pycrypto加解密

下载pycrypto:http://www.voidspace.org.uk/python/modules.shtml#pycrypto (Windows版本)

from Crypto.Cipher import AES
from binascii import b2a_hex, a2b_hex
 
class prpcrypt():
    def __init__(self, key):
        self.key = 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)
        #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)
        plain_text = cryptor.decrypt(a2b_hex(text))
        return plain_text.rstrip('\0')
 

pc = prpcrypt('keyskeyskeyskeys')      #初始化密钥

pp='eAedf.@3lzdsCX'
e = pc.encrypt(pp)
d = pc.decrypt(e)                  
print pp, d ,pp==d #返回 eAedf.@3lzdsCX eAedf.@3lzdsCX True

 

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

 

posted on 2016-08-04 15:48  momingliu11  阅读(483)  评论(0编辑  收藏  举报