[英]PyCryptoDome Version 3.6.6 raises an TypeError: Object type <class 'str'> cannot be passed to C code
几年前,我使用PyCryptoDome版本2.6.1在python中创建了一个密码模块。
现在,使用新的PyCryptoDome版本3.6.6和Python 3.6,我得到了具有相同代码的TypeError。 在“ _init_crypter”中抛出错误-方法:
File "/usr/local/lib/python3.6/dist-packages/Crypto/Cipher/AES.py", line 206, in new
return _create_cipher(sys.modules[__name__], key, mode, *args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/Crypto/Cipher/__init__.py", line 79, in _create_cipher
return modes[mode](factory, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/Crypto/Cipher/_mode_cbc.py", line 253, in _create_cbc_cipher
return CbcMode(cipher_state, iv)
File "/usr/local/lib/python3.6/dist-packages/Crypto/Cipher/_mode_cbc.py", line 96, in __init__
c_uint8_ptr(iv),
File "/usr/local/lib/python3.6/dist-packages/Crypto/Util/_raw_api.py", line 196, 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
我怎样才能解决这个问题!
两个版本的我的代码:
import os
from base64 import b64encode, b64decode
import hashlib
from Crypto.Cipher import Blowfish, AES
class Crypt:
fileextension = ".enc"
def __init__(self, crypter, key="", encoding="utf-8"):
self._mode = -1
self._encoding = encoding
self._crypter = Blowfish
self._blocksize = 8
self._key_32byte = ""
self._cryptographer = None
self.set_crypter(crypter)
if key:
self.set_key(key)
def _init_crypter(self):
# self._key_32byte <- set in set_key-method
# self._mode = AES.MODE_CBC <- set in set_crypter-method
# self._blocksize = 16 <- set in set_crypter-method
self._cryptographer = self._crypter.new(
self._key_32byte,
self._mode,
IV=self._blocksize * '\x00'
)
# and further code ...
key和IV
参数必须是二进制类型( bytes
),而不是文本类型( str
)。
如果要从文件加载密钥,请确保以二进制模式打开它:
with open('keyfile', 'rb') as f:
...
如果您的密钥是代码中的文字,请确保它是二进制文字:
key = b'badbadbadkey'
最后,要构造您的IV
参数,它必须是一个bytes
序列。
例如:
>>> Blowfish.new(b'badbadbadkey', 2, IV=8 * b'\x00')
<Crypto.Cipher._mode_cbc.CbcMode object at 0x7f434187b8d0>
好吧-几个小时后我明白了! 只有一个字母可以解决问题:'\\ x00'必须为b '\\ x00':
def _init_crypter(self):
self._cryptographer = self._crypter.new(
self._key_32byte,
self._mode,
IV=self._blocksize * b'\x00'
)
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