对象类型 <class 'str'> 无法传递给 C 代码 - 虚拟环境

Question

我正在使用 Mac Anaconda。我尝试使用加密的 AES。但是，我遇到了一个奇怪的问题。

我只想执行一行简单的代码：

 obj = AES.new('This is a key123', AES.MODE_CBC, 'This is an IV456')

如果我在没有虚拟环境的情况下运行代码，如下所示。

$ python

Python 3.6.4 |Anaconda, Inc.| (default, Jan 16 2018, 12:04:33) 
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more 
information.
>>> from Crypto.Cipher import AES

>>> obj = AES.new('This is a key123', AES.MODE_CBC, 'This is an IV456')

如果我使用虚拟环境“testaes”运行，则会出现错误：

(testaes)$ python
Python 3.6.4 |Anaconda, Inc.| (default, Mar 12 2018, 20:05:31) 
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from Crypto.Cipher import AES

>>> obj = AES.new('This is a key123', AES.MODE_CBC, 'This is an IV456')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Applications/anaconda3/envs/testaes/lib/python3.6/site-packages/Crypto/Cipher/AES.py", line 200, in new
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
File "/Applications/anaconda3/envs/testaes/lib/python3.6/site-packages/Crypto/Cipher/__init__.py", line 55, in _create_cipher
return modes[mode](factory, **kwargs)
File "/Applications/anaconda3/envs/testaes/lib/python3.6/site-packages/Crypto/Cipher/_mode_cbc.py", line 234, in _create_cbc_cipher
cipher_state = factory._create_base_cipher(kwargs)
File "/Applications/anaconda3/envs/testaes/lib/python3.6/site-packages/Crypto/Cipher/AES.py", line 100, in _create_base_cipher
result = start_operation(c_uint8_ptr(key),
File "/Applications/anaconda3/envs/testaes/lib/python3.6/site-packages/Crypto/Util/_raw_api.py", line 109, in c_uint8_ptr
raise TypeError("Object type %s cannot be passed to C code" % type(data))
TypeError: Object type <class 'str'> cannot be passed to C code

您可以看到，我两次都使用相同的 Anaconda Python 3.6.4 和 GCC4.2.1。如何解决？

Answer 1

在 Python 3 中，将其编码为 bytearray:

obj = AES.new('This is a key123'.encode("utf8"), AES.MODE_CBC, 'This is an IV456'.encode("utf8"))

如果您将这些存储在变量中并想再次将它们用作（Python）字符串，只需使用：

key_as_bytearray.decode("utf8")

查看this answer了解更多信息。

Answer 2

Python 有一个名为 pycryptodome 的包会导致此错误。只需卸载该包

sudo pip3 卸载 pycryptodome