public virtual string SignTransaction(string aTxData, ICurrencyTransaction aValidationInfo)
{
if (aValidationInfo.Outputs.Length > 2)
{
throw new ArgumentException("Invalid output.");
}
var lTxOutput = aValidationInfo.Outputs.First();
var lFromAddress = aValidationInfo.Inputs[0].Address.ToLower();
var lToAddress = lTxOutput.Address;
var lKeyIndex = FAddresses[lFromAddress];
var lAmount = lTxOutput.Amount;
var lTokenData = !string.IsNullOrEmpty(lTxOutput.Script) ? lTxOutput.Script : null;
//var lNonceStr = Encoding.Default.GetString(HexStringToByteArray(aTxData)); //I removed this line because biginteger already accepts hex
string lCleanHexNonce = string.Concat("0", aTxData.Replace("0x", string.Empty));
var lNonce = BigInteger.Parse(lCleanHexNonce, System.Globalization.NumberStyles.HexNumber);
var lGasLimit = lTokenData == null ? 21000 : 60000; // number of gass units you can use
BigInteger lGasPrice = aValidationInfo.TxFee / lGasLimit;
var lChainID = aValidationInfo.CurrencyId == 10196 ? 3 : 1; //10196 is ropsten but this may be changed to a boolean into currency item
var lResult = (new TransactionSigner()).SignTransaction(GetBinaryPrivateKey((int)lKeyIndex), lChainID, lToAddress, lAmount, lNonce, lGasPrice, lGasLimit, lTokenData);
return(lResult);
}
public virtual string SignTransaction(string aTxData, ICurrencyTransaction aValidationInfo)
{
if (!CustomTransaction.GetCustomTransaction(Id, out Transaction tx, aTxData, Network))
{
tx = new Transaction(aTxData, Network);
}
// check how much is being spent and insure all is spent.
BigInteger lTotalSent = 0;
foreach (ITransactionUnit linput in aValidationInfo.Inputs)
{
lTotalSent += linput.Amount;
}
BigInteger lTotalSpending = aValidationInfo.TxFee;
foreach (ITransactionUnit lOutput in aValidationInfo.Outputs)
{
lTotalSpending += lOutput.Amount;
}
if (lTotalSent != lTotalSpending)
{
throw new Exception("The total of the inputs does not equal the total outputs.");
}
// Check output amounts in the transaction to sign.
int lValidCount = 0;
foreach (TxOut lOutput in tx.Outputs)
{
string lAddress = lOutput.GetAddress(Network);
foreach (ITransactionUnit lValOut in aValidationInfo.Outputs)
{
if (lAddress == lValOut.Address)
{
if (lOutput.Value.Satoshi == lValOut.Amount)
{
lValidCount++;
}
}
}
}
if (lValidCount != aValidationInfo.Outputs.Length)
{
throw new Exception("Transaction to sign is not correct.");
}
List <CCKey> lKeys = new List <CCKey>();
List <ICoin> lCoins = new List <ICoin>();
for (int i = 0; i < tx.Inputs.Count; i++)
{
if (!FAddressLookup.TryGetValue(aValidationInfo.Inputs[i].Address, out long lIndex))
{
throw new Exception(string.Format("Address {0} does not exist.", aValidationInfo.Inputs[i].Address));
}
lKeys.Add(GetCCKey(lIndex));
ITransactionUnit lPrevOut = aValidationInfo.Inputs
.Where(lInput => lInput.TxID == tx.Inputs[i].PrevOut.Hash.ToString() && lInput.Index == tx.Inputs[i].PrevOut.N)
.FirstOrDefault();
if (lPrevOut == null)
{
throw new Exception("Failed to found previous tx out information");
}
lCoins.Add(new Coin(tx.Inputs[i].PrevOut, new TxOut()
{
ScriptPubKey = tx.Inputs[i].ScriptSig,
Value = new Money((long)lPrevOut.Amount)
}));
tx.Inputs[i].ScriptSig = Script.Empty;
}
var lHexTest = tx.ToHex();
tx.Sign(lKeys.ToArray(), lCoins.ToArray());
return(tx.ToHex());
}
