public override async Task SignAsync(CeloTransactionChainId transaction)
{
var txMessage = new EthereumSignTx
{
Nonce = transaction.Nonce,
GasPrice = transaction.GasPrice,
GasLimit = transaction.GasLimit,
To = transaction.ReceiveAddress,
Value = transaction.Value,
AddressNs = GetPath(),
ChainId = (uint)new BigInteger(transaction.ChainId)
};
if (transaction.Data.Length > 0)
{
txMessage.DataInitialChunk = transaction.Data;
txMessage.DataLength = (uint)transaction.Data.Length;
}
var signature = await TrezorManager.SendMessageAsync <EthereumTxRequest, EthereumSignTx>(txMessage);
if (signature.SignatureS == null || signature.SignatureR == null)
{
throw new Exception("Signing failure or not accepted");
}
transaction.SetSignature(EthECDSASignatureFactory.FromComponents(signature.SignatureR, signature.SignatureS, (byte)signature.SignatureV));
}
public EthECDSASignature GetSignature()
{
if (!IsSigned())
{
return(null);
}
return(EthECDSASignatureFactory.FromComponents(R, S, V));
}
public static bool verify(string dataStr, string signStr)
{
try
{
var sign = EthECDSASignatureFactory.ExtractECDSASignature(signStr);
var dataHash = new Sha3Keccack().CalculateHash(Encoding.UTF8.GetBytes(dataStr));
var pubKey = EthECKey.RecoverFromSignature(sign, dataHash);
return(pubKey.Verify(dataHash, sign));
}catch
{
return(false);
}
}
/// <summary>
/// Returns HoardID that signed this transaction
/// </summary>
/// <param name="signatureStr"></param>
/// <param name="rlpEncodedTransaction"></param>
/// <returns>Signer of this transaction</returns>
public static HoardID RecoverHoardIdFromTransaction(string signatureStr, byte[] rlpEncodedTransaction)
{
if (string.IsNullOrEmpty(signatureStr))
{
return(null);
}
var signature = EthECDSASignatureFactory.ExtractECDSASignature(signatureStr);
var rawHash = new Nethereum.Util.Sha3Keccack().CalculateHash(rlpEncodedTransaction);
return(new HoardID(EthECKey.RecoverFromSignature(signature, rawHash).GetPublicAddress()));
}
public string Recover(string message, byte[] signature, bool preFixed)
{
var bytes = Encoding.ASCII.GetBytes(message);
if (!preFixed)
{
bytes = this.HashMessage(bytes);
}
var ecdaSignature = EthECDSASignatureFactory.ExtractECDSASignature(signature.ToHex());
return(Bech32.Encode("io",
Hash.Hash160B(EthECKey.RecoverFromSignature(ecdaSignature, bytes).GetPubKey().Slice(1))));
}
private static void Main(string[] args)
{
string input = File.ReadAllText("../../../Input.json");
EthereumSignature inputSignature = JsonConvert.DeserializeObject <EthereumSignature>(input);
byte[] messageBytes = Utils.GetBytes(inputSignature.Message);
byte[] messageHash = new Sha3Keccack().CalculateHash(messageBytes);
int recId = inputSignature.V.HexToByteArray()[0];
EthECDSASignature signature = EthECDSASignatureFactory.FromComponents(
inputSignature.R.HexToByteArray(),
inputSignature.S.HexToByteArray());
EthECKey publicKey = EthECKey.RecoverFromSignature(signature, recId, messageHash);
Console.WriteLine("Public address: {0}", publicKey.GetPublicAddress());
}
public virtual void RlpDecode()
{
var decodedTxList = RLP.Decode(rlpEncoded);
var transaction = (RLPCollection)decodedTxList[0];
nonce = transaction[0].RLPData;
gasPrice = transaction[1].RLPData;
gasLimit = transaction[2].RLPData;
receiveAddress = transaction[3].RLPData;
value = transaction[4].RLPData;
data = transaction[5].RLPData;
// only parse signature in case tx is signed
if (transaction[6].RLPData != null)
{
var v = transaction[6].RLPData[0];
var r = transaction[7].RLPData;
var s = transaction[8].RLPData;
signature = EthECDSASignatureFactory.FromComponents(r, s, v);
}
decoded = true;
}
public static void Verify()
{
string input = File.ReadAllText("../../Output.json");
