public void Test_External_Signature2()
{
var crypto = CryptoProvider.GetCrypto();
var rawTx =
"0xf86d808504a817c800832dc6c0948e7b7262e0fa4616566591d51f998f16a79fb547880de0b6b3a76400008025a0115105d96a43f41a5ea562bb3e591cbfa431a8cdae9c3030457adca2cb854f78a012fb41922c53c73473563003667ed8e783359c91d95b42301e1955d530b1ca33";
var ethTx = new TransactionChainId(rawTx.HexToBytes());
Console.WriteLine("ETH RLP: " + ethTx.GetRLPEncodedRaw().ToHex());
var nonce = ethTx.Nonce.ToHex();
Console.WriteLine("Nonce " + nonce);
Console.WriteLine("ChainId " + Convert.ToUInt64(ethTx.ChainId.ToHex(), 16));
var tx = new Transaction
{
To = ethTx.ReceiveAddress.ToUInt160(),
Value = ethTx.Value.ToUInt256(true),
Nonce = Convert.ToUInt64(ethTx.Nonce.ToHex(), 16),
GasPrice = Convert.ToUInt64(ethTx.GasPrice.ToHex(), 16),
GasLimit = Convert.ToUInt64(ethTx.GasLimit.ToHex(), 16)
};
Console.WriteLine("RLP: " + tx.Rlp(true).ToHex());
var address = ethTx.Key.GetPublicAddress().HexToBytes();
var from = ethTx.Key.GetPublicAddress().HexToBytes().ToUInt160();
Console.WriteLine(address.ToHex());
var r = "0x115105d96a43f41a5ea562bb3e591cbfa431a8cdae9c3030457adca2cb854f78".HexToBytes();
var s = "0x12fb41922c53c73473563003667ed8e783359c91d95b42301e1955d530b1ca33".HexToBytes();
var v = "0x25".HexToBytes();
var signature = r.Concat(s).Concat(v).ToArray();
Console.WriteLine(signature.ToHex());
var message =
"0xed808504a817c800832dc6c0948e7b7262e0fa4616566591d51f998f16a79fb547880de0b6b3a764000080018080"
.HexToBytes().KeccakBytes();
var recoveredPubkey = crypto.RecoverSignatureHashed(message, signature, false);
Console.WriteLine(recoveredPubkey.ToHex());
var addr = crypto.ComputeAddress(recoveredPubkey);
var same = addr.SequenceEqual(from.ToBytes());
Console.WriteLine(addr.ToHex());
Console.WriteLine(same);
}
// ported from the main example in the spec:
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-155.md
// Modified from the original pull request of Andres Aragoneses @Knocte
public void BasicSigning()
{
var nonce = 9.ToBytesForRLPEncoding();
var gasPrice = BigInteger.Parse("20" + "000" + "000" + "000").ToBytesForRLPEncoding();
var gasLimit = 21000.ToBytesForRLPEncoding();
var to = "0x3535353535353535353535353535353535353535".HexToByteArray();
var amount = BigInteger.Parse("1" + "000" + "000" + "000" +
"000" + "000" + "000").ToBytesForRLPEncoding();
var data = "".HexToByteArray();
byte[] ZERO_BYTE_ARRAY = 0.ToBytesForRLPEncoding();
var chain = 1;
var chainId = ((int)chain).ToBytesForRLPEncoding();
//Create a transaction from scratch
var tx = new TransactionChainId(nonce, gasPrice, gasLimit, to, amount, data, chainId);
Assert.Equal(chainId, tx.ChainId);
Assert.Equal(ZERO_BYTE_ARRAY, tx.RHash);
Assert.Equal(ZERO_BYTE_ARRAY, tx.SHash);
var expectedSigningData =
"ec098504a817c800825208943535353535353535353535353535353535353535880de0b6b3a764000080018080";
Assert.Equal(expectedSigningData, tx.GetRLPEncodedRaw().ToHex());
var expectedSigningHash = "daf5a779ae972f972197303d7b574746c7ef83eadac0f2791ad23db92e4c8e53";
Assert.Equal(expectedSigningHash, tx.RawHash.ToHex());
var privateKey = "4646464646464646464646464646464646464646464646464646464646464646";
var key = new EthECKey(privateKey);
tx.Sign(key);
var rFromSignature = tx.Signature.R.ToBigIntegerFromRLPDecoded();
var expectedRFromSignature = "18515461264373351373200002665853028612451056578545711640558177340181847433846";
Assert.Equal(expectedRFromSignature, rFromSignature.ToString());
var sFromSignature = tx.Signature.S.ToBigIntegerFromRLPDecoded();
var expectedSFromSignature = "46948507304638947509940763649030358759909902576025900602547168820602576006531";
Assert.Equal(expectedSFromSignature, sFromSignature.ToString());
byte[] vFromSignature = tx.Signature.V;
Assert.Equal(37, vFromSignature.ToIntFromRLPDecoded());
var expectedSignedTx = "f86c098504a817c800825208943535353535353535353535353535353535353535880de0b6b3a76400008025a028ef61340bd939bc2195fe537567866003e1a15d3c71ff63e1590620aa636276a067cbe9d8997f761aecb703304b3800ccf555c9f3dc64214b297fb1966a3b6d83";
Assert.Equal(expectedSignedTx.Length, tx.GetRLPEncoded().ToHex().Length);
Assert.Equal(expectedSignedTx, tx.GetRLPEncoded().ToHex());
var recoveryTransaction = new TransactionChainId(tx.GetRLPEncoded(), 1);
Assert.True(recoveryTransaction.Key.VerifyAllowingOnlyLowS(recoveryTransaction.RawHash, recoveryTransaction.Signature));
Assert.Equal(key.GetPublicAddress(), recoveryTransaction.Key.GetPublicAddress());
}
