diff --git a/core/types/transaction_signing.go b/core/types/transaction_signing.go index 339fee6f9737..dd25f081f79a 100644 --- a/core/types/transaction_signing.go +++ b/core/types/transaction_signing.go @@ -572,6 +572,6 @@ func deriveChainId(v *big.Int) *big.Int { } return new(big.Int).SetUint64((v - 35) / 2) } - v.Sub(v, big.NewInt(35)) - return v.Rsh(v, 1) + vCopy := new(big.Int).Sub(v, big.NewInt(35)) + return vCopy.Rsh(vCopy, 1) } diff --git a/core/types/transaction_test.go b/core/types/transaction_test.go index 5dbf367073b5..eed13ee205bf 100644 --- a/core/types/transaction_test.go +++ b/core/types/transaction_test.go @@ -345,6 +345,41 @@ func TestTransactionCoding(t *testing.T) { } } +func TestLegacyTransaction_ConsistentV_LargeChainIds(t *testing.T) { + chainId := new(big.Int).SetUint64(13317435930671861669) + + txdata := &LegacyTx{ + Nonce: 1, + Gas: 1, + GasPrice: big.NewInt(2), + Data: []byte("abcdef"), + } + + key, err := crypto.GenerateKey() + if err != nil { + t.Fatalf("could not generate key: %v", err) + } + + tx, err := SignNewTx(key, NewEIP2930Signer(chainId), txdata) + if err != nil { + t.Fatalf("could not sign transaction: %v", err) + } + + // Make a copy of the initial V value + preV, _, _ := tx.RawSignatureValues() + preV = new(big.Int).Set(preV) + + if tx.ChainId().Cmp(chainId) != 0 { + t.Fatalf("wrong chain id: %v", tx.ChainId()) + } + + v, _, _ := tx.RawSignatureValues() + + if v.Cmp(preV) != 0 { + t.Fatalf("wrong v value: %v", v) + } +} + func encodeDecodeJSON(tx *Transaction) (*Transaction, error) { data, err := json.Marshal(tx) if err != nil {