#!/usr/bin/env python    from Crypto.Cipher import AES  import base64  import os    # the block size for the cipher object; must be 16, 24, or 32 for AES  BLOCK_SIZE = 32    # the character used for padding--with a block cipher such as AES, the value  # you encrypt must be a multiple of BLOCK_SIZE in length.  This character is  # used to ensure that your value is always a multiple of BLOCK_SIZE  PADDING = '{'    # one-liner to sufficiently pad the text to be encrypted  pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * PADDING    # one-liners to encrypt/encode and decrypt/decode a string  # encrypt with AES, encode with base64  EncodeAES = lambda c, s: base64.b64encode(c.encrypt(pad(s)))  DecodeAES = lambda c, e: c.decrypt(base64.b64decode(e)).rstrip(PADDING)    # generate a random secret key  secret = os.urandom(BLOCK_SIZE)    # create a cipher object using the random secret  cipher = AES.new(secret)    # encode a string  encoded = EncodeAES(cipher, 'password')  print 'Encrypted string:', encoded    # decode the encoded string  decoded = DecodeAES(cipher, encoded)  print 'Decrypted string:', decoded