/// <summary>
/// conovert partial sigs to suitable form for ScriptSig (or Witness).
/// This will preserve the ordering of redeem script even if it did not follow bip67.
/// </summary>
/// <param name="redeem"></param>
/// <returns></returns>
private Op[] GetPushItems(Script redeem)
{
if (PayToMultiSigTemplate.Instance.CheckScriptPubKey(redeem))
{
var sigPushes = new List <Op> {
OpcodeType.OP_0
};
foreach (var pk in redeem.GetAllPubKeys())
{
if (!partial_sigs.TryGetValue(pk, out var sigPair))
{
continue;
}
sigPushes.Add(Op.GetPushOp(sigPair.ToBytes()));
}
// check sig is more than m in case of p2multisig.
var multiSigParam = PayToMultiSigTemplate.Instance.ExtractScriptPubKeyParameters(redeem);
var numSigs = sigPushes.Count - 1;
if (multiSigParam != null && numSigs < multiSigParam.SignatureCount)
{
throw new InvalidOperationException("Not enough signatures to finalize.");
}
return(sigPushes.ToArray());
}
throw new InvalidOperationException("PSBT does not know how to finalize this type of script!");
}
