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luffa.go
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luffa.go
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// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package luffa
import (
"fmt"
"github.com/MatrixAINetwork/go-matrix/crypto/x11/hash"
)
// HashSize holds the size of a hash in bytes.
const HashSize = int(64)
// BlockSize holds the size of a block in bytes.
const BlockSize = uintptr(32)
////////////////
type digest struct {
ptr uintptr
h [5][8]uint32
b [32]byte
}
// New returns a new digest compute a LUFFA512 hash.
func New() hash.Digest {
ref := &digest{}
ref.Reset()
return ref
}
////////////////
// Reset resets the digest to its initial state.
func (ref *digest) Reset() {
ref.ptr = 0
for x := range kInit {
for y := range kInit[x] {
ref.h[x][y] = kInit[x][y]
}
}
}
// Sum appends the current hash to dst and returns the result
// as a slice. It does not change the underlying hash state.
func (ref *digest) Sum(dst []byte) []byte {
dgt := *ref
hsh := [64]byte{}
dgt.Close(hsh[:], 0, 0)
return append(dst, hsh[:]...)
}
// Write more data to the running hash, never returns an error.
func (ref *digest) Write(src []byte) (int, error) {
sln := uintptr(len(src))
fln := len(src)
buf := ref.b[:]
ptr := ref.ptr
if sln < (BlockSize - ptr) {
copy(ref.b[ptr:], src)
ref.ptr += sln
return int(sln), nil
}
var V00, V01, V02, V03, V04, V05, V06, V07 uint32
var V10, V11, V12, V13, V14, V15, V16, V17 uint32
var V20, V21, V22, V23, V24, V25, V26, V27 uint32
var V30, V31, V32, V33, V34, V35, V36, V37 uint32
var V40, V41, V42, V43, V44, V45, V46, V47 uint32
V00 = ref.h[0][0]
V01 = ref.h[0][1]
V02 = ref.h[0][2]
V03 = ref.h[0][3]
V04 = ref.h[0][4]
V05 = ref.h[0][5]
V06 = ref.h[0][6]
V07 = ref.h[0][7]
V10 = ref.h[1][0]
V11 = ref.h[1][1]
V12 = ref.h[1][2]
V13 = ref.h[1][3]
V14 = ref.h[1][4]
V15 = ref.h[1][5]
V16 = ref.h[1][6]
V17 = ref.h[1][7]
V20 = ref.h[2][0]
V21 = ref.h[2][1]
V22 = ref.h[2][2]
V23 = ref.h[2][3]
V24 = ref.h[2][4]
V25 = ref.h[2][5]
V26 = ref.h[2][6]
V27 = ref.h[2][7]
V30 = ref.h[3][0]
V31 = ref.h[3][1]
V32 = ref.h[3][2]
V33 = ref.h[3][3]
V34 = ref.h[3][4]
V35 = ref.h[3][5]
V36 = ref.h[3][6]
V37 = ref.h[3][7]
V40 = ref.h[4][0]
V41 = ref.h[4][1]
V42 = ref.h[4][2]
V43 = ref.h[4][3]
V44 = ref.h[4][4]
V45 = ref.h[4][5]
V46 = ref.h[4][6]
V47 = ref.h[4][7]
for sln > 0 {
cln := BlockSize - ptr
if cln > sln {
cln = sln
}
sln -= cln
copy(ref.b[ptr:], src[:cln])
src = src[cln:]
ptr += cln
if ptr == BlockSize {
{
var ts uint32
var M0, M1, M2, M3, M4, M5, M6, M7 uint32
var a0, a1, a2, a3, a4, a5, a6, a7 uint32
var b0, b1, b2, b3, b4, b5, b6, b7 uint32
