public void ConvertP2wpkhTest()
{
IOperation[] ops = new IOperation[2] {
new PushDataOp(OP._0), new PushDataOp(Helper.GetBytes(20))
};
ScriptSerializer ser = new ScriptSerializer();
byte[] actual = ser.ConvertP2wpkh(ops);
byte[] expected = Helper.HexToBytes($"76a914{Helper.GetBytesHex(20)}88ac");
Assert.Equal(expected, actual);
}
private bool VerifyP2wpkh(ITransaction tx, int index, PushDataOp sigPush, PushDataOp pubPush,
ReadOnlySpan <byte> pubScrData, ulong amount, out string error)
{
if (sigPush.data == null || pubPush.data == null)
{
error = "Invalid data pushes in P2WPKH witness.";
return(false);
}
var actualHash = hash160.ComputeHash(pubPush.data);
if (!pubScrData.Slice(2, 20).SequenceEqual(actualHash))
{
error = "Invalid hash.";
return(false);
}
if (!Signature.TryReadStrict(sigPush.data, out Signature sig, out error))
{
error = $"Invalid signature ({error})";
return(false);
}
if (!PublicKey.TryRead(pubPush.data, out PublicKey pubK))
{
error = "Invalid public key";
return(false);
}
byte[] toSign = tx.SerializeForSigningSegWit(scrSer.ConvertP2wpkh(actualHash), index, amount, sig.SigHash);
if (calc.Verify(toSign, sig, pubK, ForceLowS))
{
error = null;
return(true);
}
else
{
error = "Invalid signature";
return(false);
}
}