constant_time.py 430 B

1234567891011121314
  1. # This file is dual licensed under the terms of the Apache License, Version
  2. # 2.0, and the BSD License. See the LICENSE file in the root of this repository
  3. # for complete details.
  4. from __future__ import absolute_import, division, print_function
  5. import hmac
  6. def bytes_eq(a, b):
  7. if not isinstance(a, bytes) or not isinstance(b, bytes):
  8. raise TypeError("a and b must be bytes.")
  9. return hmac.compare_digest(a, b)