def hashX_from_script(cls, script):
'''Returns a hashX from a script, or None if the script is provably
unspendable so the output can be dropped.
'''
if script and script[0] == OpCodes.OP_RETURN:
return None
# Qtum: make p2pk and p2pkh the same hashX
if (len(script) == 35 and script[0] == 0x21 and script[1] in [2, 3]) \
or (len(script) == 67 and script[0] == 0x41 and script[1] in [4, 6, 7]) \
and script[-1] == OpCodes.OP_CHECKSIG:
pubkey = script[1:-1]
script = ScriptPubKey.P2PKH_script(hash160(pubkey))
return sha256(script).digest()[:HASHX_LEN]
def test_hash160():
assert lib_hash.hash160(
b'hash_160'
) == b'\xb3\x96\x94\xfc\x978R\xa7)XqY\xbb\xdc\xeb\xac\xa7%\xb8$'
def P2PKH_address_from_pubkey(cls, pubkey):
'''Return a coin address given a public key.'''
return cls.P2PKH_address_from_hash160(hash160(pubkey))
def identifier(self):
'''Return the key's identifier as 20 bytes.'''
return hash160(self.pubkey_bytes)
