python - python中的Rijndael加密

Question

我想在 python 中使用带 key 和 block 大小为 256 位的 Rijndael 加密，填充应该是 PKCS7。要么用utf-8编码。我搜索了很多，最后写了这段代码，我不知道这是一个好方法，但我只知道这些。运行代码时出现此错误:

Traceback (most recent call last):
File "testForRijndael.py", line 1, in <module>
  from rijndael.cipher import crypt
File "/opt/odoo/odoo11-venv/lib/python3.6/site- 
  packages/rijndael/cipher/crypt.py", line 1, in <module>
  from rijndael.cipher.blockcipher import *
File "/opt/odoo/odoo11-venv/lib/python3.6/site- 
  packages/rijndael/cipher/blockcipher.py", line 64
    raise Exception,"the IV length should be %i bytes"%self.blocksize
               ^
SyntaxError: invalid syntax

如果有人能帮助我，我会很感激他/她

这是我的代码:

from rijndael.cipher import crypt
from rijndael.cipher.blockcipher import MODE_CBC
from pkcs7 import PKCS7Encoder


class Rijndael():
    def __init__(self, key, iv):
       self.KEY = key
       self.IV = iv
       self.BLOCKSIZE = 32

   def encrypt(self, plain_text):
        rjn = crypt.new(self.KEY, MODE_CBC , self.IV, 
blocksize=self.BLOCKSIZE)
        pad_text = PKCS7Encoder.encode(plain_text)
        return rjn.encrypt(pad_text).encode()

   def decrypt(self, cipher_text):
       rjn = crypt.new(self.KEY, MODE_CBC , self.IV, 
                       blocksize=self.BLOCKSIZE)
       cipher_text = cipher_text.decode()
       return rjn.decrypt(cipher_text)


  r = Rijndael('abcdefghijklmnopqrstuvwxyz123456', 
  'abcdefghijklmnopqrstuvwxyzgh3456')
  test_text = "this is a test :)"
  encrypt = r.encrypt(test_text)
  decrypt = r.decrypt(encrypt)
  print(test_text)
  print(encrypt)
  print(decrypt)

Answer 1

您从中导入的 rijndael 库是为 python 2 编写的，但您正在使用 python 3 运行它。请参阅下面的适用于 python 2 但不适用于 python 3 的语法。

$ cat raise.py
  raise Exception,"text"
$ python2 raise.py
Traceback (most recent call last):
  File "raise.py", line 1, in <module>
    raise Exception,"text"
Exception: text
$ python3 raise.py
  File "raise.py", line 1
    raise Exception,"text"
                   ^
SyntaxError: invalid syntax

你可以尝试自己迁移，使用2to3工具，看看有没有人写了端口，或者用python 2编写并执行你的程序。

尝试 pip2 install rijndael 然后 python2 testForRijndael.py。

要在本地代码上运行 2to3(不推荐但它可能有效)，运行 2to3 -w/opt/odoo/odoo11-venv/lib/python3.6/site -packages/rijndael/**/*.py