def test_signature_recoverable(self):
private_key = PrivateKey(PRIVATE_KEY_BYTES)
assert (private_key.public_key.format() == PublicKey(
recover(
MESSAGE,
deserialize_recoverable(
private_key.sign_recoverable(MESSAGE)))).format())
def signTx(self, key_bytes, tx_bytes, prevout_n, prevout_script,
prevout_value):
tx = self.loadTx(tx_bytes)
sig_hash = SegwitV0SignatureHash(prevout_script, tx, prevout_n,
SIGHASH_ALL, prevout_value)
eck = PrivateKey(key_bytes)
return eck.sign(sig_hash, hasher=None) + bytes((SIGHASH_ALL, ))
def test_signature_correct(self):
private_key = PrivateKey()
public_key = private_key.public_key
message = urandom(200)
signature = private_key.sign(message)
assert verify_signature(signature, message, public_key.format(compressed=True))
assert verify_signature(signature, message, public_key.format(compressed=False))
def check_and_fill_order(self, order):
if not order or not order.fromToken or not order.toToken or not order.tx:
return "error"
if not self.order_exists(order):
return "unknown"
if not self.order_ready(order):
return None
gas_price = self.w3.eth.generateGasPrice()
logger.debug("Loaded raw gas price {}".format(gas_price))
gas_price = int(gas_price * float(self.gas_multiplier))
nonce = self.pull_nonce()
logger.debug("Using nonce {}, gasprice {}".format(nonce, gas_price))
secret_pk = PrivateKey(order.secret)
keccak_hash = keccak.new(digest_bits=256)
keccak_hash.update(bytearray.fromhex(self.account.address.replace('0x', '')))
witnesses = secret_pk.sign_recoverable(bytes(bytearray.fromhex(keccak_hash.hexdigest())), hasher=None)
logger.debug("Signed order {} witnesses {}".format(order.tx, witnesses.hex()))
calc_witness = Account.privateKeyToAccount(order.secret.hex().replace('0x', '')).address
if calc_witness != order.witness:
logger.warn("Witness missmatch order {} witness {} order witness {}".format(order.tx, calc_witness, order.witness))
return "error"
logger.debug("Sending tx for order {}".format(order.tx))
transaction = self.uniswap_ex.functions.executeOrder(
order.fromToken,
order.toToken,
order.minReturn,
order.fee,
order.owner,
witnesses
).buildTransaction({
'gasPrice': gas_price,
'nonce': nonce,
'from': self.account.address
})
if order.fromToken.lower() not in self.whitelisted_tokens and order.toToken.lower() not in self.whitelisted_tokens and transaction['gas'] * gas_price > order.fee:
logger.debug("Order {} fee is not enought, cost {} vs {} -> {} * {}".format(order.tx, order.fee, transaction['gas'] * gas_price, transaction['gas'], gas_price))
return None
signed_txn = self.w3.eth.account.signTransaction(transaction, private_key=self.account.privateKey)
logger.debug("Signed tx for order {}".format(order.tx))
tx = Web3.toHex(self.w3.eth.sendRawTransaction(signed_txn.rawTransaction))
logger.info("Relayed order {} tx {}".format(order.tx, tx))
return tx
def test_sign(self):
coin_settings = {'rpcport': 0, 'rpcauth': 'none', 'blocks_confirmed': 1, 'conf_target': 1}
ci = BTCInterface(coin_settings, 'regtest')
vk = i2b(ci.getNewSecretKey())
pk = ci.getPubkey(vk)
message = 'test signing message'
message_hash = hashlib.sha256(bytes(message, 'utf-8')).digest()
eck = PrivateKey(vk)
sig = eck.sign(message.encode('utf-8'))
ci.verifySig(pk, message_hash, sig)
class Credentials:
def __init__(self, private_key):
if private_key.startswith("0x"):
private_key = private_key[2:]
self.private_key = PrivateKey(bytes(bytearray.fromhex(private_key)))
@property
def address(self):
keccak_hash = keccak.new(digest_bits=256)
keccak_hash.update(
self.private_key.public_key.format(compressed=False, )[1:])
return to_checksum_address(keccak_hash.digest()[-20:])
def sign(self, message):
msg_hash = bytes(bytearray.fromhex(remove_0x_prefix(message)))
signature_bytes = self.private_key.sign_recoverable(msg_hash,
hasher=None)
assert len(signature_bytes) == 65
r = "0x" + format(big_endian_to_int(signature_bytes[0:32]), "x")
s = "0x" + format(big_endian_to_int(signature_bytes[32:64]), "x")
v = hex(ord(signature_bytes[64:65]) + 27)
return {"r": r, "s": s, "v": v}
def generate_signature(cls, message, private_key):
x = ffi.new('long long *')
x[0] = random.SystemRandom().randint(0, sys.maxsize)
key = PrivateKey.from_hex(private_key)
signature = key.sign(message.encode('utf-8'),
custom_nonce=(ffi.NULL, x))
return base64.b64encode(signature).decode('utf-8')
def generate_deterministic_signature(cls,
config,
message: str,
private_key=None):
if not private_key:
private_key = config.private_key
