diff options
Diffstat (limited to 'cryptography/hazmat/primitives/hmac.py')
| -rw-r--r-- | cryptography/hazmat/primitives/hmac.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/cryptography/hazmat/primitives/hmac.py b/cryptography/hazmat/primitives/hmac.py index fc5e777c..1457ed78 100644 --- a/cryptography/hazmat/primitives/hmac.py +++ b/cryptography/hazmat/primitives/hmac.py @@ -22,6 +22,8 @@ from cryptography.hazmat.primitives import interfaces class HMAC(object): def __init__(self, key, algorithm, ctx=None, backend=None): super(HMAC, self).__init__() + if not isinstance(algorithm, interfaces.HashAlgorithm): + raise TypeError("Expected instance of interfaces.HashAlgorithm.") self.algorithm = algorithm if backend is None: |