目录
前言
搞微信小程序的登录，后端要解密一下这个。参考这篇文章
安装 Crypto 库
pip install pycryptodome
如果安装反应速度太慢，可以用这种方法临时换源：
pip install pycryptodome -i http://mirrors.aliyun.com/pypi/simple --trusted-host mirrors.aliyun.com
测试代码
#coding=utf8
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad,unpad
import base64
import hashlib
class PrpCrypt(object):
def __init__(self, key):
self.key = key
self.mode = AES.MODE_CBC
self.iv = ""
def md5sum(self,tmp):
m = hashlib.md5()
m.update(tmp.encode("utf8"))
return m.hexdigest()
def setKEYandIV(self):
tmp = self.md5sum(self.key)
self.iv = tmp[0:16].encode("utf8")
self.key = self.key.encode("utf8")
def encrypt(self, text):
data = pad(text.encode('utf8'),16)
cipher = AES.new(self.key, self.mode, self.iv)
encryptedbytes = cipher.encrypt(data)
encodestrs = base64.b64encode(encryptedbytes)
enctext = encodestrs.decode('utf8')
return enctext
def decrypt(self, text):
cryptor = AES.new(self.key, self.mode, self.iv)
encodebytes = base64.decodebytes(text)
#需要注意进行base64解码字符串
plain_text = cryptor.decrypt(encodebytes)
plain_text = unpad(plain_text,16)
return plain_text.decode("utf8")
tmp = b'xxxxxxxxxxxxxxxxx' #自己加密完的数据
key = "xxxxx" #自己定义
obj = PrpCrypt(key)
obj.setKEYandIV()
tmp2 = obj.decrypt(tmp)
print(tmp2)
obj2 = PrpCrypt(key)
obj2.setKEYandIV()
tmp3 = obj2.encrypt(tmp2)
print(tmp3)