public void Test_External_Signature()
{
// using old chain id
/*
* message is raw hash of eth transaction with following parameters
* const txParams = {
* nonce: '0x00',
* gasPrice: '0x09184e72a000',
* gasLimit: '0x27100000',
* value: '0x00',
* data: '0x7f7465737432000000000000000000000000000000000000000000000000000000600057',
* };
* EIP-155 encoding used, with chain id = 25
* Signature created from private key: 0xd95d6db65f3e2223703c5d8e205d98e3e6b470f067b0f94f6c6bf73d4301ce48
* Address: 0x6Bc32575ACb8754886dC283c2c8ac54B1Bd93195
* RLP: 0xf7808609184e72a00084271000008080a47f7465737432000000000000000000000000000000000000000000000000000000600057198080
* Check here: https://toolkit.abdk.consulting/ethereum#transaction
*/
var rlp =
"0xf7808609184e72a00084271000008080a47f7465737432000000000000000000000000000000000000000000000000000000600057198080"
.HexToBytes();
var message = rlp.Keccak().ToBytes();
// check the signature with python script
var signature =
"0xCC3D45ADFC4570ABA45FE873D17741434310F178B7AB406C11A2CD4E6AF8DCB727A3F460B3B7601425CFAEB7B89E734F637509F4691A5553547F638DBEB17BBB56"
.HexToBytes();
var pubKey = Crypto.RecoverSignatureHashed(message, signature, false);
Assert.AreEqual(
"0x6Bc32575ACb8754886dC283c2c8ac54B1Bd93195".ToLower(),
Crypto.ComputeAddress(pubKey).ToHex().ToLower()
);
// using new chain id
/*
* message is raw hash of eth transaction with following parameters
* const txParams = {
* nonce: '0x00',
* gasPrice: '0x09184e72a000',
* gasLimit: '0x27100000',
* value: '0x00',
* data: '0x7f7465737432000000000000000000000000000000000000000000000000000000600057',
* };
* EIP-155 encoding used, with chain id = 225
* Signature created from private key: 0xd95d6db65f3e2223703c5d8e205d98e3e6b470f067b0f94f6c6bf73d4301ce48
* Address: 0x6Bc32575ACb8754886dC283c2c8ac54B1Bd93195
* RLP: 0xf838808609184e72a00084271000008080a47f746573743200000000000000000000000000000000000000000000000000000060005781e18080
* Check here: https://toolkit.abdk.consulting/ethereum#transaction
*/
rlp =
"0xf838808609184e72a00084271000008080a47f746573743200000000000000000000000000000000000000000000000000000060005781e18080"
.HexToBytes();
message = rlp.Keccak().ToBytes();
// check the signature with python script
signature =
"0x3BBFC886AD74E518C99D59966B5B4B656D3ED03B71FACD9384A82D08C8ED825B170B6E685A3E15FA9969D729B6C036ED3E5C3926B6FC424708F8F7DE0728003401E6"
.HexToBytes();
pubKey = Crypto.RecoverSignatureHashed(message, signature, true);
Assert.AreEqual(
"0x6Bc32575ACb8754886dC283c2c8ac54B1Bd93195".ToLower(),
Crypto.ComputeAddress(pubKey).ToHex().ToLower()
);
}
public static ECDSAPublicKey RecoverPublicKey(this TransactionReceipt receipt, bool useNewChainId)
{
return(Crypto
.RecoverSignatureHashed(receipt.Transaction.RawHash(useNewChainId).ToBytes(), receipt.Signature.Encode(), useNewChainId)
.ToPublicKey());
}