aes.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
from Crypto.Cipher import AES
from binascii import b2a_hex, a2b_hex


class prpcrypt():
    def __init__(self, key, iv):
        self.key = key
        self.iv = iv
        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.iv)
        # 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)
        if (count % length != 0):
            add = length - (count % length)
        else:
            add = 0
        text = text + ('\0' * add)
        self.ciphertext = cryptor.encrypt(text)
        self.ciphertext = b2a_hex(self.ciphertext)
        return str(self.ciphertext, 'utf-8')

    def decrypt(self, text):
        cryptor = AES.new(self.key, self.mode, self.iv)
        plain_text = cryptor.decrypt(a2b_hex(text))
        plain_text = str(plain_text, 'utf-8')
        return plain_text.rstrip('\0')
        #return plain_text



pc = prpcrypt("This is SecretKey", 'This is an IV')  # 初始化密钥