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Update Poseidon to new circomlib version & https://extgit.iaik.tugraz.at/krypto/hadeshash

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arnaucube
2020-08-18 18:25:00 +02:00
parent 70841d78e7
commit e04ca5764a
5 changed files with 3587 additions and 214 deletions
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4
babyjub/eddsa.go
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@@ -253,7 +253,7 @@ func (k *PrivateKey) SignPoseidon(msg *big.Int) *Signature {
R8 := NewPoint().Mul(r, B8) // R8 = r * 8 * B
A := k.Public().Point()
hmInput := [poseidon.T]*big.Int{R8.X, R8.Y, A.X, A.Y, msg, big.NewInt(int64(0))}
hmInput := []*big.Int{R8.X, R8.Y, A.X, A.Y, msg, big.NewInt(int64(0))}
hm, err := poseidon.Hash(hmInput) // hm = H1(8*R.x, 8*R.y, A.x, A.y, msg)
if err != nil {
panic(err)
@@ -270,7 +270,7 @@ func (k *PrivateKey) SignPoseidon(msg *big.Int) *Signature {
// VerifyPoseidon verifies the signature of a message encoded as a big.Int in Zq
// using blake-512 hash for buffer hashing and Poseidon for big.Int hashing.
func (p *PublicKey) VerifyPoseidon(msg *big.Int, sig *Signature) bool {
hmInput := [poseidon.T]*big.Int{sig.R8.X, sig.R8.Y, p.X, p.Y, msg, big.NewInt(int64(0))}
hmInput := []*big.Int{sig.R8.X, sig.R8.Y, p.X, p.Y, msg, big.NewInt(int64(0))}
hm, err := poseidon.Hash(hmInput) // hm = H1(8*R.x, 8*R.y, A.x, A.y, msg)
if err != nil {
panic(err)

4
babyjub/eddsa_test.go
View File

@@ -96,7 +96,7 @@ func TestSignVerifyPoseidon(t *testing.T) {
"15383486972088797283337779941324724402501462225528836549661220478783371668959",
sig.R8.Y.String())
assert.Equal(t,
"248298168863866362217836334079793350221620631973732197668910946177382043688",
"1662463587877312619203503803508234533733252768380479199263194005796068211378",
sig.S.String())
ok := pk.VerifyPoseidon(msg, sig)
@@ -108,7 +108,7 @@ func TestSignVerifyPoseidon(t *testing.T) {
assert.Equal(t, ""+
"dfedb4315d3f2eb4de2d3c510d7a987dcab67089c8ace06308827bf5bcbe02a2"+
"28506bce274aa1b3f7e7c2fd7e4fe09bff8f9aa37a42def7994e98f322888c00",
"b23a1f04909fc088dec7e4835d85a326f7c0d0b2a3d0232d84448ca7c9ebac03",
hex.EncodeToString(sigBuf[:]))
ok = pk.VerifyPoseidon(msg, sig2)