diff options
| -rw-r--r-- | cryptography/primitives/block/ciphers.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cryptography/primitives/block/ciphers.py b/cryptography/primitives/block/ciphers.py index cf54aa35..01dbd027 100644 --- a/cryptography/primitives/block/ciphers.py +++ b/cryptography/primitives/block/ciphers.py @@ -17,7 +17,7 @@ from __future__ import absolute_import, division, print_function class AES(object): name = "AES" block_size = 128 - key_sizes = set([128, 192, 256]) + key_sizes = frozenset([128, 192, 256]) def __init__(self, key): super(AES, self).__init__() |