protected override bool CheckScriptSigCore(Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps)
{
if (!scriptSig.IsPushOnly)
{
return(false);
}
if (scriptSigOps[0].Code != OpcodeType.OP_0)
{
return(false);
}
if (scriptSigOps.Length == 1)
{
return(false);
}
if (!scriptSigOps.Skip(1).All(s => TransactionSignature.ValidLength(s.PushData.Length) || s.Code == OpcodeType.OP_0))
{
return(false);
}
if (scriptPubKeyOps != null)
{
if (!CheckScriptPubKeyCore(scriptPubKey, scriptPubKeyOps))
{
return(false);
}
var sigCountExpected = scriptPubKeyOps[0].GetValue();
return(sigCountExpected == scriptSigOps.Length + 1);
}
return(true);
}
protected override bool CheckScriptSigCore(Network network, Script scriptSig, Op[] scriptSigOps, Script scriptPubKey, Op[] scriptPubKeyOps)
{
if (!scriptSig.IsPushOnly)
{
return(false);
}
if (scriptSigOps[0].Code != OpcodeType.OP_0)
{
return(false);
}
if (scriptSigOps.Length == 1)
{
return(false);
}
if (!scriptSigOps.Skip(1).All(s => TransactionSignature.ValidLength(s.PushData.Length) || s.Code == OpcodeType.OP_0))
{
return(false);
}
if (scriptPubKeyOps != null)
{
if (!CheckScriptPubKeyCore(scriptPubKey, scriptPubKeyOps))
{
return(false);
}
(PubKey[] pubKeys, int sigCountExpected) = network.Federations.GetFederation(scriptPubKeyOps[0].PushData).GetFederationDetails();
return(sigCountExpected == scriptSigOps.Length + 1);
}
return(true);
}
public TransactionSignature ExtractScriptSigParameters(Script scriptSig)
{
var ops = scriptSig.ToOps().ToArray();
if(!CheckScriptSigCore(scriptSig, ops, null, null))
return null;
var data = ops[0].PushData;
if(!TransactionSignature.ValidLength(data.Length))
return null;
try
{
return new TransactionSignature(data);
}
catch(FormatException)
{
return null;
}
}
public TransactionSignature ExtractScriptSigParameters(Network network, Script scriptSig)
{
Op[] ops = scriptSig.ToOps().ToArray();
if (!CheckScriptSigCore(network, scriptSig, ops, null, null))
{
return(null);
}
byte[] data = ops[0].PushData;
if (!TransactionSignature.ValidLength(data.Length))
{
return(null);
}
try
{
return(new TransactionSignature(data));
}
catch (FormatException)
{
return(null);
}
}
