Python使用PyCrypto实现AES加密功能示例_Python

Python使用PyCrypto实现AES加密功能示例

2020-11-11 00:28pythopen Python

这篇文章主要介绍了Python使用PyCrypto实现AES加密功能,结合具体实例形式分析了PyCrypto实现AES加密的操作步骤与相关实现技巧,需要的朋友可以参考下

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