def to_scriptPubKey(self, nested=False):
"""Convert an address to a scriptPubKey"""
assert self.nVersion == ravencoin.params.BASE58_PREFIXES['PUBKEY_ADDR']
return script.CScript([
script.OP_DUP, script.OP_HASH160, self, script.OP_EQUALVERIFY,
script.OP_CHECKSIG
])
def to_redeemScript(self):
return script.CScript([
script.OP_DUP, script.OP_HASH160, self, script.OP_EQUALVERIFY,
script.OP_CHECKSIG
])
def to_scriptPubKey(self):
"""Convert an address to a scriptPubKey"""
assert self.witver == 0
return script.CScript([0, self])
def from_scriptPubKey(cls,
scriptPubKey,
accept_non_canonical_pushdata=True,
accept_bare_checksig=True):
"""Convert a scriptPubKey to a P2PKH address
Raises CRavencoinAddressError if the scriptPubKey isn't of the correct
form.
accept_non_canonical_pushdata - Allow non-canonical pushes (default True)
accept_bare_checksig - Treat bare-checksig as P2PKH scriptPubKeys (default True)
"""
if accept_non_canonical_pushdata:
# Canonicalize script pushes
scriptPubKey = script.CScript(
scriptPubKey) # in case it's not a CScript instance yet
try:
scriptPubKey = script.CScript(
tuple(scriptPubKey)) # canonicalize
except ravencoin.core.script.CScriptInvalidError:
raise CRavencoinAddressError(
'not a P2PKH scriptPubKey: script is invalid')
if scriptPubKey.is_witness_v0_keyhash():
return cls.from_bytes(
scriptPubKey[2:22],
ravencoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])
elif scriptPubKey.is_witness_v0_nested_keyhash():
return cls.from_bytes(
scriptPubKey[3:23],
ravencoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])
elif (len(scriptPubKey) == 25
and _bord(scriptPubKey[0]) == script.OP_DUP
and _bord(scriptPubKey[1]) == script.OP_HASH160
and _bord(scriptPubKey[2]) == 0x14
and _bord(scriptPubKey[23]) == script.OP_EQUALVERIFY
and _bord(scriptPubKey[24]) == script.OP_CHECKSIG):
return cls.from_bytes(
scriptPubKey[3:23],
ravencoin.params.BASE58_PREFIXES['PUBKEY_ADDR'])
elif accept_bare_checksig:
pubkey = None
# We can operate on the raw bytes directly because we've
# canonicalized everything above.
if (len(scriptPubKey) == 35 # compressed
and _bord(scriptPubKey[0]) == 0x21
and _bord(scriptPubKey[34]) == script.OP_CHECKSIG):
pubkey = scriptPubKey[1:34]
elif (len(scriptPubKey) == 67 # uncompressed
and _bord(scriptPubKey[0]) == 0x41
and _bord(scriptPubKey[66]) == script.OP_CHECKSIG):
pubkey = scriptPubKey[1:65]
if pubkey is not None:
return cls.from_pubkey(pubkey, accept_invalid=True)
raise CRavencoinAddressError('not a P2PKH scriptPubKey')
def to_scriptPubKey(self):
"""Convert an address to a scriptPubKey"""
assert self.nVersion == ravencoin.params.BASE58_PREFIXES['SCRIPT_ADDR']
return script.CScript([script.OP_HASH160, self, script.OP_EQUAL])