public TransactionSignature CalculateSignature(Transaction transaction, TransactionOutPoint outPoint, EcKey key, Script.Script redeemScript, Transaction.SigHash hashType)
{
// at the moment only signing all the outputs is supported
Thrower.If(hashType != Transaction.SigHash.All).Throw <TransactionException>("Only SigHash type 'All' supported");
//// clone the transaction and clear all the inputs
//// only the inputs for the equivalent output needs to be present for signing
var signTx = transaction.Clone();
signTx.Inputs.ForEach(input => input.ScriptBytes = Enumerable.Empty <byte>().ToArray());
// set the redeem script and clear it of 'OP_CODESEPARATOR'
var connectedScript = redeemScript.GetProgram();
var redeemConnectedScript = Script.Script.RemoveAllInstancesOfOp(connectedScript, ScriptOpCodes.OP_CODESEPARATOR);
signTx.FindInput(outPoint).ScriptBytes = redeemConnectedScript;
// serialize then hash the transaction to HEX and sign it.
var trxHex = this.Serializer.ToHex(signTx, hashType);
var hash = CryptoUtil.Sha256HashTwice(CryptoUtil.ConvertHex(trxHex));
return(new TransactionSignature(key.Sign(hash), hashType));
}
public RedeemScript Find(TransactionOutPoint outPoint)
{
return(this.Items.FirstOrDefault(t => t.Hash == outPoint.Hash && t.Index == outPoint.Index));
}
