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use go-bigmodexpfix for modexp #2497

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Merged
merged 1 commit into from
Sep 22, 2025
Merged

use go-bigmodexpfix for modexp #2497

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7 changes: 4 additions & 3 deletions core/vm/contracts.go
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@ import (
bls12381 "github.com/consensys/gnark-crypto/ecc/bls12-381"
"github.com/consensys/gnark-crypto/ecc/bls12-381/fp"
"github.com/consensys/gnark-crypto/ecc/bls12-381/fr"
patched_big "github.com/ethereum/go-bigmodexpfix/src/math/big"
"golang.org/x/crypto/ripemd160"

"github.com/CortexFoundation/CortexTheseus/common"
Expand Down Expand Up @@ -499,9 +500,9 @@ func (c *bigModExp) Run(input []byte) ([]byte, error) {
}
// Retrieve the operands and execute the exponentiation
var (
base = new(big.Int).SetBytes(getData(input, 0, baseLen))
exp = new(big.Int).SetBytes(getData(input, baseLen, expLen))
mod = new(big.Int).SetBytes(getData(input, baseLen+expLen, modLen))
base = new(patched_big.Int).SetBytes(getData(input, 0, baseLen))
exp = new(patched_big.Int).SetBytes(getData(input, baseLen, expLen))
mod = new(patched_big.Int).SetBytes(getData(input, baseLen+expLen, modLen))
v []byte
)
switch {
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1 change: 1 addition & 0 deletions go.mod
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Expand Up @@ -26,6 +26,7 @@ require (
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0
github.com/dop251/goja v0.0.0-20250630131328-58d95d85e994
github.com/ethereum/c-kzg-4844 v1.0.3
github.com/ethereum/go-bigmodexpfix v0.0.0-20250911101455-f9e208c548ab
github.com/ethereum/go-verkle v0.2.2
github.com/ferranbt/fastssz v1.0.0
github.com/fjl/gencodec v0.1.0
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2 changes: 2 additions & 0 deletions go.sum
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Expand Up @@ -462,6 +462,8 @@ github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97
github.com/etcd-io/bbolt v1.3.3/go.mod h1:ZF2nL25h33cCyBtcyWeZ2/I3HQOfTP+0PIEvHjkjCrw=
github.com/ethereum/c-kzg-4844 v1.0.3 h1:IEnbOHwjixW2cTvKRUlAAUOeleV7nNM/umJR+qy4WDs=
github.com/ethereum/c-kzg-4844 v1.0.3/go.mod h1:VewdlzQmpT5QSrVhbBuGoCdFJkpaJlO1aQputP83wc0=
github.com/ethereum/go-bigmodexpfix v0.0.0-20250911101455-f9e208c548ab h1:rvv6MJhy07IMfEKuARQ9TKojGqLVNxQajaXEp/BoqSk=
github.com/ethereum/go-bigmodexpfix v0.0.0-20250911101455-f9e208c548ab/go.mod h1:IuLm4IsPipXKF7CW5Lzf68PIbZ5yl7FFd74l/E0o9A8=
github.com/ethereum/go-verkle v0.2.2 h1:I2W0WjnrFUIzzVPwm8ykY+7pL2d4VhlsePn4j7cnFk8=
github.com/ethereum/go-verkle v0.2.2/go.mod h1:M3b90YRnzqKyyzBEWJGqj8Qff4IDeXnzFw0P9bFw3uk=
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
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27 changes: 27 additions & 0 deletions vendor/github.com/ethereum/go-bigmodexpfix/LICENSE
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149 changes: 149 additions & 0 deletions vendor/github.com/ethereum/go-bigmodexpfix/src/internal/byteorder/byteorder.go
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26 changes: 26 additions & 0 deletions vendor/github.com/ethereum/go-bigmodexpfix/src/math/big/accuracy_string.go
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