def checkmultisig(self):
outputHash = self.transaction.hashOutput(self.input, self.output)
threshold = DataType.bytesToInt(self.output.extraData)
match = 0
publicKeys = self.input.witness[::2]
multiSigAddressBytes = bytearray()
for publicKey in publicKeys:
multiSigAddressBytes.extend(publicKey)
multiSigAddress = Crypto.generateAddress(multiSigAddressBytes)
if multiSigAddress == self.output.address:
signatures = self.input.witness[1::2]
for public, signature in zip(publicKeys, signatures):
if Crypto.verify(public, signature, outputHash):
match += 1
self.stack.append(match >= threshold)
def checksig(self):
public = self.pop()
signature = self.pop()
outputHash = self.transaction.hashOutput(self.input, self.output)
self.stack.append(Crypto.verify(public, signature, outputHash))
def verify(self, signature, message):
return Crypto.verify(self.public, signature, message)