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- #!/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 = "HUISA78sa9y&9syYSsJhsjkdjklfs9aR"
- # create a cipher object using the random secret
- cipher = AES.new(secret)
- # encode a string
- encoded = EncodeAES(cipher, 'manh')
- print 'Encrypted string:', encoded
- # decode the encoded string
- decoded = DecodeAES(cipher, encoded)
- print 'Decrypted string:', decoded
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