M0 = decUInt32be(buf[0:])
M1 = decUInt32be(buf[4:])
M2 = decUInt32be(buf[8:])
M3 = decUInt32be(buf[12:])
M4 = decUInt32be(buf[16:])
M5 = decUInt32be(buf[20:])
M6 = decUInt32be(buf[24:])
M7 = decUInt32be(buf[28:])
a0 = V00 ^ V10
a1 = V01 ^ V11
a2 = V02 ^ V12
a3 = V03 ^ V13
a4 = V04 ^ V14
a5 = V05 ^ V15
a6 = V06 ^ V16
a7 = V07 ^ V17
b0 = V20 ^ V30
b1 = V21 ^ V31
b2 = V22 ^ V32
b3 = V23 ^ V33
b4 = V24 ^ V34
b5 = V25 ^ V35
b6 = V26 ^ V36
b7 = V27 ^ V37
a0 ^= b0
a1 ^= b1
a2 ^= b2
a3 ^= b3
a4 ^= b4
a5 ^= b5
a6 ^= b6
a7 ^= b7
a0 ^= V40
a1 ^= V41
a2 ^= V42
a3 ^= V43
a4 ^= V44
a5 ^= V45
a6 ^= V46
a7 ^= V47
ts = a7
a7 = a6
a6 = a5
a5 = a4
a4 = a3 ^ ts
a3 = a2 ^ ts
a2 = a1
a1 = a0 ^ ts
a0 = ts
V00 ^= a0
V01 ^= a1
V02 ^= a2
V03 ^= a3
V04 ^= a4
V05 ^= a5
V06 ^= a6
V07 ^= a7
V10 ^= a0
V11 ^= a1
V12 ^= a2
V13 ^= a3
V14 ^= a4
V15 ^= a5
V16 ^= a6
V17 ^= a7
V20 ^= a0
V21 ^= a1
V22 ^= a2
V23 ^= a3
V24 ^= a4
V25 ^= a5
V26 ^= a6
V27 ^= a7
V30 ^= a0
V31 ^= a1
V32 ^= a2
V33 ^= a3
V34 ^= a4
V35 ^= a5
V36 ^= a6
V37 ^= a7
V40 ^= a0
V41 ^= a1
V42 ^= a2
V43 ^= a3
V44 ^= a4
V45 ^= a5
V46 ^= a6
V47 ^= a7
ts = V07
b7 = V06
b6 = V05
b5 = V04
b4 = V03 ^ ts
b3 = V02 ^ ts
b2 = V01
b1 = V00 ^ ts
b0 = ts
b0 ^= V10
b1 ^= V11
b2 ^= V12
b3 ^= V13
b4 ^= V14
b5 ^= V15
b6 ^= V16
b7 ^= V17
ts = V17
V17 = V16
V16 = V15
V15 = V14
V14 = V13 ^ ts
V13 = V12 ^ ts
V12 = V11
V11 = V10 ^ ts
V10 = ts
V10 ^= V20
V11 ^= V21
V12 ^= V22
V13 ^= V23
V14 ^= V24
V15 ^= V25
V16 ^= V26
V17 ^= V27
ts = V27
V27 = V26
V26 = V25
V25 = V24
V24 = V23 ^ ts
V23 = V22 ^ ts
V22 = V21
V21 = V20 ^ ts
V20 = ts
V20 ^= V30
V21 ^= V31
V22 ^= V32
V23 ^= V33
V24 ^= V34
V25 ^= V35
V26 ^= V36
V27 ^= V37
ts = V37
V37 = V36
V36 = V35
V35 = V34
V34 = V33 ^ ts
V33 = V32 ^ ts
V32 = V31
V31 = V30 ^ ts
V30 = ts
V30 ^= V40
V31 ^= V41
V32 ^= V42
V33 ^= V43
V34 ^= V44
V35 ^= V45
V36 ^= V46
V37 ^= V47
ts = V47
V47 = V46
V46 = V45
V45 = V44
V44 = V43 ^ ts
V43 = V42 ^ ts
V42 = V41
V41 = V40 ^ ts
V40 = ts
V40 ^= V00
V41 ^= V01
V42 ^= V02
V43 ^= V03
V44 ^= V04
V45 ^= V05
V46 ^= V06
V47 ^= V07
ts = b7
V07 = b6
V06 = b5
V05 = b4
V04 = b3 ^ ts
V03 = b2 ^ ts
V02 = b1
V01 = b0 ^ ts
V00 = ts
V00 ^= V40
V01 ^= V41
V02 ^= V42
V03 ^= V43
V04 ^= V44
V05 ^= V45
V06 ^= V46
V07 ^= V47
ts = V47
V47 = V46
V46 = V45
V45 = V44
V44 = V43 ^ ts
V43 = V42 ^ ts
V42 = V41
V41 = V40 ^ ts
V40 = ts
V40 ^= V30
V41 ^= V31
V42 ^= V32
V43 ^= V33
V44 ^= V34
V45 ^= V35
V46 ^= V36
V47 ^= V37
ts = V37
V37 = V36
V36 = V35
V35 = V34
V34 = V33 ^ ts
V33 = V32 ^ ts
V32 = V31
V31 = V30 ^ ts
V30 = ts
V30 ^= V20
V31 ^= V21
V32 ^= V22
V33 ^= V23
V34 ^= V24
V35 ^= V25
V36 ^= V26
V37 ^= V27
ts = V27
V27 = V26
V26 = V25
V25 = V24
V24 = V23 ^ ts
V23 = V22 ^ ts
V22 = V21
V21 = V20 ^ ts
V20 = ts
V20 ^= V10
V21 ^= V11
V22 ^= V12
V23 ^= V13
V24 ^= V14
V25 ^= V15
V26 ^= V16
V27 ^= V17
ts = V17
V17 = V16
V16 = V15
V15 = V14
V14 = V13 ^ ts
V13 = V12 ^ ts
V12 = V11
V11 = V10 ^ ts
V10 = ts
V10 ^= b0
V11 ^= b1
V12 ^= b2
V13 ^= b3
V14 ^= b4
V15 ^= b5
V16 ^= b6
V17 ^= b7
V00 ^= M0
V01 ^= M1
V02 ^= M2
V03 ^= M3
V04 ^= M4
V05 ^= M5
V06 ^= M6
V07 ^= M7
ts = M7
M7 = M6
M6 = M5
M5 = M4
M4 = M3 ^ ts
M3 = M2 ^ ts
M2 = M1
M1 = M0 ^ ts
M0 = ts
V10 ^= M0
V11 ^= M1
V12 ^= M2
V13 ^= M3
V14 ^= M4
V15 ^= M5
V16 ^= M6
V17 ^= M7
ts = M7
M7 = M6
M6 = M5
M5 = M4
M4 = M3 ^ ts
M3 = M2 ^ ts
M2 = M1
M1 = M0 ^ ts
M0 = ts
V20 ^= M0
V21 ^= M1
V22 ^= M2
V23 ^= M3
V24 ^= M4
V25 ^= M5
V26 ^= M6
V27 ^= M7
ts = M7
M7 = M6
M6 = M5
M5 = M4
M4 = M3 ^ ts
M3 = M2 ^ ts
M2 = M1
M1 = M0 ^ ts
M0 = ts
V30 ^= M0
V31 ^= M1
V32 ^= M2
V33 ^= M3
V34 ^= M4
V35 ^= M5
V36 ^= M6
V37 ^= M7
ts = M7
M7 = M6
M6 = M5
M5 = M4
M4 = M3 ^ ts
M3 = M2 ^ ts
M2 = M1
M1 = M0 ^ ts
M0 = ts
V40 ^= M0
V41 ^= M1
V42 ^= M2
V43 ^= M3
V44 ^= M4
V45 ^= M5
V46 ^= M6
V47 ^= M7
}
{
var ul, uh, vl, vh, tws uint32
var W0, W1, W2, W3, W4, W5, W6, W7, tw uint64
V14 = ((V14 << 1) | (V14 >> (32 - 1)))
V15 = ((V15 << 1) | (V15 >> (32 - 1)))
V16 = ((V16 << 1) | (V16 >> (32 - 1)))
V17 = ((V17 << 1) | (V17 >> (32 - 1)))
V24 = ((V24 << 2) | (V24 >> (32 - 2)))
V25 = ((V25 << 2) | (V25 >> (32 - 2)))
V26 = ((V26 << 2) | (V26 >> (32 - 2)))
V27 = ((V27 << 2) | (V27 >> (32 - 2)))
V34 = ((V34 << 3) | (V34 >> (32 - 3)))
V35 = ((V35 << 3) | (V35 >> (32 - 3)))
V36 = ((V36 << 3) | (V36 >> (32 - 3)))
V37 = ((V37 << 3) | (V37 >> (32 - 3)))
V44 = ((V44 << 4) | (V44 >> (32 - 4)))
V45 = ((V45 << 4) | (V45 >> (32 - 4)))
V46 = ((V46 << 4) | (V46 >> (32 - 4)))
V47 = ((V47 << 4) | (V47 >> (32 - 4)))
W0 = uint64(V00) | (uint64(V10) << 32)
W1 = uint64(V01) | (uint64(V11) << 32)
W2 = uint64(V02) | (uint64(V12) << 32)
W3 = uint64(V03) | (uint64(V13) << 32)
W4 = uint64(V04) | (uint64(V14) << 32)
W5 = uint64(V05) | (uint64(V15) << 32)
W6 = uint64(V06) | (uint64(V16) << 32)
W7 = uint64(V07) | (uint64(V17) << 32)
for r := uintptr(0); r < 8; r++ {
tw = W0
W0 |= W1
W2 ^= W3
W1 = ^W1
W0 ^= W3
W3 &= tw
W1 ^= W3
W3 ^= W2
W2 &= W0
W0 = ^W0
W2 ^= W1
W1 |= W3
tw ^= W1
W3 ^= W2
W2 &= W1
W1 ^= W0
W0 = tw
tw = W5
W5 |= W6
W7 ^= W4
W6 = ^W6
W5 ^= W4
W4 &= tw
W6 ^= W4
W4 ^= W7
W7 &= W5
W5 = ^W5
W7 ^= W6
W6 |= W4
tw ^= W6
W4 ^= W7
W7 &= W6
W6 ^= W5
W5 = tw
W4 ^= W0
ul = uint32(W0)
uh = uint32((W0 >> 32))
vl = uint32(W4)
vh = uint32((W4 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W0 = uint64(ul) | (uint64(uh) << 32)
W4 = uint64(vl) | (uint64(vh) << 32)
W5 ^= W1
