使用PyCrypto做AES加密

概述使用PyCrypto做AES加密

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#!/usr/bin/env pythonfrom Crypto.Cipher import AESimport base64import os# the block size for the cipher object; must be 16,24,or 32 for AESBLOCK_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_SIZEpadding = '{'# one-liner to sufficIEntly pad the text to be encryptedpad = 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 base64EncodeAES = lambda c,s: base64.b64encode(c.encrypt(pad(s)))DecodeAES = lambda c,e: c.decrypt(base64.b64decode(e)).rstrip(padding)# generate a random secret keysecret = os.urandom(BLOCK_SIZE)# create a cipher object using the random secretcipher = AES.new(secret)# encode a stringencoded = EncodeAES(cipher,'password')print 'Encrypted string:',encoded# decode the encoded stringdecoded = DecodeAES(cipher,encoded)print 'Decrypted string:',decoded

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