def VerifyMessage(address, message, sig):
sig = base64.b64decode(sig)
hash = message.GetHash()
pubkey = CPubKey.recover_compact(hash, sig)
return str(P2PKHBitcoinAddress.from_pubkey(pubkey)) == str(address)
def __init__(self, key: CBitcoinSecret, address_type: str = "p2pkh"):
self.key_index = None
self.type = address_type
self.key = key
if address_type == "p2pkh":
self.address = P2PKHBitcoinAddress.from_pubkey(self.key.pub)
elif address_type == "p2sh":
self.address = P2SHBitcoinAddress.from_redeemScript(
CScript([self.key.pub, OP_CHECKSIG]))
elif address_type == "p2wpkh":
key_hash = Hash160(self.key.pub)
script_pub_key = CScript([OP_0, key_hash])
self.address = P2WPKHBitcoinAddress.from_scriptPubKey(
script_pub_key)
elif address_type == "p2wsh":
self.witness_program = CScript([self.key.pub, OP_CHECKSIG])
script_hash = hashlib.sha256(self.witness_program).digest()
script_pub_key = CScript([OP_0, script_hash])
self.address = P2WSHBitcoinAddress.from_scriptPubKey(
script_pub_key)
else:
raise UnsupportedAddressTypeError()
self.value = 0
self.txid = None
self.vout = None
def print_verbose(signature, key, msg):
secret = CBitcoinSecret(key)
address = P2PKHBitcoinAddress.from_pubkey(secret.pub)
message = BitcoinMessage(msg)
print('Address: %s' % address)
print('Message: %s' % msg)
print('Signature: %s' % signature)
print('Verified: %s' % VerifyMessage(address, message, signature))
print('\nTo verify using bitcoin core:')
print('\n`bitcoin-cli verifymessage %s \'%s\' \'%s\'`\n' % (address, signature.decode('ascii'), msg))
def test_from_invalid_pubkeys(self):
"""Create P2PKHBitcoinAddress's from invalid pubkeys"""
# first test with accept_invalid=True
def T(invalid_pubkey, expected_str_addr):
addr = P2PKHBitcoinAddress.from_pubkey(invalid_pubkey,
accept_invalid=True)
self.assertEqual(str(addr), expected_str_addr)
T(x(''), '1HT7xU2Ngenf7D4yocz2SAcnNLW7rK8d4E')
T(
x('0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c72'
), '1L9V4NXbNtZsLjrD3nkU7gtEYLWRBWXLiZ')
# With accept_invalid=False we should get CBitcoinAddressError's
with self.assertRaises(CBitcoinAddressError):
P2PKHBitcoinAddress.from_pubkey(x(''))
with self.assertRaises(CBitcoinAddressError):
P2PKHBitcoinAddress.from_pubkey(
x('0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c72'
))
with self.assertRaises(CBitcoinAddressError):
P2PKHBitcoinAddress.from_pubkey(
CPubKey(
x('0378d430274f8c5ec1321338151e9f27f4c676a008bdf8638d07c0b6be9ab35c72'
)))
# There's also a corresponding x() convenience function that takes big-endian
# hex and converts it to bytes.
txid = lx('7e195aa3de827814f172c362fcf838d92ba10e3f9fdd9c3ecaf79522b311b22d')
vout = 0
# Create the txin structure, which includes the outpoint. The scriptSig
# defaults to being empty.
txin = CMutableTxIn(COutPoint(txid, vout))
# We also need the scriptPubKey of the output we're spending because
# SignatureHash() replaces the transaction scriptSig's with it.
#
# Here we'll create that scriptPubKey from scratch using the pubkey that
# corresponds to the secret key we generated above.
txin_scriptPubKey = \
P2PKHBitcoinAddress.from_pubkey(seckey.pub).to_scriptPubKey()
# Create the txout. This time we create the scriptPubKey from a Bitcoin
# address.
txout = CMutableTxOut(
0.001 * COIN,
CBitcoinAddress('1C7zdTfnkzmr13HfA2vNm5SJYRK6nEKyq8').to_scriptPubKey())
# Create the unsigned transaction.
tx = CMutableTransaction([txin], [txout])
# Calculate the signature hash for that transaction.
sighash = SignatureHash(txin_scriptPubKey, tx, 0, SIGHASH_ALL)
# Now sign it. We have to append the type of signature we want to the end, in
# this case the usual SIGHASH_ALL.
def T(invalid_pubkey: bytes, expected_str_addr: str) -> None:
addr = P2PKHBitcoinAddress.from_pubkey(invalid_pubkey, accept_invalid=True)
self.assertEqual(str(addr), expected_str_addr)
def T(pubkey: bytes, expected_str_addr: str) -> None:
addr = P2PKHBitcoinAddress.from_pubkey(pubkey)
self.assertEqual(str(addr), expected_str_addr)
def T(pubkey, expected_str_addr):
addr = P2PKHBitcoinAddress.from_pubkey(pubkey)
self.assertEqual(str(addr), expected_str_addr)