使用AES算法,对用户输入的密码进行加解密.

password.py

#coding=utf-8
# Created with PyCharm.
# Author: liyinhui
# Date: 13-5-31
# Time: 下午1:49
# 基于PyCrypto库实现
import base64
from Crypto.Cipher import AES

iv = "fedcba9876543210"


def transform_key(user):
    keys = [x for x in "rzrk.keyrzrk.key"]
    length = len(keys) if len(keys) < len(user) else len(user)
    for i in range(length):
        keys[i] = chr(ord(keys[i]) + ord(user[i]))
    key = "".join(keys)
    return key


def encrypt(user, password):
    """
    对用户密码进行加密
    :param user: 用户名称
    :param password: 密码
    """
    key = transform_key(user)
    pAesCipher = AES.AESCipher(key, AES.MODE_CBC, iv)
    encrypt_value = pAesCipher.encrypt("%16s" % password)
    if len(encrypt_value) != len("%16s" % password):
        return password
    result = base64.urlsafe_b64encode(encrypt_value)
    print result
    return result


def decrypt(user, password):
    """
    对用户的密码进行解密, 先解码, 再用AES解密
    :param user: 用户名称
    :param password: base64编码的用户密码
    """
    encrypt_value = base64.urlsafe_b64decode(password)
    key = transform_key(user)
    pAesCipher = AES.AESCipher(key, AES.MODE_CBC, iv)
    decrypt_value = pAesCipher.decrypt("%16s" % encrypt_value)
    print decrypt_value.strip()

if __name__ == "__main__":
    user = "00131aaaa"
    password = "123456"

    encode_pwd = encrypt(user, password)
    decrypt(user, encode_pwd)