + res[i].SetBigInt(value) + } + + return res + } +{{ else if eq .Curve "BLS377" }} + import ( + "encoding/binary" + "hash" + "math/big" + + "github.com/consensys/gurvy/bls377/fr" + "golang.org/x/crypto/sha3" + ) + + const mimcNbRounds = 91 + + // BlockSize size that mimc consumes + const BlockSize = 32 + + // Params constants for the mimc hash function + type Params []fr.Element + + // NewParams creates new mimc object + func NewParams(seed string) Params { + + // set the constants + res := make(Params, mimcNbRounds) + + rnd := sha3.Sum256([]byte(seed)) + value := new(big.Int).SetBytes(rnd[:]) + + for i := 0; i < mimcNbRounds; i++ { + rnd = sha3.Sum256(value.Bytes()) + value.SetBytes(rnd[:]) + res[i].SetBigInt(value) + } + + return res + } +{{ else if eq .Curve "BLS381" }} + import ( + "encoding/binary" + "hash" + "math/big" + + "github.com/consensys/gurvy/bls381/fr" + "golang.org/x/crypto/sha3" + ) + + const mimcNbRounds = 91 + + // BlockSize size that mimc consumes + const BlockSize = 32 + + // Params constants for the mimc hash function + type Params []fr.Element + + // NewParams creates new mimc object + func NewParams(seed string) Params { + + // set the constants + res := make(Params, mimcNbRounds) + + rnd := sha3.Sum256([]byte(seed)) + value := new(big.Int).SetBytes(rnd[:]) + + for i := 0; i < mimcNbRounds; i++ { + rnd = sha3.Sum256(value.Bytes()) + value.SetBytes(rnd[:]) + res[i].SetBigInt(value) + } + + return res + } +{{end}} + +{{end}} +` + +const MimcCommon = ` + +{{ template "mimc_custom" . }} + +// digest represents the partial evaluation of the checksum +// along with the params of the mimc function +type digest struct { + Params Params + h fr.Element + data []byte // data to hash +} + +// NewMiMC returns a MiMCImpl object, pure-go reference implementation +func NewMiMC(seed string) hash.Hash { + d := new(digest) + params := NewParams(seed) + //d.Reset() + d.Params = params + d.Reset() + return d +} + +// Reset resets the Hash to its initial state. +func (d *digest) Reset() { + d.data = nil + d.h = fr.Element{0, 0, 0, 0} +} + +// Sum appends the current hash to b and returns the resulting slice. +// It does not change the underlying hash state. +func (d *digest) Sum(b []byte) []byte { + buffer := d.checksum() + d.data = nil // flush the data already hashed + hash := toBytes(buffer) + return append(b, hash[:]...) +} + +// BlockSize returns the hash's underlying block size. +// The Write method must be able to accept any amount +// of data, but it may operate more efficiently if all writes +// are a multiple of the block size. +func (d *digest) Size() int { + return BlockSize +} + +// BlockSize returns the number of bytes Sum will return. +func (d *digest) BlockSize() int { + return BlockSize +} + +// Write (via the embedded io.Writer interface) adds more data to the running hash. +// It never returns an error. +func (d *digest) Write(p []byte) (n int, err error) { + n = len(p) + d.data = append(d.data, p...) + return +} + +// toBytes converts a fr Element into a BlockSize bytes array +func toBytes(e fr.Element) [BlockSize]byte { + var res [BlockSize]byte + binary.BigEndian.PutUint64(res[:8], e[0]) + binary.BigEndian.PutUint64(res[8:16], e[1]) + binary.BigEndian.PutUint64(res[16:24], e[2]) + binary.BigEndian.PutUint64(res[24:], e[3]) + return res +} + +// fromBytes converts a fr Element into a BlockSize bytes array +func fromBytes(e [BlockSize]byte) fr.Element { + var res fr.Element + res[0] = binary.BigEndian.Uint64(e[:8]) + res[1] = binary.BigEndian.Uint64(e[8:16]) + res[2] = binary.BigEndian.Uint64(e[16:24]) + res[3] = binary.BigEndian.Uint64(e[24:]) + return res +} + +// Hash hash using Miyaguchi–Preneel: +// https://en.wikipedia.org/wiki/One-way_compression_function +// The XOR operation is replaced by field addition, data is in Montgomery form +func (d *digest) checksum() fr.Element { + + var buffer [32]byte + + // if data size is not multiple of BlockSizes we padd + if len(d.data)%BlockSize != 0 { + for i := 0; i < BlockSize-len(d.data)%BlockSize; i++ { + d.data = append(d.data, 0) + } + } + + if len(d.data) == 0 { + for i := 0; i < BlockSize; i++ { + d.data = append(d.data, 0) + } + } + + nbChunks := len(d.data) / BlockSize + + for i := 0; i < nbChunks; i++ { + copy(buffer[:], d.data[i*BlockSize:(i+1)*BlockSize]) + x := fromBytes(buffer) + d.encrypt(x) + d.h.Add(&x, &d.h) + } + + return d.h +} + +{{ template "encrypt" . }} + +// Sum computes the mimc hash of msg from seed +func Sum(seed string, msg []fr.Element) fr.Element { + params := NewParams(seed) + var d digest + d.Params = params + for _, stream := range msg { + tmp := toBytes(stream) + d.Write(tmp[:]) + } + return d.checksum() +} +` diff --git a/cryptolib/signature/eddsa/bls381/eddsa.go b/cryptolib/signature/eddsa/bls381/eddsa.go index ddcd3a8f0..2ea38c7bc 100644 --- a/cryptolib/signature/eddsa/bls381/eddsa.go +++ b/cryptolib/signature/eddsa/bls381/eddsa.go @@ -133,7 +133,7 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { message, } - hram := bls381.NewMiMC("seed").Hash(data...) + hram := bls381.Sum("seed", data) hram.FromMont() // Compute s = randScalarInt + H(R,A,M)*S @@ -167,7 +167,7 @@ func Verify(sig Signature, message