在加密js和pycrypto与AES问题 [英] Problems with AES in crypto-js and pycrypto

问题描述

我尝试实施

• 加密JS （一个javascript加密库）

• crypto-js (a javascript crypto library)

和 pycrypto （一个Python加密库）

and pycrypto (a python crypto library)

在蟒蛇服务器端的我加密与 IV 和密码并用密文的base64发送IV EN coded到的 JavaScript客户端的。然后我想解密字符串的密码，用户可以进入。

On the python server side I encrypt a string with an iv and a passphrase and send the iv with the encrypted text base64 encoded to the javascript client side. Then I want to decrypt the string with the passphrase the user can enter.

蟒蛇 - 服务器

from Crypto.Cipher import AES
from Crypto import Random

iv = Random.get_random_bytes(16)
key = "1234567812345678"
aes = AES.new(key, AES.MODE_CFB, iv)
encrypted_text = base64.b64encode(aes.encrypt("this is a test.."))
iv = base64.b64encode(iv)
# send iv, encrypted_text to client

JavaScript的 - 客户端

// <script type="text/javascript" 
        src="http://crypto-js.googlecode.com/files/2.5.3-crypto-sha1-hmac-pbkdf2-blockmodes-aes.js">
   </script>
// text, and iv is base64encoded from the python script
// key is a string from an <input type='text'>
decrypted = Crypto.AES.decrypt(text, key, {iv: iv, mode: new Crypto.mode.CFB});

通过这个例子，我得到一个JavaScript错误

With this example I get a javascript error

Uncaught URIError: URI malformed

但是，这仅仅是一个例子 - 我试过的base64编码/我能想到的解码的每一个星座。我也试图改变模式。但这些都是随机的测试，我想了解我真正要做的。

But this is just one example - I tried every constellation of base64 encodings/decodings I could think of. I also tried to changed the Mode. But these are all random tests and I want to understand what I really have to do.

• 不隐窝-JS想要什么编码？


• 我应该选择哪种模式？


• 有什么我应该蟒蛇服务器端更改？


• 是什么样的填充？难道还有错？


• 任何其他JavaScript库可以推荐？

非常感谢你，善良的reagards，
samuirai

thank you very much and kind reagards, samuirai

推荐答案

您之前带code为Base64您必须总结IV和encrypted_text：

Before You encode to base64 You must sum iv and encrypted_text:

encrypted_text = base64.b64encode(iv + aes.encrypt("this is a test.."))

从官方文档（https://www.dlitz.net/software/pycrypto/doc/）：

From the official documentation (https://www.dlitz.net/software/pycrypto/doc/) :

作为一个例子，加密可以做如下：

As an example, encryption can be done as follows:

from Crypto.Cipher import AES
from Crypto import Random

key = b'Sixteen byte key'
iv = Random.new().read(AES.block_size)
cipher = AES.new(key, AES.MODE_CFB, iv)
msg = iv + cipher.encrypt(b'Attack at dawn')

这篇关于在加密js和pycrypto与AES问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！