def fingerprint(self) -> bytes:
"""
Gets current node fingerprint.
:return: first four bytes of SHA256(RIPEMD160(public key))
"""
return hash160(self.public_key.sec())[:4]
def test_repr(self):
pub_key = "020bf81062796b773dcb4055dfab420ef92fa95ebd92426a994a464dec5b321004"
pub_key_bytes = bytes.fromhex(pub_key)
h160_pub_key = hash160(pub_key_bytes)
script = p2wpkh_script(h160=h160_pub_key)
self.assertEqual(str(script),
"OP_0 6c743a71b8899dcd30882f5affa712e130339866")
script = p2pkh_script(h160=h160_pub_key)
self.assertEqual(
str(script),
"OP_DUP OP_HASH160 6c743a71b8899dcd30882f5affa712e130339866 OP_EQUALVERIFY OP_CHECKSIG"
)
# still hashing pub key instead of script -> here it does not matter
script = p2wsh_script(h256=sha256(pub_key_bytes))
self.assertEqual(
str(script),
"OP_0 8634ffba92b015a6c13840d787a17a4a8c0e6c39aeeb56e3fd3d68d97ee2fbd8"
)
script = p2sh_script(h160=h160_pub_key)
self.assertEqual(
str(script),
"OP_HASH160 6c743a71b8899dcd30882f5affa712e130339866 OP_EQUAL")
def h160(self, compressed: bool = True) -> bytes:
"""
SHA256 followed by RIPEMD160 of public key.
:param compressed: whether to use compressed format (default=True)
:return: SHA256(RIPEMD160(public key))
"""
return hash160(self.sec(compressed=compressed))
def p2sh_p2wpkh_address(self, node: Prv_or_PubKeyNode) -> str:
"""
Generates p2wpkh wrapped in p2sh address from node.
:param node: key node
:return: p2sh-p2wpkh address
"""
return h160_to_p2sh_address(h160=hash160(
p2wpkh_script(h160=node.public_key.h160()).raw_serialize()),
testnet=self.testnet)
def p2sh_p2wsh_address(self, node: Prv_or_PubKeyNode) -> str:
"""
Generates p2wsh wrapped in p2sh address from node.
:param node: key node
:return: p2sh-p2wsh address
"""
# [OP_1, sec, OP_1, OP_CHECKMULTISIG]
witness_script = Script([0x51, node.public_key.sec(), 0x51, 0xae])
sha256_witness_script = sha256(witness_script.raw_serialize())
redeem_script = p2wsh_script(
h256=sha256_witness_script).raw_serialize()
return h160_to_p2sh_address(h160=hash160(redeem_script),
testnet=self.testnet)