/pycrypto/lib/Crypto/Cipher/__init__.py

http://github.com/tav/pylibs · Python · 51 lines · 20 code · 5 blank · 26 comment · 1 complexity · ba2eafc43fa37e93f7853206a68e1f94 MD5 · raw file 

    

  1. # -*- coding: utf-8 -*-
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  2. #
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  3. # ===================================================================
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  4. # The contents of this file are dedicated to the public domain.  To
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  5. # the extent that dedication to the public domain is not available,
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  6. # everyone is granted a worldwide, perpetual, royalty-free,
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  7. # non-exclusive license to exercise all rights associated with the
    8. 

  8. # contents of this file for any purpose whatsoever.
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  9. # No rights are reserved.
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  10. #
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  11. # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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  12. # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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  13. # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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  14. # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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  15. # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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  16. # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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  17. # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    18. 

  18. # SOFTWARE.
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  19. # ===================================================================
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  20. 

  21. """Secret-key encryption algorithms.
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    23. 

  23. Secret-key encryption algorithms transform plaintext in some way that
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  24. is dependent on a key, producing ciphertext. This transformation can
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  25. easily be reversed, if (and, hopefully, only if) one knows the key.
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  26. 

  27. The encryption modules here all support the interface described in PEP
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  28. 272, "API for Block Encryption Algorithms".
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  29. 

  30. If you don't know which algorithm to choose, use AES because it's
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  31. standard and has undergone a fair bit of examination.
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  32. 

  33. Crypto.Cipher.AES         Advanced Encryption Standard
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  34. Crypto.Cipher.ARC2        Alleged RC2
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  35. Crypto.Cipher.ARC4        Alleged RC4
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  36. Crypto.Cipher.Blowfish
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  37. Crypto.Cipher.CAST
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  38. Crypto.Cipher.DES         The Data Encryption Standard.  Very commonly used
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  39.                           in the past, but today its 56-bit keys are too small.
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  40. Crypto.Cipher.DES3        Triple DES.
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  41. Crypto.Cipher.XOR         The simple XOR cipher.
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  42. """
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    44. 

  44. __all__ = ['AES', 'ARC2', 'ARC4',
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  45.            'Blowfish', 'CAST', 'DES', 'DES3',
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  46.            'XOR'
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  47.            ]
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  48. 

  49. __revision__ = "$Id$"
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