fr.Element, pub PublicKey, params *twistededw pub.A.Y, message, } - hram := bls381.NewMiMC("seed").Hash(data...) + hram := bls381.Sum("seed", data) hram.FromMont() // lhs = cofactor*S*Base diff --git a/cryptolib/signature/eddsa/bn256/eddsa.go b/cryptolib/signature/eddsa/bn256/eddsa.go index 3de930002..804f43b8d 100644 --- a/cryptolib/signature/eddsa/bn256/eddsa.go +++ b/cryptolib/signature/eddsa/bn256/eddsa.go @@ -133,7 +133,7 @@ func (eddsaObj Eddsa) Sign(message fr.Element) (Signature, error) { message, } - hram := bn256.NewMiMC("seed").Hash(data...) + hram := bn256.Sum("seed", data) hram.FromMont() // Compute s = randScalarInt + H(R,A,M)*S @@ -167,7 +167,7 @@ func Verify(sig Signature, message fr.Element, pub PublicKey, params *twistededw pub.A.Y, message, } - hram := bn256.NewMiMC("seed").Hash(data...) + hram := bn256.Sum("seed", data) hram.FromMont() // lhs = cofactor*S*Base diff --git a/gadgets/accumulator/merkle/proof.go b/gadgets/accumulator/merkle/proof.go.backup similarity index 100% rename from gadgets/accumulator/merkle/proof.go rename to gadgets/accumulator/merkle/proof.go.backup diff --git a/gadgets/algebra/twistededwards/point.go b/gadgets/algebra/twistededwards/point.go index ba4aceca3..18368bed8 100644 --- a/gadgets/algebra/twistededwards/point.go +++ b/gadgets/algebra/twistededwards/point.go @@ -49,9 +49,9 @@ func NewPointGadget(circuit *frontend.CS, _x, _y interface{}) PointGadget { } } -// IsOnCurveGadget checks if a point is on the twisted Edwards curve +// MustBeOnCurveGadget checks if a point is on the twisted Edwards curve // ax^2 + y^2 = 1 + d*x^2*y^2 -func (p *PointGadget) IsOnCurveGadget(circuit *frontend.CS, curve EdCurveGadget) { +func (p *PointGadget) MustBeOnCurveGadget(circuit *frontend.CS, curve EdCurveGadget) { debug.Assert(p.X != nil && p.Y != nil, "point not initialized") diff --git a/gadgets/algebra/twistededwards/twisted_edwards_test.go b/gadgets/algebra/twistededwards/twisted_edwards_test.go index 893529e1c..755183267 100644 --- a/gadgets/algebra/twistededwards/twisted_edwards_test.go +++ b/gadgets/algebra/twistededwards/twisted_edwards_test.go @@ -27,6 +27,35 @@ import ( fr_bn256 "github.com/consensys/gurvy/bn256/fr" ) +func TestIsOnCurve(t *testing.T) { + + circuit := frontend.New() + + assertbn256 := groth16_bn256.NewAssert(t) + + // get edwards curve gadget + edgadget, err := NewEdCurveGadget(&circuit, gurvy.BN256) + if err != nil { + t.Fatal(err) + } + + // set the Snark point + pointSnark := NewPointGadget(&circuit, circuit.SECRET_INPUT("x"), circuit.SECRET_INPUT("y")) + + pointSnark.MustBeOnCurveGadget(&circuit, edgadget) + + inputs := backend.NewAssignment() + inputs.Assign(backend.Secret, "x", edgadget.BaseX) + inputs.Assign(backend.Secret, "y", edgadget.BaseY) + + // creates r1cs + _r1cs := circuit.ToR1CS() + r1csbn256 := backend_bn256.New(_r1cs) + + assertbn256.CorrectExecution(&r1csbn256, inputs, nil) + +} + func TestAdd(t *testing.T) { circuit := frontend.New() diff --git a/gadgets/hash/mimc/encrypt.go b/gadgets/hash/mimc/encrypt.go index 49e3b973f..205f0c43d 100644 --- a/gadgets/hash/mimc/encrypt.go +++ b/gadgets/hash/mimc/encrypt.go @@ -47,8 +47,8 @@ func init() { func newMimcBLS377(seed string) MiMCGadget { res := MiMCGadget{} - tmp := bls377.NewMiMC(seed) - for _, v := range tmp.Params { + params := bls377.NewParams(seed) + for _, v := range params { var cpy big.Int v.ToBigIntRegular(&cpy) res.Params = append(res.Params, cpy) @@ -59,8 +59,8 @@ func newMimcBLS377(seed string) MiMCGadget { func newMimcBLS381(seed string) MiMCGadget { res := MiMCGadget{} - tmp := bls381.NewMiMC(seed) - for _, v := range tmp.Params { + params := bls381.NewParams(seed) + for _, v := range params { var cpy big.Int v.ToBigIntRegular(&cpy) res.Params = append(res.Params, cpy) @@ -71,8 +71,8 @@ func newMimcBLS381(seed string) MiMCGadget { func newMimcBN256(seed string) MiMCGadget { res := MiMCGadget{} - tmp := bn256.NewMiMC(seed) - for _, v := range tmp.Params { + params := bn256.NewParams(seed) + for _, v := range params { var cpy big.Int v.ToBigIntRegular(&cpy) res.Params = append(res.Params, cpy) diff --git a/gadgets/hash/mimc/mimc_test.go b/gadgets/hash/mimc/mimc_test.go index 46285c6d1..b1512a249 100644 --- a/gadgets/hash/mimc/mimc_test.go +++ b/gadgets/hash/mimc/mimc_test.go @@ -47,8 +47,6 @@ func TestMimcBN256(t *testing.T) { assertbn256 := groth16_bn256.NewAssert(t) // input - var data big.Int - data.