EthereumSignature inputSignature = JsonConvert.DeserializeObject <EthereumSignature>(input);
string message = inputSignature.Msg;
byte[] messageBytes = Utils.GetBytes(message);
byte[] messageHash = new Sha3Keccack().CalculateHash(messageBytes);
byte[] rawSignature = inputSignature.Sig.HexToByteArray();
byte[] r = ArrayUtils.SubArray(rawSignature, 0, 32);
byte[] s = ArrayUtils.SubArray(rawSignature, 32, 32);
int recId = rawSignature[rawSignature.Length - 1];
EthECDSASignature signature = EthECDSASignatureFactory.FromComponents(r, s);
EthECKey publicKey = EthECKey.RecoverFromSignature(signature, recId, messageHash);
bool valid = publicKey.GetPublicAddress() == inputSignature.Address;
Console.WriteLine("{0}", valid ? "Valid" : "Invalid");
}
private static EthECDSASignature ExtractEcdsaSignature(string signature)
{
var signatureArray = signature.HexToByteArray();
var v = signatureArray[64];
if ((v == 0) || (v == 1))
{
v = (byte)(v + 27);
}
var r = new byte[32];
Array.Copy(signatureArray, r, 32);
var s = new byte[32];
Array.Copy(signatureArray, 32, s, 0, 32);
var ecdaSignature = EthECDSASignatureFactory.FromComponents(r, s, v);
return(ecdaSignature);
}
public override async Task SignAsync(Transaction transaction)
{
var txMessage = new EthereumSignTx
{
Nonce = transaction.Nonce,
GasPrice = transaction.GasPrice,
GasLimit = transaction.GasLimit,
To = transaction.ReceiveAddress,
Value = transaction.Value,
AddressNs = GetPath(),
};
if (transaction.Data.Length > 0)
{
txMessage.DataInitialChunk = transaction.Data;
txMessage.DataLength = (uint)transaction.Data.Length;
}
var signature = await TrezorManager.SendMessageAsync <EthereumTxRequest, EthereumSignTx>(txMessage);
transaction.SetSignature(EthECDSASignatureFactory.FromComponents(signature.SignatureR, signature.SignatureS, (byte)signature.SignatureV));
}
private async Task <string> BuildTransactionAsync(
string operationId,
string masterWalletAddress,
string targetWalletAddress,
string encodedData)
{
return(await _transactionRunner.RunWithTransactionAsync(async txContext =>
{
var nonce = await _noncesRepository.GetNextNonceAsync(masterWalletAddress, txContext);
var transaction = new Transaction(
to: targetWalletAddress,
amount: 0,
nonce: nonce,
gasPrice: _gasPrice,
gasLimit: _gasLimit,
data: encodedData
);
_log.Info
(
"Transaction has been built.",
new { operationId, masterWalletAddress, nonce }
);
try
{
var(v, r, s) = await _transactionSigner.SignTransactionAsync(masterWalletAddress, transaction.RawHash);
var signature = EthECDSASignatureFactory.FromComponents(r: r, s: s, v: v);
transaction.SetSignature(signature);
#region Logging
_log.Info
(
"Transaction has been signed.",
new { operationId, masterWalletAddress, nonce }
);
#endregion
}
catch (Exception e)
{
#region Logging
_log.Error
(
e,
"Failed to sign transaction.",
new { operationId, masterWalletAddress, nonce }
);
#endregion
throw;
}
var transactionData = transaction.GetRLPEncoded().ToHex(true);
try
{
await _operationsRepository.SetTransactionDataAsync(
operationId,
transactionData,
txContext);
#region Logging
_log.Info
(
"Transaction data has been saved.",
new { operationId, masterWalletAddress, nonce }
);
#endregion
}
catch (Exception e)
{
#region Logging
_log.Error
(
e,
"Failed to save transaction data.",
new { operationId, masterWalletAddress, nonce }
);
#endregion
throw;
}
return transactionData;
}));
}
public Transaction(byte[] nonce, byte[] gasPrice, byte[] gasLimit, byte[] receiveAddress, byte[] value,
byte[] data, byte[] r, byte[] s, byte v) : this(nonce, gasPrice, gasLimit, receiveAddress, value, data)
{
signature = EthECDSASignatureFactory.FromComponents(r, s, v);
}
