pct_warnings.py 2.2 KB

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  1. # -*- coding: ascii -*-
  2. #
  3. # pct_warnings.py : PyCrypto warnings file
  4. #
  5. # Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net>
  6. #
  7. # ===================================================================
  8. # The contents of this file are dedicated to the public domain. To
  9. # the extent that dedication to the public domain is not available,
  10. # everyone is granted a worldwide, perpetual, royalty-free,
  11. # non-exclusive license to exercise all rights associated with the
  12. # contents of this file for any purpose whatsoever.
  13. # No rights are reserved.
  14. #
  15. # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16. # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17. # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18. # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19. # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20. # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21. # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22. # SOFTWARE.
  23. # ===================================================================
  24. #
  25. # Base classes. All our warnings inherit from one of these in order to allow
  26. # the user to specifically filter them.
  27. #
  28. class CryptoWarning(Warning):
  29. """Base class for PyCrypto warnings"""
  30. class CryptoDeprecationWarning(DeprecationWarning, CryptoWarning):
  31. """Base PyCrypto DeprecationWarning class"""
  32. class CryptoRuntimeWarning(RuntimeWarning, CryptoWarning):
  33. """Base PyCrypto RuntimeWarning class"""
  34. #
  35. # Warnings that we might actually use
  36. #
  37. class RandomPool_DeprecationWarning(CryptoDeprecationWarning):
  38. """Issued when Crypto.Util.randpool.RandomPool is instantiated."""
  39. class ClockRewindWarning(CryptoRuntimeWarning):
  40. """Warning for when the system clock moves backwards."""
  41. class GetRandomNumber_DeprecationWarning(CryptoDeprecationWarning):
  42. """Issued when Crypto.Util.number.getRandomNumber is invoked."""
  43. class PowmInsecureWarning(CryptoRuntimeWarning):
  44. """Warning for when _fastmath is built without mpz_powm_sec"""
  45. # By default, we want this warning to be shown every time we compensate for
  46. # clock rewinding.
  47. import warnings as _warnings
  48. _warnings.filterwarnings('always', category=ClockRewindWarning, append=1)
  49. # vim:set ts=4 sw=4 sts=4 expandtab: