arnaucube/go-iden3-crypto
1
0
Fork 0
mirror of https://github.com/arnaucube/go-iden3-crypto.git synced 2026-02-08 03:56:42 +01:00
Code Issues Packages Projects Releases Wiki Activity

Better keccac256 (#41)

Browse Source 
* Switch to keccac256 implementation from golang.org/x/crypto instead of go-ethereum
This commit is contained in:
Oleksandr Brezhniev
2021-11-19 17:00:10 +02:00
committed by GitHub
parent 9c2ca9ca7c
commit 64e757cc4a
5 changed files with 31 additions and 558 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
mimc7/mimc7.go
View File

@@ -4,9 +4,9 @@ import (
"errors"
"math/big"
"github.com/ethereum/go-ethereum/crypto"
_constants "github.com/iden3/go-iden3-crypto/constants"
"github.com/iden3/go-iden3-crypto/ff"
"github.com/iden3/go-iden3-crypto/keccak256"
"github.com/iden3/go-iden3-crypto/utils"
)
@@ -25,8 +25,8 @@ type constantsData struct {
func generateConstantsData() constantsData {
var constants constantsData
constants.seedHash = new(big.Int).SetBytes(crypto.Keccak256([]byte(SEED)))
c := new(big.Int).SetBytes(crypto.Keccak256([]byte(SEED + "_iv")))
constants.seedHash = new(big.Int).SetBytes(keccak256.Hash([]byte(SEED)))
c := new(big.Int).SetBytes(keccak256.Hash([]byte(SEED + "_iv")))
constants.iv = new(big.Int).Mod(c, _constants.Q)
constants.nRounds = 91
@@ -38,9 +38,9 @@ func generateConstantsData() constantsData {
func getConstants(seed string, nRounds int) []*ff.Element {
cts := make([]*ff.Element, nRounds)
cts[0] = ff.NewElement()
c := new(big.Int).SetBytes(crypto.Keccak256([]byte(SEED)))
c := new(big.Int).SetBytes(keccak256.Hash([]byte(SEED)))
for i := 1; i < nRounds; i++ {
c = new(big.Int).SetBytes(crypto.Keccak256(c.Bytes()))
c = new(big.Int).SetBytes(keccak256.Hash(c.Bytes()))
n := new(big.Int).Mod(c, _constants.Q)
cts[i] = ff.NewElement().SetBigInt(n)

6
mimc7/mimc7_test.go
View File

@@ -5,16 +5,16 @@ import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/crypto"
"github.com/iden3/go-iden3-crypto/keccak256"
"github.com/stretchr/testify/assert"
)
func TestKeccak256(t *testing.T) {
res := crypto.Keccak256([]byte(SEED))
res := keccak256.Hash([]byte(SEED))
assert.Equal(t,
"b6e489e6b37224a50bebfddbe7d89fa8fdcaa84304a70bd13f79b5d9f7951e9e",
hex.EncodeToString(res))
c := new(big.Int).SetBytes(crypto.Keccak256([]byte(SEED)))
c := new(big.Int).SetBytes(keccak256.Hash([]byte(SEED)))
assert.Equal(t,
"82724731331859054037315113496710413141112897654334566532528783843265082629790",
c.String())