forks/go-ethereum
1
0
Fork 1
mirror of https://github.com/ethereum/go-ethereum.git synced 2026-07-21 20:26:41 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

core/types: reduce allocations in transaction signing

Browse source
This commit is contained in:
MariusVanDerWijden 2025-12-01 20:15:09 +01:00
parent 9baab1311a
commit 95b0563898
1 changed files with 6 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
core/types/transaction_signing.go
View file

@ -327,7 +327,7 @@ func NewEIP2930Signer(chainId *big.Int) Signer {
// are replay-protected as well as unprotected homestead transactions. // are replay-protected as well as unprotected homestead transactions.
// Deprecated: always use the Signer interface type // Deprecated: always use the Signer interface type
type EIP155Signer struct { type EIP155Signer struct {
chainId, chainIdMul *big.Int chainId *big.Int
} }
func NewEIP155Signer(chainId *big.Int) EIP155Signer { func NewEIP155Signer(chainId *big.Int) EIP155Signer {
@ -335,8 +335,7 @@ func NewEIP155Signer(chainId *big.Int) EIP155Signer {
chainId = new(big.Int) chainId = new(big.Int)
} }
return EIP155Signer{ return EIP155Signer{
chainId: chainId, chainId: chainId,
chainIdMul: new(big.Int).Mul(chainId, big.NewInt(2)),
} }
} }
@ -362,7 +361,8 @@ func (s EIP155Signer) Sender(tx *Transaction) (common.Address, error) {
return common.Address{}, fmt.Errorf("%w: have %d want %d", ErrInvalidChainId, tx.ChainId(), s.chainId) return common.Address{}, fmt.Errorf("%w: have %d want %d", ErrInvalidChainId, tx.ChainId(), s.chainId)
} }
V, R, S := tx.RawSignatureValues() V, R, S := tx.RawSignatureValues()
V = new(big.Int).Sub(V, s.chainIdMul) V = new(big.Int).Sub(V, s.chainId)
V = new(big.Int).Sub(V, s.chainId)
V.Sub(V, big8) V.Sub(V, big8)
return recoverPlain(s.Hash(tx), R, S, V, true) return recoverPlain(s.Hash(tx), R, S, V, true)
} }
@ -376,7 +376,8 @@ func (s EIP155Signer) SignatureValues(tx *Transaction, sig []byte) (R, S, V *big
R, S, V = decodeSignature(sig) R, S, V = decodeSignature(sig)
if s.chainId.Sign() != 0 { if s.chainId.Sign() != 0 {
V = big.NewInt(int64(sig[64] + 35)) V = big.NewInt(int64(sig[64] + 35))
V.Add(V, s.chainIdMul) V.Add(V, s.chainId)
V.Add(V, s.chainId)
} }
return R, S, V, nil return R, S, V, nil
} }