ul = uint32(W1)
uh = uint32((W1 >> 32))
vl = uint32(W5)
vh = uint32((W5 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W1 = uint64(ul) | (uint64(uh) << 32)
W5 = uint64(vl) | (uint64(vh) << 32)
W6 ^= W2
ul = uint32(W2)
uh = uint32((W2 >> 32))
vl = uint32(W6)
vh = uint32((W6 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W2 = uint64(ul) | (uint64(uh) << 32)
W6 = uint64(vl) | (uint64(vh) << 32)
W7 ^= W3
ul = uint32(W3)
uh = uint32((W3 >> 32))
vl = uint32(W7)
vh = uint32((W7 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W3 = uint64(ul) | (uint64(uh) << 32)
W7 = uint64(vl) | (uint64(vh) << 32)
W0 ^= kRCW010[r]
W4 ^= kRCW014[r]
}
V00 = uint32(W0)
V10 = uint32((W0 >> 32))
V01 = uint32(W1)
V11 = uint32((W1 >> 32))
V02 = uint32(W2)
V12 = uint32((W2 >> 32))
V03 = uint32(W3)
V13 = uint32((W3 >> 32))
V04 = uint32(W4)
V14 = uint32((W4 >> 32))
V05 = uint32(W5)
V15 = uint32((W5 >> 32))
V06 = uint32(W6)
V16 = uint32((W6 >> 32))
V07 = uint32(W7)
V17 = uint32((W7 >> 32))
W0 = uint64(V20) | (uint64(V30) << 32)
W1 = uint64(V21) | (uint64(V31) << 32)
W2 = uint64(V22) | (uint64(V32) << 32)
W3 = uint64(V23) | (uint64(V33) << 32)
W4 = uint64(V24) | (uint64(V34) << 32)
W5 = uint64(V25) | (uint64(V35) << 32)
W6 = uint64(V26) | (uint64(V36) << 32)
W7 = uint64(V27) | (uint64(V37) << 32)
for r := uintptr(0); r < 8; r++ {
tw = W0
W0 |= W1
W2 ^= W3
W1 = ^W1
W0 ^= W3
W3 &= tw
W1 ^= W3
W3 ^= W2
W2 &= W0
W0 = ^W0
W2 ^= W1
W1 |= W3
tw ^= W1
W3 ^= W2
W2 &= W1
W1 ^= W0
W0 = tw
tw = W5
W5 |= W6
W7 ^= W4
W6 = ^W6
W5 ^= W4
W4 &= tw
W6 ^= W4
W4 ^= W7
W7 &= W5
W5 = ^W5
W7 ^= W6
W6 |= W4
tw ^= W6
W4 ^= W7
W7 &= W6
W6 ^= W5
W5 = tw
W4 ^= W0
ul = uint32(W0)
uh = uint32((W0 >> 32))
vl = uint32(W4)
vh = uint32((W4 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W0 = uint64(ul) | (uint64(uh) << 32)
W4 = uint64(vl) | (uint64(vh) << 32)
W5 ^= W1
ul = uint32(W1)
uh = uint32((W1 >> 32))
vl = uint32(W5)
vh = uint32((W5 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W1 = uint64(ul) | (uint64(uh) << 32)
W5 = uint64(vl) | (uint64(vh) << 32)
W6 ^= W2
ul = uint32(W2)
uh = uint32((W2 >> 32))
vl = uint32(W6)
vh = uint32((W6 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W2 = uint64(ul) | (uint64(uh) << 32)
W6 = uint64(vl) | (uint64(vh) << 32)
W7 ^= W3
ul = uint32(W3)
uh = uint32((W3 >> 32))
vl = uint32(W7)
vh = uint32((W7 >> 32))
ul = ((ul << 2) | (ul >> (32 - 2))) ^ vl
vl = ((vl << 14) | (vl >> (32 - 14))) ^ ul
ul = ((ul << 10) | (ul >> (32 - 10))) ^ vl
vl = ((vl << 1) | (vl >> (32 - 1)))
uh = ((uh << 2) | (uh >> (32 - 2))) ^ vh
vh = ((vh << 14) | (vh >> (32 - 14))) ^ uh
uh = ((uh << 10) | (uh >> (32 - 10))) ^ vh
vh = ((vh << 1) | (vh >> (32 - 1)))
W3 = uint64(ul) | (uint64(uh) << 32)
W7 = uint64(vl) | (uint64(vh) << 32)
W0 ^= kRCW230[r]
W4 ^= kRCW234[r]
}
V20 = uint32(W0)
V30 = uint32((W0 >> 32))
V21 = uint32(W1)
V31 = uint32((W1 >> 32))
V22 = uint32(W2)
V32 = uint32((W2 >> 32))
V23 = uint32(W3)
V33 = uint32((W3 >> 32))
V24 = uint32(W4)
V34 = uint32((W4 >> 32))
V25 = uint32(W5)
V35 = uint32((W5 >> 32))
V26 = uint32(W6)
V36 = uint32((W6 >> 32))
V27 = uint32(W7)
V37 = uint32((W7 >> 32))
for r := uintptr(0); r < 8; r++ {
tws = V40
V40 |= V41
V42 ^= V43
V41 = ^V41
V40 ^= V43
V43 &= tws
V41 ^= V43
V43 ^= V42
V42 &= V40
V40 = ^V40
V42 ^= V41
V41 |= V43
tws ^= V41
V43 ^= V42
V42 &= V41
V41 ^= V40
V40 = tws
tws = V45
V45 |= V46
V47 ^= V44
V46 = ^V46
V45 ^= V44
V44 &= tws
V46 ^= V44
V44 ^= V47
V47 &= V45
V45 = ^V45
V47 ^= V46
V46 |= V44
tws ^= V46
V44 ^= V47
V47 &= V46
V46 ^= V45
V45 = tws
V44 ^= V40
V40 = ((V40 << 2) | (V40 >> (32 - 2))) ^ V44
V44 = ((V44 << 14) | (V44 >> (32 - 14))) ^ V40
V40 = ((V40 << 10) | (V40 >> (32 - 10))) ^ V44
V44 = ((V44 << 1) | (V44 >> (32 - 1)))
V45 ^= V41
V41 = ((V41 << 2) | (V41 >> (32 - 2))) ^ V45
V45 = ((V45 << 14) | (V45 >> (32 - 14))) ^ V41
V41 = ((V41 << 10) | (V41 >> (32 - 10))) ^ V45
V45 = ((V45 << 1) | (V45 >> (32 - 1)))
V46 ^= V42
V42 = ((V42 << 2) | (V42 >> (32 - 2))) ^ V46
V46 = ((V46 << 14) | (V46 >> (32 - 14))) ^ V42
V42 = ((V42 << 10) | (V42 >> (32 - 10))) ^ V46
V46 = ((V46 << 1) | (V46 >> (32 - 1)))
V47 ^= V43
V43 = ((V43 << 2) | (V43 >> (32 - 2))) ^ V47
V47 = ((V47 << 14) | (V47 >> (32 - 14))) ^ V43
V43 = ((V43 << 10) | (V43 >> (32 - 10))) ^ V47
V47 = ((V47 << 1) | (V47 >> (32 - 1)))
V40 ^= kRC40[r]
V44 ^= kRC44[r]
}
}
ptr = 0
}
}
ref.h[0][0] = V00
ref.h[0][1] = V01
ref.h[0][2] = V02
ref.h[0][3] = V03
ref.h[0][4] = V04
ref.h[0][5] = V05
ref.h[0][6] = V06
ref.h[0][7] = V07
ref.h[1][0] = V10
ref.h[1][1] = V11
ref.h[1][2] = V12
ref.h[1][3] = V13
ref.h[1][4] = V14
ref.h[1][5] = V15
ref.h[1][6] = V16
ref.h[1][7] = V17
ref.h[2][0] = V20
ref.h[2][1] = V21
ref.h[2][2] = V22
ref.h[2][3] = V23
ref.h[2][4] = V24
ref.h[2][5] = V25
ref.h[2][6] = V26
ref.h[2][7] = V27
ref.h[3][0] = V30
ref.h[3][1] = V31
ref.h[3][2] = V32
ref.h[3][3] = V33
ref.h[3][4] = V34
ref.h[3][5] = V35
ref.h[3][6] = V36
ref.h[3][7] = V37
ref.h[4][0] = V40
ref.h[4][1] = V41
ref.h[4][2] = V42
ref.h[4][3] = V43
ref.h[4][4] = V44
ref.h[4][5] = V45
ref.h[4][6] = V46
ref.h[4][7] = V47
ref.ptr = ptr
return fln, nil
}
// Close the digest by writing the last bits and storing the hash
// in dst. This prepares the digest for reuse by calling reset. A call
// to Close with a dst that is smaller then HashSize will return an error.
