Merge pull request Consensys#37 from bnb-chain/zkbnb-develop-v0.8.0-c…

…ontract-solving-update zkbnb-develop-v0.8.0-contract-solving-update
qct · Apr 12, 2023 · bc73461 · bc73461
2 parents ec65ca1 + dc7bbb6
commit bc73461
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Showing 8 changed files with 32 additions and 16 deletions.
diff --git a/internal/backend/bls12-377/groth16/commitment.go b/internal/backend/bls12-377/groth16/commitment.go
diff --git a/internal/backend/bls12-381/groth16/commitment.go b/internal/backend/bls12-381/groth16/commitment.go
diff --git a/internal/backend/bls24-315/groth16/commitment.go b/internal/backend/bls24-315/groth16/commitment.go
diff --git a/internal/backend/bls24-317/groth16/commitment.go b/internal/backend/bls24-317/groth16/commitment.go
diff --git a/internal/backend/bn254/groth16/commitment.go b/internal/backend/bn254/groth16/commitment.go
diff --git a/internal/backend/bw6-633/groth16/commitment.go b/internal/backend/bw6-633/groth16/commitment.go
diff --git a/internal/backend/bw6-761/groth16/commitment.go b/internal/backend/bw6-761/groth16/commitment.go
diff --git a/internal/generator/backend/template/zkpschemes/groth16/groth16.commitment.go.tmpl b/internal/generator/backend/template/zkpschemes/groth16/groth16.commitment.go.tmpl
@@ -1,11 +1,13 @@
 import (
+	"crypto/sha256"
     {{- template "import_fr" . }}
     {{- template "import_curve" . }}
     "github.com/consensys/gnark/constraint"
     "math/big"
 )
 
 func solveCommitmentWire(commitmentInfo *constraint.Commitment, commitment *curve.G1Affine, publicCommitted []*big.Int) (fr.Element, error) {
-    res, err := fr.Hash(commitmentInfo.SerializeCommitment(commitment.Marshal(), publicCommitted, (fr.Bits-1)/8+1), []byte(constraint.CommitmentDst), 1)
-    return res[0], err
+	bytes := sha256.Sum256(commitmentInfo.SerializeCommitment(commitment.Marshal(), publicCommitted, (fr.Bits-1)/8+1))
+	bi := new(big.Int).SetBytes(bytes[:])
+	return *new(fr.Element).SetBigInt(bi), nil
 }