使用 js CryptoJS 加密并使用 python crypto.Cipher 解密时遇到问题
这是我在 js 中的实现,用加密消息附加 iv 并用 base64 编码
<script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/aes.js"></script>
<script>
var message='Secreat Message to Encrypt';
var key = CryptoJS.enc.Hex.parse('824601be6c2941fabe7fe256d4d5a2b7');
var iv = CryptoJS.enc.Hex.parse('1011121314151617');
var encrypted = CryptoJS.AES.encrypt(message, key, { iv: iv, mode: CryptoJS.mode.CBC });
encrypted =encrypted.toString();
encrypted = iv+encrypted;
encrypted = btoa(encrypted);
console.log('encrypted',encrypted );
alert(encrypted);
// var decrypted = CryptoJS.AES.decrypt(encrypted, key, { iv: iv, mode: CryptoJS.mode.CBC });
// console.log('decrypted', decrypted);
//alert(decrypted.toString(CryptoJS.enc.Utf8));
</script>
在用于 aes 加密和解密的 python 脚本中,我使用了
#!/usr/bin/python
import os, random, struct
from Crypto.Cipher import AES
from Crypto import Random
import base64
class AESCipher:
def __init__(self, key):
BS = 16
self.pad = lambda s: s + (BS - len(s) % BS) * chr(BS - len(s) % BS)
self.unpad = lambda s : s[0:-ord(s[-1])]
self.key = self.pad(key[0:16])
def encrypt(self, raw):
raw = self.pad(raw)
iv = "1011121314151617"
cipher = AES.new(self.key, AES.MODE_CBC, iv)
return base64.b64encode(iv + cipher.encrypt(raw))
def decrypt(self, enc):
enc = enc.replace(' ', '+')
enc = base64.b64decode(enc)
iv = enc[:16]
cipher = AES.new(self.key, AES.MODE_CBC, iv)
return self.unpad(cipher.decrypt( enc[16:]))
def main():
cipher = AESCipher('824601be6c2941fabe7fe256d4d5a2b7')
encrypteddata =cipher.encrypt(''Secreat Message to Encrypt'')
print encrypteddata
decryptdata =cipher.decrypt(encrypteddata)
print decryptdata
main()
但是相同的iv,消息和密钥在python和js中产生不同的加密消息,
JavaScript与python解密兼容有什么问题?
两者都使用了 AES.MODE_CBC 并假设都使用了 Pkcs7 填充。现在硬编码的iv是随机生成的