Python使用PyCrypto实现AES加密功能示例

本文实例讲述了Python使用PyCrypto实现AES加密功能。分享给大家供大家参考，具体如下：

    #!/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

PS：关于加密解密感兴趣的朋友还可以参考本站在线工具：

文字在线加密解密工具（包含AES、DES、RC4等）：
http://tools.jb51.net/password/txt_encode

MD5在线加密工具:
http://tools.jb51.net/password/CreateMD5Password

在线散列/哈希算法加密工具:
http://tools.jb51.net/password/hash_encrypt

在线MD5/hash/SHA-1/SHA-2/SHA-256/SHA-512/SHA-3/RIPEMD-160加密工具：
http://tools.jb51.net/password/hash_md5_sha

在线sha1/sha224/sha256/sha384/sha512加密工具：
http://tools.jb51.net/password/sha_encode

更多关于Python相关内容感兴趣的读者可查看本站专题：《Python编码操作技巧总结》、《Python数据结构与算法教程》、《Python Socket编程技巧总结》、《Python函数使用技巧总结》、《Python字符串操作技巧汇总》、《Python入门与进阶经典教程》及《Python文件与目录操作技巧汇总》

希望本文所述对大家Python程序设计有所帮助。