protected override bool CheckScriptSigCore(Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps) { var ops = scriptSigOps; if (ops.Length != 1) { return(false); } return(ops[0].PushData != null && TransactionSignature.IsValid(ops[0].PushData)); }
protected override bool CheckScriptSigCore(Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps) { var ops = scriptSigOps; if (ops.Length != 2) { return(false); } return(ops[0].PushData != null && ((ops[0].Code == OpcodeType.OP_0) || TransactionSignature.IsValid(ops[0].PushData, ScriptVerify.None)) && ops[1].PushData != null && PubKey.Check(ops[1].PushData, false)); }
private static Script CombineMultisig(Script scriptPubKey, TransactionChecker checker, byte[][] sigs1, byte[][] sigs2, HashVersion hashVersion) { // Combine all the signatures we've got: List <TransactionSignature> allsigs = new List <TransactionSignature>(); foreach (var v in sigs1) { if (TransactionSignature.IsValid(v)) { allsigs.Add(new TransactionSignature(v)); } } foreach (var v in sigs2) { if (TransactionSignature.IsValid(v)) { allsigs.Add(new TransactionSignature(v)); } } var multiSigParams = PayToMultiSigTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey); if (multiSigParams == null) { throw new InvalidOperationException("The scriptPubKey is not a valid multi sig"); } Dictionary <PubKey, TransactionSignature> sigs = new Dictionary <PubKey, TransactionSignature>(); foreach (var sig in allsigs) { foreach (var pubkey in multiSigParams.PubKeys) { if (sigs.ContainsKey(pubkey)) { continue; // Already got a sig for this pubkey } ScriptEvaluationContext eval = new ScriptEvaluationContext(); if (eval.CheckSig(sig, pubkey, scriptPubKey, checker, hashVersion)) { sigs.AddOrReplace(pubkey, sig); } } } // Now build a merged CScript: int nSigsHave = 0; Script result = new Script(OpcodeType.OP_0); // pop-one-too-many workaround foreach (var pubkey in multiSigParams.PubKeys) { if (sigs.ContainsKey(pubkey)) { result += Op.GetPushOp(sigs[pubkey].ToBytes()); nSigsHave++; } if (nSigsHave >= multiSigParams.SignatureCount) { break; } } // Fill any missing with OP_0: for (int i = nSigsHave; i < multiSigParams.SignatureCount; i++) { result += OpcodeType.OP_0; } return(result); }
private bool CheckWitScriptCore(WitScript witScript) { return(witScript.PushCount == 2 && ((witScript[0].Length == 1 && witScript[0][0] == 0) || (TransactionSignature.IsValid(witScript[0], ScriptVerify.None))) && PubKey.Check(witScript[1], false)); }