【Python】Python AES 对称加密示例

代码：

import sys
from Crypto.Cipher import AES
from binascii import b2a_hex, a2b_hex
AES_SECRET_KEY = '此处16|24|32个字符'

class AES_ENCRYPT(object):
    def __init__(self):
        self.key = AES_SECRET_KEY
        self.mode = AES.MODE_CBC
     
    #加密函数，如果text不是16的倍数【加密文本text必须为16的倍数！】，那就补足为16的倍数
    def encrypt(self, text):
        #cryptor = AES.new(self.key, self.mode, self.key)
        cryptor = AES.new(self.key, self.mode)
        #这里密钥key 长度必须为16（AES-128）、24（AES-192）、或32（AES-256）Bytes 长度.目前AES-128足够用
        length = 16
        count = len(text)
        add = length - (count % length)
        text = text + ('\0' * add)
        self.ciphertext = cryptor.encrypt(text)
        #因为AES加密时候得到的字符串不一定是ascii字符集的，输出到终端或者保存时候可能存在问题
        #所以这里统一把加密后的字符串转化为16进制字符串
        return b2a_hex(self.ciphertext)
     
    #解密后，去掉补足的空格用strip() 去掉
    def decrypt(self, text):
        #cryptor = AES.new(self.key, self.mode, self.key)
        cryptor = AES.new(self.key, self.mode)
        plain_text = cryptor.decrypt(a2b_hex(text))
        return plain_text.rstrip('\0')
 
if __name__ == '__main__':
    aes_encrypt = AES_ENCRYPT()      #初始化密钥
    customer_id = "3f500ac5-020d-3ce3-a2a2-51a59ddd606e"
    e = aes_encrypt.encrypt(customer_id)
    d = aes_encrypt.decrypt(e)
    print customer_id
    print e
    print d

 

参考资料：

http://www.cnblogs.com/lovebread/archive/2010/11/09/1872747.html

https://my.oschina.net/kjpioo/blog/149293

http://blog.csdn.net/b_h_l/article/details/9454465

http://www.cnblogs.com/kaituorensheng/p/4501128.html

https://my.oschina.net/kuaikuai/blog/208075

http://www.jb51.net/article/56750.htm

http://www.cnblogs.com/happyhippy/archive/2006/12/23/601353.html

 

http://stackoverflow.com/questions/12524994/encrypt-decrypt-using-pycrypto-aes-256