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[英]ImportError: No module named _ssl occurring even when /usr/lib64/python2.7/lib-dynload/_ssl.so is available fc18
[英]python + script failed regarding to cryptography under /usr/lib64/python2.7
我创建以下 python 脚本
这个 python 脚本将读取文件/lpp/airflow/.sec/rmq_pass
到 var - pass_hash
并将其解密为decrypted_pass
more security_test.py
import sys
import os
import base64
from cryptography.fernet import Fernet
key_file = "/lpp/airflow/.sec/key"
rmq_pass_file = "/lpp/airflow/.sec/rmq_pass"
key = open(key_file, 'r')
f = Fernet(key.read())
pass_hash = open(rmq_pass_file, 'r')
#decrypting the password from "pass_file" file using the key from the "key_file".
decrypted_pass = f.decrypt(pass_hash.read())
ConnStr = "amqp://airflow:" + decrypted_pass + "@localhost:5672//"
当我运行脚本时,它在 /usr/lib64/python2.7/site-packages/cryptography/fernet.py 或/usr/lib64/python2.7/site-packages/cryptography
下的任何地方都失败了
我们尝试重新安装 package 加密,但这没有帮助
和想法可能是什么?
python security_test.py
Traceback (most recent call last):
File "security_test.py", line 14, in <module>
decrypted_pass = f.decrypt(pass_hash.read())
File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 75, in decrypt
return self._decrypt_data(data, timestamp, ttl)
File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 117, in _decrypt_data
self._verify_signature(data)
File "/usr/lib64/python2.7/site-packages/cryptography/fernet.py", line 101, in _verify_signature
h = HMAC(self._signing_key, hashes.SHA256(), backend=self._backend)
File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/primitives/hmac.py", line 31, in __init__
self._ctx = self._backend.create_hmac_ctx(key, self.algorithm)
File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/backend.py", line 207, in create_hmac_ctx
return _HMACContext(self, key, algorithm)
File "/usr/lib64/python2.7/site-packages/cryptography/hazmat/backends/openssl/hmac.py", line 34, in __init__
key_ptr = self._backend._ffi.from_buffer(key)
TypeError: from_buffer() cannot return the address of the raw string within a str or unicode or bytearray object
重要提示 - 在其他机器上这个脚本工作正常
解决它的最佳方法是什么? 通过删除所有模块并重新安装它们? 或通过重新安装 python?
如果这是由pip
安装的,则此问题是由于cffi
package 过时(我能够通过在virtualenv
中强制安装cffi
1.5 来重现此问题)。 较新版本的cryptography
需要cffi >= 1.8
,但pip
并不总是能正确解决这个问题(取决于各种其他场景)。 您可以pip install -U cffi
看看是否可以解决它,但通常您应该强烈考虑在virtualenv
内运行 Python 代码,而不是将包安装到全局 ZEFE90A8E604A7C840E88D03AZ87 空间中。 操作系统 package 管理器假定它拥有全局包,如果您将分发包与pip
安装混合和匹配,您可能会导致安装出现许多问题。
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