pyDES 是一个Python的模块，用来提供 DES、Triple-DES 的加密算法。

使用示例：

from pyDes import *    # For Python3, you'll need to use bytes, i.e.:  #   data = b"Please encrypt my data"  #   k = des(b"DESCRYPT", CBC, b"\0\0\0\0\0\0\0\0", pad=None, padmode=PAD_PKCS5)    data = "Please encrypt my data"  k = des("DESCRYPT", CBC, "\0\0\0\0\0\0\0\0", pad=None, padmode=PAD_PKCS5)  d = k.encrypt(data)  print "Encrypted: %r" % d  print "Decrypted: %r" % k.decrypt(d)  assert k.decrypt(d, padmode=PAD_PKCS5) == data