private string GetTransactionHash(
string from,
string to,
string data,
BigInteger txFee,
BigInteger gasPrice,
BigInteger gasLimit,
BigInteger nonce,
string relayHubAddress,
string relayAddress)
{
var keccack256 = new Sha3Keccack();
var encoder = new IntTypeEncoder();
return(keccack256.CalculateHashFromHex(
RelayPrefix.ToHexUTF8(),
from,
to,
data,
encoder.EncodeInt(txFee).ToHex(),
encoder.EncodeInt(gasPrice).ToHex(),
encoder.EncodeInt(gasLimit).ToHex(),
encoder.EncodeInt(nonce).ToHex(),
relayHubAddress,
relayAddress));
}
public void ShouldCalculateHashFromHexForMultipleStrings()
{
var keccak = new Sha3Keccack();
var result = keccak.CalculateHashFromHex("0x93cdeb708b7545dc668eb9280176169d1c33cfd8ed6f04690a0bcc88a93fc4ae",
"0x0d57c7d8b54ebf963f94cded8a57a1b109ac7465ada218575473648bf373b90d");
Assert.Equal("13265b3c8b785f6715b215cb1e6869312588a03afe0076beda8042c2ceb5603b", result);
}
public static string GetChannelAddress(string aliceAddress, string bobAddress)
{
var sha3 = new Sha3Keccack();
var output = sha3.CalculateHashFromHex(aliceAddress, bobAddress);
var resultHash = "0x" + output;
return(resultHash);
}
//extracted from latest Nethereum Util
public static string CalculateCreate2Address(string address, string saltHex, string byteCodeHex)
{
if (string.IsNullOrEmpty(address))
{
throw new System.ArgumentException($"'{nameof(address)}' cannot be null or empty.", nameof(address));
}
if (string.IsNullOrEmpty(saltHex))
{
throw new System.ArgumentException($"'{nameof(saltHex)}' cannot be null or empty.", nameof(saltHex));
}
if (saltHex.EnsureHexPrefix().Length != 66)
{
throw new System.ArgumentException($"'{nameof(saltHex)}' needs to be 32 bytes", nameof(saltHex));
}
var sha3 = new Sha3Keccack();
return(sha3.CalculateHashFromHex("0xff", address, saltHex, sha3.CalculateHashFromHex(byteCodeHex)).Substring(24).ConvertToEthereumChecksumAddress());
}
public static string Sha3ForCooperative(CooperativeSignDto cooperativeDto)
{
var sha3 = new Sha3Keccack();
var bob =
new IntTypeEncoder()
.Encode(StringToBigInteger(cooperativeDto.BobAmountWei));
var alice =
new IntTypeEncoder()
.Encode(StringToBigInteger(cooperativeDto.AliceAmountWei));
var output = sha3.CalculateHashFromHex(bob.ToHex(), alice.ToHex(), cooperativeDto.ChannelId);
var resultHash = "0x" + output;
return(resultHash);
}
public static string Sha3ForReceipts(ReceiptDto receiptDto)
{
var sha3 = new Sha3Keccack();
var rec =
new IntTypeEncoder()
.Encode(receiptDto.ReceiptId);
var epo =
new IntTypeEncoder()
.Encode(receiptDto.EpochId);
var amo =
new IntTypeEncoder()
.Encode(StringToBigInteger(receiptDto.AmountWei));
var output = sha3.CalculateHashFromHex(rec.ToHex(), epo.ToHex(), amo.ToHex(), receiptDto.Address);
var resultHash = "0x" + output;
return(resultHash);
}
public static string Sha3ForAudit(AuditSignDto auditDto)
{
var sha3 = new Sha3Keccack();
var bob =
new IntTypeEncoder()
.Encode(StringToBigInteger(auditDto.BobAmountWei));
var alice =
new IntTypeEncoder()
.Encode(StringToBigInteger(auditDto.AliceAmountWei));
var epoch =
new IntTypeEncoder()
.Encode(auditDto.EpochId);
var output = sha3.CalculateHashFromHex(bob.ToHex(), alice.ToHex(), auditDto.ChannelId, epoch.ToHex());
var resultHash = "0x" + output;
return(resultHash);
}
public void ShouldSignHash()
{
var address1 = "0x6A849e2036A36EB4Cd37b9aFA3c770064899f1A2";
var address2 = "0x12890D2cce102216644c59daE5baed380d84830c";
var numberBytes =
new IntTypeEncoder()
.Encode(1); //Number is a big integer so we need 32 bytes if it was int32 it will be 4 bytes. Using the abi encoder it takes care of padding
var sha3 = new Sha3Keccack();
var output = sha3.CalculateHashFromHex(address1, address2, numberBytes.ToHex());
Assert.Equal("0xc11d3d2b8e0c5b8b645b9e7502751352ecaf8c3fdf3a0124dae9c1556fb2ce37",
output.EnsureHexPrefix());
var signer = new MessageSigner();
var signature = signer.Sign(output.HexToByteArray(),
"0xb5b1870957d373ef0eeffecc6e4812c0fd08f554b37b233526acc331bf1544f7");
var ethEcdsa = MessageSigner.ExtractEcdsaSignature(signature);
var address = signer.EcRecover(output.HexToByteArray(), signature);
Assert.Equal(address,
new EthECKey("0xb5b1870957d373ef0eeffecc6e4812c0fd08f554b37b233526acc331bf1544f7".HexToByteArray(),
true).GetPublicAddress());
}
public static string CalculateTransactionHash(string rawSignedTransaction)
{
var sha3 = new Sha3Keccack();
return(sha3.CalculateHashFromHex(rawSignedTransaction));
}
