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 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 __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 test_from_hex(self):
assert PrivateKey.from_hex(PRIVATE_KEY_HEX).secret == PRIVATE_KEY_BYTES
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 generate_deterministic_signature(cls, message):
key = PrivateKey.from_hex(Config.private_key)
signature = key.sign(message)
return base64.b64encode(signature)