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487", 10) var databn256 fr_bn256.Element databn256.SetString("7808462342289447506325013279997289618334122576263655295146895675168642919487") @@ -65,11 +63,11 @@ func TestMimcBN256(t *testing.T) { // running MiMC (Go) expectedValues := make(map[string]fr_bn256.Element) - expectedValues["res"] = mimcbn256.NewMiMC("seed").Hash(databn256) + expectedValues["res"] = mimcbn256.Sum("seed", []fr_bn256.Element{databn256}) // provide inputs to the circuit inputs := backend.NewAssignment() - inputs.Assign(backend.Public, "data", data) + inputs.Assign(backend.Public, "data", databn256) // creates r1cs _r1cs := circuit.ToR1CS() @@ -102,7 +100,7 @@ func TestMimcBLS381(t *testing.T) { // running MiMC (Go) expectedValues := make(map[string]fr_bls381.Element) - expectedValues["res"] = mimcbls381.NewMiMC("seed").Hash(databls381) + expectedValues["res"] = mimcbls381.Sum("seed", []fr_bls381.Element{databls381}) // provide inputs to the circuit inputs := backend.NewAssignment() @@ -139,7 +137,7 @@ func TestMimcBLS377(t *testing.T) { // running MiMC (Go) expectedValues := make(map[string]fr_bls377.Element) - expectedValues["res"] = mimcbls377.NewMiMC("seed").Hash(databls377) + expectedValues["res"] = mimcbls377.Sum("seed", []fr_bls377.Element{databls377}) // provide inputs to the circuit inputs := backend.NewAssignment() diff --git a/gadgets/signature/eddsa/eddsa_test.go b/gadgets/signature/eddsa/eddsa_test.go index 226cf95df..4a76bd067 100644 --- a/gadgets/signature/eddsa/eddsa_test.go +++ b/gadgets/signature/eddsa/eddsa_test.go @@ -55,7 +55,7 @@ func TestEddsaGadget(t *testing.T) { t.Fatal(err) } if !res { - //t.Fatal("Verifying the signature should return true") + t.Fatal("Verifying the signature should return true") } // Set the eddsa circuit and the gadget From e0ff260561135840470ac7659de2531cabbb7830 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Mon, 20 Apr 2020 14:55:54 +0200 Subject: [PATCH 18/19] backend: cleaned asserts --- .../bls377/groth16/{utils.go => assert.go} | 22 ----------------- .../bls381/groth16/{utils.go => assert.go} | 22 ----------------- backend/bn256/groth16/{utils.go => assert.go} | 24 ------------------- .../backend/template/generator/generator.go | 2 +- .../template/zkpschemes/groth16_utils.go | 21 ---------------- 5 files changed, 1 insertion(+), 90 deletions(-) rename backend/bls377/groth16/{utils.go => assert.go} (82%) rename backend/bls381/groth16/{utils.go => assert.go} (82%) rename backend/bn256/groth16/{utils.go => assert.go} (82%) diff --git a/backend/bls377/groth16/utils.go b/backend/bls377/groth16/assert.go similarity index 82% rename from backend/bls377/groth16/utils.go rename to backend/bls377/groth16/assert.go index a0d012e28..53e1e43f2 100644 --- a/backend/bls377/groth16/utils.go +++ b/backend/bls377/groth16/assert.go @@ -136,25 +136,3 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bls377.R1CS, solution backe assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls377) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } - -// ConsistantExpectedValues checks only the consistency against a map of expected values -func (assert *Assert) ConsistantExpectedValues(r1cs *backend_bls377.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { - var root fr.Element - fftDomain := backend_bls377.NewDomain(root, backend_bls377.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - - res, err := r1cs.Inspect(wireValues) - assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") - - for k, v := range expectedValues { - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> (backend_bls377) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls377) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) - } -} diff --git a/backend/bls381/groth16/utils.go b/backend/bls381/groth16/assert.go similarity index 82% rename from backend/bls381/groth16/utils.go rename to backend/bls381/groth16/assert.go index 835d0ae02..1f4dc85c7 100644 --- a/backend/bls381/groth16/utils.go +++ b/backend/bls381/groth16/assert.go @@ -136,25 +136,3 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bls381.R1CS, solution backe assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls381) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) } } - -// ConsistantExpectedValues checks only the consistency against a map of expected values -func (assert *Assert) ConsistantExpectedValues(r1cs *backend_bls381.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { - var root fr.Element - fftDomain := backend_bls381.NewDomain(root, backend_bls381.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - - res, err := r1cs.Inspect(wireValues) - assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") - - for k, v := range expectedValues { - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> (backend_bls381) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bls381) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) - } -} diff --git a/backend/bn256/groth16/utils.go b/backend/bn256/groth16/assert.go similarity index 82% rename from backend/bn256/groth16/utils.go rename to backend/bn256/groth16/assert.go index 20f550de6..b5dc8155d 100644 --- a/backend/bn256/groth16/utils.go +++ b/backend/bn256/groth16/assert.go @@ -17,7 +17,6 @@ package groth16 import ( - "fmt" "reflect" "testing" @@ -131,29 +130,6 @@ func (assert *Assert) CorrectExecution(r1cs *backend_bn256.R1CS, solution backen res, err := r1cs.Inspect(wireValues) assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") - for k, v := range expectedValues { - fmt.Println(k + ": " + v.String()) - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> (backend_bn256) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_bn256) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) - } -} - -// ConsistantExpectedValues checks only the consistency against a map of expected values -func (assert *Assert) ConsistantExpectedValues(r1cs *backend_bn256.