key = PrivateKey.from_hex(private_key)
signature = key.sign(message.encode('utf-8'))
return base64.b64encode(signature).decode('utf-8')
def __init__(self, wif, username):
self.wif = wif
self.key = PrivateKey.from_hex(binascii.hexlify(
base58.b58decode(wif)
)[2:-10].decode())
self.public_key = self.key.public_key
self.username = username
self.username_signature = self.generate_service_username_signature()
self.cipher_key = PBKDF2(hashlib.sha256(
self.wif.encode('utf-8')
).hexdigest(), 'salt', 400).read(32)
def generate(cls, username):
num = os.urandom(32).hex()
wif = cls.to_wif(num)
inst = cls(wif, username)
inst.key = PrivateKey.from_hex(num)
inst.public_key = inst.key.public_key
inst.username = username
inst.username_signature = base64.b64encode(
inst.key.sign(inst.username.encode("utf-8"))
).decode("utf-8")
return inst
def send_handshake(self, peer):
self._sc.log.debug('send_handshake %s', peer._address)
peer._mx.acquire()
try:
# TODO: Drain peer._recv_messages
if not peer._recv_messages.empty():
self._sc.log.warning(
'send_handshake %s - Receive queue dumped.', peer._address)
while not peer._recv_messages.empty():
peer._recv_messages.get(False)
msg = MsgHandshake()
msg._timestamp = int(time.time())
key_r = rfc6979_hmac_sha256_generate(self._csprng, 32)
k = PrivateKey(key_r)
msg._ephem_pk = PublicKey.from_secret(key_r).format()
self.check_handshake_ephem_key(peer, msg._timestamp, msg._ephem_pk)
ss = k.ecdh(peer._pubkey)
hashed = hashlib.sha512(
ss + struct.pack('>Q', msg._timestamp)).digest()
peer._ke = hashed[:32]
peer._km = hashed[32:]
nonce = peer._km[24:]
payload = self._sc._version
nk = PrivateKey(self._network_key)
sig = nk.sign_recoverable(peer._km)
payload += sig
aad = msg.encode_aad()
aad += nonce
cipher = ChaCha20_Poly1305.new(key=peer._ke, nonce=nonce)
cipher.update(aad)
msg._ct, msg._mac = cipher.encrypt_and_digest(payload)
peer._sent_nonce = hashlib.sha256(nonce + msg._mac).digest()
peer._recv_nonce = hashlib.sha256(peer._km).digest() # Init nonce
peer._last_handshake_at = msg._timestamp
peer._ready = False # Wait for peer to complete handshake
self.send_msg(peer, msg)
finally:
peer._mx.release()
def test_add_update(self):
private_key = PrivateKey(b'\x01')
new_private_key = private_key.add(b'\x09', update=True)
assert new_private_key.to_int() == 10
assert private_key is new_private_key
def test_add(self):
assert PrivateKey(b'\x01').add(b'\x09').to_int() == 10
def test_ecdh(self):
a = PrivateKey()
b = PrivateKey()
assert a.ecdh(b.public_key.format()) == b.ecdh(a.public_key.format())
def test_from_der(self):
assert PrivateKey.from_der(PRIVATE_KEY_DER).secret == PRIVATE_KEY_BYTES
def test_from_pem(self):
assert PrivateKey.from_pem(PRIVATE_KEY_PEM).secret == PRIVATE_KEY_BYTES
def test_from_int(self):
assert PrivateKey.from_int(PRIVATE_KEY_NUM).secret == PRIVATE_KEY_BYTES
def test_signature_deterministic(self):
assert PrivateKey(PRIVATE_KEY_BYTES).sign(MESSAGE) == SIGNATURE
def test_to_der(self):
assert PrivateKey(PRIVATE_KEY_BYTES).to_der() == PRIVATE_KEY_DER
def generate_signature_with_private_key(cls, private_key, message):
x = ffi.new('long *')
x[0] = random.SystemRandom().randint(0, sys.maxint)
key = PrivateKey.from_hex(private_key)
signature = key.sign(message, custom_nonce=(ffi.NULL, x))
return base64.b64encode(signature)
def test_multiply(self):
assert PrivateKey(b'\x05').multiply(b'\x05').to_int() == 25
def test_multiply_update(self):
private_key = PrivateKey(b'\x05')
new_private_key = private_key.multiply(b'\x05', update=True)
assert new_private_key.to_int() == 25
assert private_key is new_private_key
def test_signature_invalid_hasher(self):
with pytest.raises(ValueError):
PrivateKey().sign(MESSAGE, lambda x: sha512(x).digest())
def test_from_hex(self):
assert PrivateKey.from_hex(PRIVATE_KEY_HEX).secret == PRIVATE_KEY_BYTES
def test_to_hex(self):
assert PrivateKey(PRIVATE_KEY_BYTES).to_hex() == PRIVATE_KEY_HEX
def test_public_key(self):
assert PrivateKey(
PRIVATE_KEY_BYTES).public_key.format() == PUBLIC_KEY_COMPRESSED
def signCompact(self, k, message):
message_hash = hashlib.sha256(bytes(message, 'utf-8')).digest()
privkey = PrivateKey(k)
return privkey.sign_recoverable(message_hash, hasher=None)[:64]
def test_to_int(self):
assert PrivateKey(PRIVATE_KEY_BYTES).to_int() == PRIVATE_KEY_NUM
def proveDLEAG(self, key):
privkey = PrivateKey(key)
return dleag_prove(privkey)
def test_to_pem(self):
assert PrivateKey(PRIVATE_KEY_BYTES).to_pem() == PRIVATE_KEY_PEM
