mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-07-03 15:40:59 +02:00
36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
# This file is dual licensed under the terms of the Apache License, Version
|
|
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
|
|
# for complete details.
|
|
|
|
from __future__ import absolute_import, division, print_function
|
|
|
|
import hmac
|
|
import warnings
|
|
|
|
from cryptography import utils
|
|
from cryptography.hazmat.bindings._constant_time import lib
|
|
|
|
|
|
if hasattr(hmac, "compare_digest"):
|
|
def bytes_eq(a, b):
|
|
if not isinstance(a, bytes) or not isinstance(b, bytes):
|
|
raise TypeError("a and b must be bytes.")
|
|
|
|
return hmac.compare_digest(a, b)
|
|
|
|
else:
|
|
warnings.warn(
|
|
"Support for your Python version is deprecated. The next version of "
|
|
"cryptography will remove support. Please upgrade to a 2.7.x "
|
|
"release that supports hmac.compare_digest as soon as possible.",
|
|
utils.PersistentlyDeprecated2018,
|
|
)
|
|
|
|
def bytes_eq(a, b):
|
|
if not isinstance(a, bytes) or not isinstance(b, bytes):
|
|
raise TypeError("a and b must be bytes.")
|
|
|
|
return lib.Cryptography_constant_time_bytes_eq(
|
|
a, len(a), b, len(b)
|
|
) == 1
|