func (ref *digest) Close(dst []byte, bits uint8, bcnt uint8) error {
if ln := len(dst); HashSize > ln {
return fmt.Errorf("Luffa Close: dst min length: %d, got %d", HashSize, ln)
}
buf := ref.b[:]
ptr := ref.ptr + 1
{
off := uint8(0x80) >> bcnt
buf[ref.ptr] = uint8((bits & -off) | off)
}
memset(buf[ptr:], 0)
var V00, V01, V02, V03, V04, V05, V06, V07 uint32
var V10, V11, V12, V13, V14, V15, V16, V17 uint32
var V20, V21, V22, V23, V24, V25, V26, V27 uint32
var V30, V31, V32, V33, V34, V35, V36, V37 uint32
var V40, V41, V42, V43, V44, V45, V46, V47 uint32
V00 = ref.h[0][0]
V01 = ref.h[0][1]
V02 = ref.h[0][2]
V03 = ref.h[0][3]
V04 = ref.h[0][4]
V05 = ref.h[0][5]
V06 = ref.h[0][6]
V07 = ref.h[0][7]
V10 = ref.h[1][0]
V11 = ref.h[1][1]
V12 = ref.h[1][2]
V13 = ref.h[1][3]
V14 = ref.h[1][4]
V15 = ref.h[1][5]
V16 = ref.h[1][6]
V17 = ref.h[1][7]
V20 = ref.h[2][0]
V21 = ref.h[2][1]
V22 = ref.h[2][2]
V23 = ref.h[2][3]
V24 = ref.h[2][4]
V25 = ref.h[2][5]
V26 = ref.h[2][6]
V27 = ref.h[2][7]
V30 = ref.h[3][0]
V31 = ref.h[3][1]
V32 = ref.h[3][2]
V33 = ref.h[3][3]
V34 = ref.h[3][4]
V35 = ref.h[3][5]
V36 = ref.h[3][6]
V37 = ref.h[3][7]
V40 = ref.h[4][0]
V41 = ref.h[4][1]
V42 = ref.h[4][2]
V43 = ref.h[4][3]
V44 = ref.h[4][4]
V45 = ref.h[4][5]
V46 = ref.h[4][6]
V47 = ref.h[4][7]
for i := uintptr(0); i < 3; i++ {
{
var ts uint32
var M0, M1, M2, M3, M4, M5, M6, M7 uint32
var a0, a1, a2, a3, a4, a5, a6, a7 uint32
var b0, b1, b2, b3, b4, b5, b6, b7 uint32
M0 = decUInt32be(buf[0:])
M1 = decUInt32be(buf[4:])
M2 = decUInt32be(buf[8:])
M3 = decUInt32be(buf[12:])
M4 = decUInt32be(buf[16:])
M5 = decUInt32be(buf[20:])
M6 = decUInt32be(buf[24:])
M7 = decUInt32be(buf[28:])
a0 = V00 ^ V10
a1 = V01 ^ V11
a2 = V02 ^ V12
a3 = V03 ^ V13
a4 = V04 ^ V14
a5 = V05 ^ V15
a6 = V06 ^ V16
a7 = V07 ^ V17
b0 = V20 ^ V30
b1 = V21 ^ V31