public override bool CanCombineScriptSig(Script scriptPubKey, Script a, Script b)
{
var escrow = EscrowScriptBuilder.ExtractEscrowScriptPubKeyParameters(scriptPubKey);
if (escrow == null)
{
return(false);
}
var aSigs = EscrowScriptBuilder.ExtractScriptSigParameters(a);
var bSigs = EscrowScriptBuilder.ExtractScriptSigParameters(b);
if (aSigs == null || bSigs == null)
{
return(true);
}
return(aSigs.Length == bSigs.Length);
}
public override Script CombineScriptSig(Script scriptPubKey, Script a, Script b)
{
// Combine all the signatures we've got:
var aSigs = EscrowScriptBuilder.ExtractScriptSigParameters(a);
if (aSigs == null)
{
return(b);
}
var bSigs = EscrowScriptBuilder.ExtractScriptSigParameters(b);
if (bSigs == null)
{
return(a);
}
if (aSigs.Length == 1)
{
var sig = aSigs[0] ?? bSigs[0];
return(new Script(Op.GetPushOp(sig.ToBytes())));
}
int sigCount = 0;
TransactionSignature[] sigs = new TransactionSignature[2];
for (int i = 0; i < 2; i++)
{
var aSig = i < aSigs.Length ? aSigs[i] : null;
var bSig = i < bSigs.Length ? bSigs[i] : null;
var sig = aSig ?? bSig;
if (sig != null)
{
sigs[i] = sig;
sigCount++;
}
if (sigCount == 2)
{
break;
}
}
if (sigCount == 2)
{
sigs = sigs.Where(s => s != null && s != TransactionSignature.Empty).ToArray();
}
return(EscrowScriptBuilder.GenerateScriptSig(sigs));
}