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { - var root fr.Element - fftDomain := backend_bn256.NewDomain(root, backend_bn256.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - - res, err := r1cs.Inspect(wireValues) - assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") - for k, v := range expectedValues { val, ok := res[k] assert.True(ok, "Variable to test <"+k+"> (backend_bn256) is not tagged") diff --git a/internal/generators/backend/template/generator/generator.go b/internal/generators/backend/template/generator/generator.go index aac61464a..fca6b67ab 100644 --- a/internal/generators/backend/template/generator/generator.go +++ b/internal/generators/backend/template/generator/generator.go @@ -122,7 +122,7 @@ func GenerateGroth16(d GenerateData) error { templates.ImportCurve, zkpschemes.Groth16Assert, } - if err := bavard.Generate(d.RootPath+"groth16/utils.go", src, d, + if err := bavard.Generate(d.RootPath+"groth16/assert.go", src, d, bavard.Package("groth16"), bavard.Apache2("ConsenSys AG", 2020), bavard.GeneratedBy("gnark/internal/generators"), diff --git a/internal/generators/backend/template/zkpschemes/groth16_utils.go b/internal/generators/backend/template/zkpschemes/groth16_utils.go index 8277d1b00..6d944b2bc 100644 --- a/internal/generators/backend/template/zkpschemes/groth16_utils.go +++ b/internal/generators/backend/template/zkpschemes/groth16_utils.go @@ -119,25 +119,4 @@ func (assert *Assert) CorrectExecution(r1cs *backend_{{toLower .Curve}}.R1CS, so } } -// ConsistantExpectedValues checks only the consistency against a map of expected values -func (assert *Assert) ConsistantExpectedValues(r1cs *backend_{{toLower .Curve}}.R1CS, solution backend.Assignments, expectedValues map[string]fr.Element) { - var root fr.Element - fftDomain := backend_{{toLower .Curve}}.NewDomain(root, backend_{{toLower .Curve}}.MaxOrder, r1cs.NbConstraints) - - wireValues := make([]fr.Element, r1cs.NbWires) - a := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - b := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - c := make([]fr.Element, r1cs.NbConstraints, fftDomain.Cardinality) - - r1cs.Solve(solution, a, b, c, wireValues) - - res, err := r1cs.Inspect(wireValues) - assert.Nil(err, "Inspecting the tagged variables of a constraint system with correct inputs should not output an error") - - for k, v := range expectedValues { - val, ok := res[k] - assert.True(ok, "Variable to test <"+k+"> (backend_{{toLower .Curve}}) is not tagged") - assert.True(val.Equal(&v), "Tagged variable <"+k+"> (backend_{{toLower .Curve}}) does not have the expected value\nexpected: "+v.String()+"\ngot:\t "+val.String()) - } -} ` From 2150ebe12698393807cea132eaee7ed8fc16a226 Mon Sep 17 00:00:00 2001 From: Thomas Piellard Date: Fri, 24 Apr 2020 14:19:38 +0200 Subject: [PATCH 19/19] fixes #23 -r1cs.go(backend): added a method to cast from a generic r1cs (with bigInt); added a method to create a r1cs direcly without having to create a frontend's r1cs and then convert it to a specialized field Fr - moved cryptolib/, replaced it by crypto/ - fixed the tags --- backend/bls377/groth16/groth16_test.go | 2 +- backend/bls377/r1cs.go | 12 ++++++++- backend/bls381/groth16/groth16_test.go | 2 +- backend/bls381/r1cs.go | 12 ++++++++- backend/bn256/groth16/groth16_test.go | 2 +- backend/bn256/r1cs.go | 12 ++++++++- cmd/version.go | 2 +- .../accumulator/merkle/errors.go | 0 .../accumulator/merkle/proof.go.backup | 0 .../accumulator/merkle/proof_test.go.backup | 0 .../hash/mimc/bls377/mimc_bls377.go | 2 +- .../hash/mimc/bls381/mimc_bls381.go | 2 +- .../hash/mimc/bn256/mimc_bn256.go | 3 ++- .../internal/generator/generator.go | 2 +- {cryptolib => crypto}/internal/main.go | 4 +-- .../internal/template/eddsa.go | 2 +- .../internal/template/mimc.go | 0 .../internal/template/test_eddsa.go | 0 .../signature/eddsa/bls381/eddsa.go | 4 +-- .../signature/eddsa/bls381/eddsa_test.go | 2 +- .../signature/eddsa/bn256/eddsa.go | 4 +-- .../signature/eddsa/bn256/eddsa_test.go | 2 +- examples/cubic/cubic.go | 4 +-- examples/exponentiate/exponentiate.go | 3 +-- examples/mimc/mimc.go | 3 +-- gadgets/algebra/twistededwards/ed.py | 27 +++++++++++++++++++ .../twistededwards/twisted_edwards_test.go | 18 +++++-------- gadgets/hash/mimc/encrypt.go | 6 ++--- gadgets/hash/mimc/mimc_test.go | 15 +++++------ gadgets/signature/eddsa/eddsa_test.go | 5 ++-- go.mod | 6 +++-- internal/benchmark/benchmark/main.go | 3 +-- .../backend/template/representations/r1cs.go | 18 ++++++++++--- .../template/zkpschemes/tests_groth16.go | 2 +- 34 files changed, 118 insertions(+), 63 deletions(-) rename {cryptolib => crypto}/accumulator/merkle/errors.go (100%) rename {cryptolib => crypto}/accumulator/merkle/proof.go.backup (100%) rename {cryptolib => crypto}/accumulator/merkle/proof_test.go.backup (100%) rename {cryptolib => crypto}/hash/mimc/bls377/mimc_bls377.go (98%) rename {cryptolib => crypto}/hash/mimc/bls381/mimc_bls381.go (98%) rename {cryptolib => crypto}/hash/mimc/bn256/mimc_bn256.go (96%) rename {cryptolib => crypto}/internal/generator/generator.go (91%) rename {cryptolib => crypto}/internal/main.go (94%) rename {cryptolib => crypto}/internal/template/eddsa.go (98%) rename {cryptolib => crypto}/internal/template/mimc.go (100%) rename {cryptolib => crypto}/internal/template/test_eddsa.go (100%) rename {cryptolib => crypto}/signature/eddsa/bls381/eddsa.go (97%) rename {cryptolib => crypto}/signature/eddsa/bls381/eddsa_test.go (95%) rename {cryptolib => crypto}/signature/eddsa/bn256/eddsa.go (97%) rename {cryptolib => crypto}/signature/eddsa/bn256/eddsa_test.go (95%) create mode 100644 gadgets/algebra/twistededwards/ed.py diff --git a/backend/bls377/groth16/groth16_test.go b/backend/bls377/groth16/groth16_test.go index 10133d406..12e805bd5 100644 --- a/backend/bls377/groth16/groth16_test.go +++ b/backend/bls377/groth16/groth16_test.go @@ -60,7 +60,7 @@ func TestCircuits(t *testing.T) { if err := gob.Read(name+".r1cs", &fr1cs, gurvy.UNKNOWN); err != nil { t.Fatal(err) } - r1cs := backend_bls377.New(&fr1cs) + r1cs := backend_bls377.Cast(&fr1cs) assert.NotSolved(&r1cs, bad) assert.Solved(&r1cs, good, nil) } diff --git a/backend/bls377/r1cs.go b/backend/bls377/r1cs.go index ae9272501..51712dd43 100644 --- a/backend/bls377/r1cs.go +++ b/backend/bls377/r1cs.go @@ -47,7 +47,17 @@ type R1CS struct { } // New return a typed R1CS with the curve from frontend.R1CS -func New(r1cs *frontend.R1CS) R1CS { +func New(cs *frontend.CS) R1CS { + + r1cs := cs.ToR1CS() + + return Cast(r1cs) +} + +// Cast casts a frontend.R1CS (whose coefficients are big.Int) +// into a specialized R1CS whose coefficients are fr elements +func Cast(r1cs *frontend.R1CS) R1CS { + toReturn := R1CS{ NbWires: r1cs.NbWires, NbPublicWires: r1cs.NbPublicWires, diff --git a/backend/bls381/groth16/groth16_test.go b/backend/bls381/groth16/groth16_test.go index bf3283c6c..cf7c52e16 100644 --- a/backend/bls381/groth16/groth16_test.go +++ b/backend/bls381/groth16/groth16_test.go @@ -60,7 +60,7 @@ func TestCircuits(t *testing.T) { if err := gob.Read(name+".r1cs", &fr1cs, gurvy.UNKNOWN); err != nil { t.Fatal(err) } - r1cs := backend_bls381.New(&fr1cs) + r1cs := backend_bls381.Cast(&fr1cs) assert.NotSolved(&r1cs, bad) assert.Solved(&r1cs, good, nil) } diff --git a/backend/bls381/r1cs.go b/backend/bls381/r1cs.go index 8f96f3b58..abb586a30 100644 --- a/backend/bls381/r1cs.go +++ b/backend/bls381/r1cs.go @@ -47,7 +47,17 @@ type R1CS struct { } // New return a typed R1CS with the curve from frontend.R1CS -func New(r1cs *frontend.R1CS) R1CS { +func New(cs *frontend.CS) R1CS { + + r1cs := cs.ToR1CS() + + return Cast(r1cs) +} + +// Cast casts a frontend.R1CS (whose coefficients are big.Int) +// into a specialized R1CS whose coefficients are fr elements +func Cast(r1cs *frontend.R1CS) R1CS { + toReturn := R1CS{ NbWires: r1cs.NbWires, NbPublicWires: r1cs.NbPublicWires, diff --git a/backend/bn256/groth16/groth16_test.go b/backend/bn256/groth16/groth16_test.go index 8f6a53eeb..b7ea7315a 100644 --- a/backend/bn256/groth16/groth16_test.go +++ b/backend/bn256/groth16/groth16_test.go @@ -60,7 +60,7 @@ func TestCircuits(t *testing.T) { if err := gob.Read(name+".r1cs", &fr1cs, gurvy.UNKNOWN); err != nil { t.Fatal(err) } - r1cs := backend_bn256.New(&fr1cs) + r1cs := backend_bn256.Cast(&fr1cs) assert.NotSolved(&r1cs, bad) assert.Solved(&r1cs, good, nil) } diff --git a/backend/bn256/r1cs.go b/backend/bn256/r1cs.go index 0ed02a2bc..810115804 100644 --- a/backend/bn256/r1cs.go +++ b/backend/bn256/r1cs.go @@ -47,7 +47,17 @@ type R1CS struct { } // New return a typed R1CS with the curve from frontend.R1CS -func New(r1cs *frontend.R1CS) R1CS { +func New(cs *frontend.CS) R1CS { + + r1cs := cs.ToR1CS() + + return Cast(r1cs) +} + +// Cast casts a frontend.R1CS (whose coefficients are big.Int) +// into a specialized R1CS whose coefficients are fr elements +func Cast(r1cs *frontend.R1CS) R1CS { + toReturn := R1CS{ NbWires: r1cs.NbWires, NbPublicWires: r1cs.NbPublicWires, diff --git a/cmd/version.go b/cmd/version.go index d3452644c..5db4a913c 100644 --- a/cmd/version.go +++ b/cmd/version.go @@ -16,4 +16,4 @@ package cmd -const Version = "1.0.0-alpha" +const Version = "v0.1.0-alpha" diff --git a/cryptolib/accumulator/merkle/errors.go b/crypto/accumulator/merkle/errors.go similarity index 100% rename from cryptolib/accumulator/merkle/errors.go rename to crypto/accumulator/merkle/errors.go diff --git a/cryptolib/accumulator/merkle/proof.go.backup b/crypto/accumulator/merkle/proof.go.backup similarity index 100% rename from cryptolib/accumulator/merkle/proof.go.backup rename to crypto/accumulator/merkle/proof.go.backup diff --git a/cryptolib/accumulator/merkle/proof_test.go.backup b/crypto/accumulator/merkle/proof_test.go.backup similarity index 100% rename from cryptolib/accumulator/merkle/proof_test.go.backup rename to crypto/accumulator/merkle/proof_test.go.backup diff --git a/cryptolib/hash/mimc/bls377/mimc_bls377.go b/crypto/hash/mimc/bls377/mimc_bls377.go similarity index 98% rename from cryptolib/hash/mimc/bls377/mimc_bls377.go rename to crypto/hash/mimc/bls377/mimc_bls377.go index 6f956d850..a6ba461b1 100644 --- a/cryptolib/hash/mimc/bls377/mimc_bls377.go +++ b/crypto/hash/mimc/bls377/mimc_bls377.go @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT +// Code generated by gnark/crypto/internal/generator DO NOT EDIT package bls377 diff --git a/cryptolib/hash/mimc/bls381/mimc_bls381.go