def test_unsupported_cipher(self):
@utils.register_interface(BlockCipherAlgorithm)
class FakeAlgorithm(object):
block_size = 64
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
backend.create_cmac_ctx(FakeAlgorithm())
def test_unsupported_cipher(self):
@utils.register_interface(BlockCipherAlgorithm)
class FakeAlgorithm(object):
block_size = 64
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
backend.create_cmac_ctx(FakeAlgorithm())
def __init__(
self,
algorithm: ciphers.BlockCipherAlgorithm,
backend: typing.Any = None,
ctx: typing.Optional["_CMACContext"] = None,
):
if not isinstance(algorithm, ciphers.BlockCipherAlgorithm):
raise TypeError("Expected instance of BlockCipherAlgorithm.")
self._algorithm = algorithm
if ctx is None:
from cryptography.hazmat.backends.openssl.backend import (
backend as ossl, )
self._ctx = ossl.create_cmac_ctx(self._algorithm)
else:
self._ctx = ctx
def test_unsupported_cipher(self):
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
backend.create_cmac_ctx(DummyCipherAlgorithm())
def test_unsupported_cipher(self):
with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
backend.create_cmac_ctx(DummyCipherAlgorithm())