private async Task <Dictionary <Guid, (string TxData, string TxHash)> > BuildTransactionsAsync(
string masterWalletAddress, List <OperationDetails> operations)
{
var txDict = new Dictionary <Guid, Transaction>();
foreach (var operation in operations)
{
try
{
var transaction = _buildTransactionStrategies[operation.Type].Execute
(
from: masterWalletAddress,
nonce: operation.Nonce,
operationId: operation.Id,
operationPayloadJson: operation.JsonPayload
);
txDict.Add(operation.Id, transaction);
}
catch (Exception e)
{
_log.Error
(
e,
"Failed to build transaction.",
new { operation.Id, operation.Type, masterWalletAddress, operation.Nonce }
);
throw;
}
}
_log.Info($"{txDict.Count} transactions have been built.");
try
{
var keys = txDict.Keys.ToArray();
var signedData = await _transactionSigner.SignTransactionsAsync(
masterWalletAddress, keys.Select(k => txDict[k].RawHash).ToList());
for (int i = 0; i < keys.Length; ++i)
{
var(v, r, s) = signedData[i];
var signature = EthECDSASignatureFactory.FromComponents(r, s, v);
txDict[keys[i]].SetSignature(signature);
}
_log.Info($"{txDict.Count} transactions have been signed.");
}
catch (Exception e)
{
_log.Error(e, $"Failed to sign {txDict.Count} transactions.");
throw;
}
var transactionsDataAndHashes = new Dictionary <Guid, (string, string)>(txDict.Count);
foreach (var pair in txDict)
{
var txData = pair.Value.GetRLPEncoded().ToHex(true);
var txHash = $"0x{Sha3Keccack.Current.CalculateHashFromHex(txData)}";
transactionsDataAndHashes.Add(pair.Key, (txData, txHash));
}
try
{
await _operationRepository.SetTransactionsDataAndHashesAsync(transactionsDataAndHashes);
_log.Info($"Data for {transactionsDataAndHashes.Count} transactions have been saved.");
}
catch (Exception e)
{
_log.Error(e, "Failed to save transactions data.");
throw;
}
return(transactionsDataAndHashes);
}
private async Task <(string Data, string Hash)> BuildTransactionAsync(
Guid operationId,
string operationType,
string masterWalletAddress,
long nonce,
string payloadJson)
{
Transaction transaction;
try
{
transaction = _buildTransactionStrategies[operationType].Execute
(
from: masterWalletAddress,
nonce: nonce,
operationId: operationId,
operationPayloadJson: payloadJson
);
#region Logging
_log.Info
(
"Transaction has been built.",
new { operationId, operationType, masterWalletAddress, nonce }
);
#endregion
}
catch (Exception e)
{
#region Logging
_log.Error
(
e,
"Failed to build transaction.",
new { operationId, operationType, masterWalletAddress, nonce }
);
#endregion
throw;
}
try
{
var(v, r, s) = await _transactionSigner.SignTransactionAsync(masterWalletAddress, transaction.RawHash);
var signature = EthECDSASignatureFactory.FromComponents(r: r, s: s, v: v);
transaction.SetSignature(signature);
#region Logging
_log.Info
(
"Transaction has been signed.",
new { operationId, operationType, masterWalletAddress, nonce }
);
#endregion
}
catch (Exception e)
{
#region Logging
_log.Error
(
e,
"Failed to sign transaction.",
new { operationId, operationType, masterWalletAddress, nonce }
);
#endregion
throw;
}
var transactionData = transaction.GetRLPEncoded().ToHex(true);
var transactionHash = $"0x{Sha3Keccack.Current.CalculateHashFromHex(transactionData)}";
try
{
await _operationRepository.SetTransactionDataAndHashAsync(
operationId,
transactionData,
transactionHash);
#region Logging
_log.Info
(
"Transaction data has been saved.",
new { operationId, operationType, masterWalletAddress, nonce }
);
#endregion
}
catch (Exception e)
{
#region Logging
_log.Error
(
e,
"Failed to save transaction data.",
new { operationId, operationType, masterWalletAddress, nonce }
);
#endregion
throw;
}
return(transactionData, transactionHash);
}