b/crypto/hash/mimc/bls381/mimc_bls381.go similarity index 98% rename from cryptolib/hash/mimc/bls381/mimc_bls381.go rename to crypto/hash/mimc/bls381/mimc_bls381.go index ac2240671..511fa79cb 100644 --- a/cryptolib/hash/mimc/bls381/mimc_bls381.go +++ b/crypto/hash/mimc/bls381/mimc_bls381.go @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT +// Code generated by gnark/crypto/internal/generator DO NOT EDIT package bls381 diff --git a/cryptolib/hash/mimc/bn256/mimc_bn256.go b/crypto/hash/mimc/bn256/mimc_bn256.go similarity index 96% rename from cryptolib/hash/mimc/bn256/mimc_bn256.go rename to crypto/hash/mimc/bn256/mimc_bn256.go index bbdb684ba..fa17e3a6d 100644 --- a/cryptolib/hash/mimc/bn256/mimc_bn256.go +++ b/crypto/hash/mimc/bn256/mimc_bn256.go @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT +// Code generated by gnark/crypto/internal/generator DO NOT EDIT package bn256 @@ -79,6 +79,7 @@ func (d *digest) Reset() { // It does not change the underlying hash state. func (d *digest) Sum(b []byte) []byte { buffer := d.checksum() + // TODO not sure we should keep this, it should be up to the caller to actually reset the hash function d.data = nil // flush the data already hashed hash := toBytes(buffer) return append(b, hash[:]...) diff --git a/cryptolib/internal/generator/generator.go b/crypto/internal/generator/generator.go similarity index 91% rename from cryptolib/internal/generator/generator.go rename to crypto/internal/generator/generator.go index bb95cdc3c..7cfc27da9 100644 --- a/cryptolib/internal/generator/generator.go +++ b/crypto/internal/generator/generator.go @@ -29,7 +29,7 @@ func Generate(d Data) error { if err := bavard.Generate(d.Path+d.FileName, d.Src, d, bavard.Package(d.Package), bavard.Apache2("ConsenSys AG", 2020), - bavard.GeneratedBy("gnark/cryptolib/internal/generator"), + bavard.GeneratedBy("gnark/crypto/internal/generator"), ); err != nil { return err } diff --git a/cryptolib/internal/main.go b/crypto/internal/main.go similarity index 94% rename from cryptolib/internal/main.go rename to crypto/internal/main.go index 2d790a446..06585b8cb 100644 --- a/cryptolib/internal/main.go +++ b/crypto/internal/main.go @@ -3,8 +3,8 @@ package main import ( "os" - "github.com/consensys/gnark/cryptolib/internal/generator" - "github.com/consensys/gnark/cryptolib/internal/template" + "github.com/consensys/gnark/crypto/internal/generator" + "github.com/consensys/gnark/crypto/internal/template" ) //go:generate go run -tags debug main.go diff --git a/cryptolib/internal/template/eddsa.go b/crypto/internal/template/eddsa.go similarity index 98% rename from cryptolib/internal/template/eddsa.go rename to crypto/internal/template/eddsa.go index 3073a8cd2..fb7593229 100644 --- a/cryptolib/internal/template/eddsa.go +++ b/crypto/internal/template/eddsa.go @@ -8,7 +8,7 @@ import ( "errors" "math/big" - "github.com/consensys/gnark/cryptolib/hash/mimc/{{toLower .Curve}}" + "github.com/consensys/gnark/crypto/hash/mimc/{{toLower .Curve}}" "github.com/consensys/gurvy/{{toLower .Curve}}/fr" "github.com/consensys/gurvy/{{toLower .Curve}}/twistededwards" "golang.org/x/crypto/blake2b" diff --git a/cryptolib/internal/template/mimc.go b/crypto/internal/template/mimc.go similarity index 100% rename from cryptolib/internal/template/mimc.go rename to crypto/internal/template/mimc.go diff --git a/cryptolib/internal/template/test_eddsa.go b/crypto/internal/template/test_eddsa.go similarity index 100% rename from cryptolib/internal/template/test_eddsa.go rename to crypto/internal/template/test_eddsa.go diff --git a/cryptolib/signature/eddsa/bls381/eddsa.go b/crypto/signature/eddsa/bls381/eddsa.go similarity index 97% rename from cryptolib/signature/eddsa/bls381/eddsa.go rename to crypto/signature/eddsa/bls381/eddsa.go index 2ea38c7bc..5a2f54cd4 100644 --- a/cryptolib/signature/eddsa/bls381/eddsa.go +++ b/crypto/signature/eddsa/bls381/eddsa.go @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT +// Code generated by gnark/crypto/internal/generator DO NOT EDIT package eddsa @@ -22,7 +22,7 @@ import ( "errors" "math/big" - "github.com/consensys/gnark/cryptolib/hash/mimc/bls381" + "github.com/consensys/gnark/crypto/hash/mimc/bls381" "github.com/consensys/gurvy/bls381/fr" "github.com/consensys/gurvy/bls381/twistededwards" "golang.org/x/crypto/blake2b" diff --git a/cryptolib/signature/eddsa/bls381/eddsa_test.go b/crypto/signature/eddsa/bls381/eddsa_test.go similarity index 95% rename from cryptolib/signature/eddsa/bls381/eddsa_test.go rename to crypto/signature/eddsa/bls381/eddsa_test.go index a978b701a..92d28ee39 100644 --- a/cryptolib/signature/eddsa/bls381/eddsa_test.go +++ b/crypto/signature/eddsa/bls381/eddsa_test.go @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT +// Code generated by gnark/crypto/internal/generator DO NOT EDIT package eddsa diff --git a/cryptolib/signature/eddsa/bn256/eddsa.go b/crypto/signature/eddsa/bn256/eddsa.go similarity index 97% rename from cryptolib/signature/eddsa/bn256/eddsa.go rename to crypto/signature/eddsa/bn256/eddsa.go index 804f43b8d..147054642 100644 --- a/cryptolib/signature/eddsa/bn256/eddsa.go +++ b/crypto/signature/eddsa/bn256/eddsa.go @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT +// Code generated by gnark/crypto/internal/generator DO NOT EDIT package eddsa @@ -22,7 +22,7 @@ import ( "errors" "math/big" - "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" + "github.com/consensys/gnark/crypto/hash/mimc/bn256" "github.com/consensys/gurvy/bn256/fr" "github.com/consensys/gurvy/bn256/twistededwards" "golang.org/x/crypto/blake2b" diff --git a/cryptolib/signature/eddsa/bn256/eddsa_test.go b/crypto/signature/eddsa/bn256/eddsa_test.go similarity index 95% rename from cryptolib/signature/eddsa/bn256/eddsa_test.go rename to crypto/signature/eddsa/bn256/eddsa_test.go index 8f68f6c41..9a3ae5aa8 100644 --- a/cryptolib/signature/eddsa/bn256/eddsa_test.go +++ b/crypto/signature/eddsa/bn256/eddsa_test.go @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. -// Code generated by gnark/cryptolib/internal/generator DO NOT EDIT +// Code generated by gnark/crypto/internal/generator DO NOT EDIT package eddsa diff --git a/examples/cubic/cubic.go b/examples/cubic/cubic.go index 4f3f29b7c..8c350c263 100644 --- a/examples/cubic/cubic.go +++ b/examples/cubic/cubic.go @@ -25,8 +25,6 @@ func New() *backend_bn256.R1CS { x3.Tag("x^3") // we can tag a variable for testing and / or debugging purposes, it has no impact on performances circuit.MUSTBE_EQ(y, circuit.ADD(x3, x, 5)) - _r1cs := circuit.ToR1CS() - - r1cs := backend_bn256.New(_r1cs) + r1cs := backend_bn256.New(&circuit) return &r1cs } diff --git a/examples/exponentiate/exponentiate.go b/examples/exponentiate/exponentiate.go index 50f53186f..b7099db59 100644 --- a/examples/exponentiate/exponentiate.go +++ b/examples/exponentiate/exponentiate.go @@ -46,8 +46,7 @@ func New() *backend_bn256.R1CS { circuit.MUSTBE_EQ(y, output) - _r1cs := circuit.ToR1CS() - r1cs := backend_bn256.New(_r1cs) + r1cs := backend_bn256.New(&circuit) return &r1cs } diff --git a/examples/mimc/mimc.go b/examples/mimc/mimc.go index 179266d84..9e40908d0 100644 --- a/examples/mimc/mimc.go +++ b/examples/mimc/mimc.go @@ -29,8 +29,7 @@ func New() *backend_bn256.R1CS { // mimc(preImage) == hash circuit.MUSTBE_EQ(hash, mimc.Hash(&circuit, preImage)) - _r1cs := circuit.ToR1CS() - r1cs := backend_bn256.New(_r1cs) + r1cs := backend_bn256.New(&circuit) return &r1cs } diff --git a/gadgets/algebra/twistededwards/ed.py b/gadgets/algebra/twistededwards/ed.py new file mode 100644 index 000000000..98342c68d --- /dev/null +++ b/gadgets/algebra/twistededwards/ed.py @@ -0,0 +1,27 @@ +class point: + def __init__(self, x, y): + self.x = x + self.y = y + +class edCurve: + def __init__(self, a, d, base): + self.a = a + self.d = d + self.base = base + + def add(self, p1, p2): + res = point(Fr(0), Fr(0)) + res.x = (p1.x*p2.y+p1.y*p2.x)*(Fr(1)+self.d*p1.x*p2.x*p1.y*p2.y)**-1 + res.y = (p1.y*p2.y - self.a*p1.x*p2.x)*(Fr(1)-self.d*p1.x*p2.x*p1.y*p2.y)**-1 + return res + + def neg(self, p1): + res = point(0,0) + res.x = -p1.x + res.y = p1.y + return res + + def isOnCurve(self, p1): + l = self.a*p1.x**2+p1.y**2 + r = Fr(1) + self.d*p1.x**2*p1.y**2 + return l==r diff --git a/gadgets/algebra/twistededwards/twisted_edwards_test.go b/gadgets/algebra/twistededwards/twisted_edwards_test.go index 755183267..468e9bcd2 100644 --- a/gadgets/algebra/twistededwards/twisted_edwards_test.go +++ b/gadgets/algebra/twistededwards/twisted_edwards_test.go @@ -49,8 +49,7 @@ func TestIsOnCurve(t *testing.T) { inputs.Assign(backend.Secret, "y", edgadget.BaseY) // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbn256 := backend_bn256.New(_r1cs) + r1csbn256 := backend_bn256.New(&circuit) assertbn256.CorrectExecution(&r1csbn256, inputs, nil) @@ -88,8 +87,7 @@ func TestAdd(t *testing.T) { expectedValues["yg"] = expectedv // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbn256 := backend_bn256.New(_r1cs) + r1csbn256 := backend_bn256.New(&circuit) assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) } @@ -129,8 +127,7 @@ func TestAddGeneric(t *testing.T) { expectedValues["yg"] = expectedv // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbn256 := backend_bn256.New(_r1cs) + r1csbn256 := backend_bn256.New(&circuit) assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) } @@ -166,8 +163,7 @@ func TestDouble(t *testing.T) { expectedValues["yg"] = expectedv // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbn256 := backend_bn256.New(_r1cs) + r1csbn256 := backend_bn256.New(&circuit) assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) } @@ -207,8 +203,7 @@ func TestScalarMulFixedBase(t *testing.T) { expectedValues["yg"] = expectedv // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbn256 := backend_bn256.New(_r1cs) + r1csbn256 := backend_bn256.New(&circuit) assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) } @@ -248,8 +243,7 @@ func TestScalarMulNonFixedBase(t *testing.T) { expectedValues["yg"] = expectedv // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbn256 := backend_bn256.New(_r1cs) + r1csbn256 := backend_bn256.New(&circuit) assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) } diff --git a/gadgets/hash/mimc/encrypt.go b/gadgets/hash/mimc/encrypt.go index 205f0c43d..8328f94fc 100644 --- a/gadgets/hash/mimc/encrypt.go +++ b/gadgets/hash/mimc/encrypt.go @@ -19,9 +19,9 @@ package mimc import ( "math/big" - "github.com/consensys/gnark/cryptolib/hash/mimc/bls377" - "github.com/consensys/gnark/cryptolib/hash/mimc/bls381" - "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" + "github.com/consensys/gnark/crypto/hash/mimc/bls377" + "github.com/consensys/gnark/crypto/hash/mimc/bls381" + "github.com/consensys/gnark/crypto/hash/mimc/bn256" "github.com/consensys/gnark/frontend" "github.com/consensys/gurvy" diff --git a/gadgets/hash/mimc/mimc_test.go b/gadgets/hash/mimc/mimc_test.go index b1512a249..4566d2e5d 100644 --- a/gadgets/hash/mimc/mimc_test.go +++ b/gadgets/hash/mimc/mimc_test.go @@ -32,9 +32,9 @@ import ( groth16_bls381 "github.com/consensys/gnark/backend/bls381/groth16" groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" - mimcbls377 "github.com/consensys/gnark/cryptolib/hash/mimc/bls377" - mimcbls381 "github.com/consensys/gnark/cryptolib/hash/mimc/bls381" - mimcbn256 "github.com/consensys/gnark/cryptolib/hash/mimc/bn256" + mimcbls377 "github.com/consensys/gnark/crypto/hash/mimc/bls377" + mimcbls381 "github.com/consensys/gnark/crypto/hash/mimc/bls381" + mimcbn256 "github.com/consensys/gnark/crypto/hash/mimc/bn256" fr_bls377 "github.com/consensys/gurvy/bls377/fr" fr_bls381 "github.com/consensys/gurvy/bls381/fr" @@ -70,8 +70,7 @@ func TestMimcBN256(t *testing.T) { inputs.Assign(backend.Public, "data", databn256) // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbn256 := backend_bn256.New(_r1cs) + r1csbn256 := backend_bn256.New(&circuit) assertbn256.CorrectExecution(&r1csbn256, inputs, expectedValues) @@ -107,8 +106,7 @@ func TestMimcBLS381(t *testing.T) { inputs.Assign(backend.Public, "data", data) // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbls381 := backend_bls381.New(_r1cs) + r1csbls381 := backend_bls381.New(&circuit) assertbls381.CorrectExecution(&r1csbls381, inputs, expectedValues) @@ -144,8 +142,7 @@ func TestMimcBLS377(t *testing.T) { inputs.Assign(backend.Public, "data", data) // creates r1cs - _r1cs := circuit.ToR1CS() - r1csbls377 := backend_bls377.New(_r1cs) + r1csbls377 := backend_bls377.New(&circuit) assertbls377.CorrectExecution(&r1csbls377, inputs, expectedValues) diff --git a/gadgets/signature/eddsa/eddsa_test.go b/gadgets/signature/eddsa/eddsa_test.go index 4a76bd067..6b0933080 100644 --- a/gadgets/signature/eddsa/eddsa_test.go +++ b/gadgets/signature/eddsa/eddsa_test.go @@ -22,7 +22,7 @@ import ( "github.com/consensys/gnark/backend" backend_bn256 "github.com/consensys/gnark/backend/bn256" groth16_bn256 "github.com/consensys/gnark/backend/bn256/groth16" - eddsa_bn256 "github.com/consensys/gnark/cryptolib/signature/eddsa/bn256" + eddsa_bn256 "github.com/consensys/gnark/crypto/signature/eddsa/bn256" "github.com/consensys/gnark/frontend" twistededwards_gadget "github.com/consensys/gnark/gadgets/algebra/twistededwards" "github.com/consensys/gurvy" @@ -96,8 +96,7 @@ func TestEddsaGadget(t *testing.T) { SMont.Set(&signature.S).ToMont() good.Assign(backend.Public, "sigS", SMont) - _r1cs := circuit.ToR1CS() - r1cs := backend_bn256.New(_r1cs) + r1cs := backend_bn256.New(&circuit) assert.CorrectExecution(&r1cs, good, nil) diff --git a/go.mod b/go.mod index 31e67f123..46856faab 100644 --- a/go.mod +++ b/go.mod @@ -4,10 +4,12 @@ go 1.14 require ( github.com/consensys/bavard v0.1.1 + github.com/consensys/goff v0.2.2 // indirect github.com/consensys/gurvy v0.1.2-0.20200409125542-5a798b9a0bb3 github.com/pkg/profile v1.4.0 - github.com/spf13/cobra v0.0.7 + github.com/spf13/cobra v1.0.0 github.com/stretchr/testify v1.5.1 - golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 + gitlab.com/NebulousLabs/merkletree v0.0.0-20200118113624-07fbf710afc4 + golang.org/x/crypto v0.0.0-20200109152110-61a87790db17 gopkg.in/yaml.v2 v2.2.8 // indirect ) diff --git a/internal/benchmark/benchmark/main.go b/internal/benchmark/benchmark/main.go index 931a3d8fa..54a846aaa 100644 --- a/internal/benchmark/benchmark/main.go +++ b/internal/benchmark/benchmark/main.go @@ -78,8 +78,7 @@ func generateCircuit(nbConstraints int) (groth16.ProvingKey, backend_bn256.R1CS, // setup var pk groth16.ProvingKey var vk groth16.VerifyingKey - _r1cs := circuit.ToR1CS() - r1cs := backend_bn256.New(_r1cs) + r1cs := backend_bn256.New(&circuit) groth16.Setup(&r1cs, &pk, &vk) return pk, r1cs, solution diff --git a/internal/generators/backend/template/representations/r1cs.go b/internal/generators/backend/template/representations/r1cs.go index 656be7478..512bf880d 100644 --- a/internal/generators/backend/template/representations/r1cs.go +++ b/internal/generators/backend/template/representations/r1cs.go @@ -33,7 +33,17 @@ type R1CS struct { } // New return a typed R1CS with the curve from frontend.R1CS -func New(r1cs *frontend.R1CS) R1CS { +func New(cs *frontend.CS) R1CS { + + r1cs := cs.ToR1CS() + + return Cast(r1cs) +} + +// Cast casts a frontend.R1CS (whose coefficients are big.Int) +// into a specialized R1CS whose coefficients are fr elements +func Cast(r1cs *frontend.R1CS) R1CS { + toReturn := R1CS{ NbWires: r1cs.NbWires, NbPublicWires: r1cs.NbPublicWires, @@ -54,15 +64,15 @@ func New(r1cs *frontend.R1CS) R1CS { O: make(LinearExpression, len(from.O)), } - for j:=0;j