About errors of _util.py and crypto.py of pyOpenSSL

[GioZhu]

Just picked up pyOpenSSL coding, and the same error cannot be debugged. It's just the most basical implementation of loading private key and signing something. Here's my code:

from OpenSSL.crypto import load_privatekey, FILETYPE_PEM, sign
import base64
key = load_privatekey(FILETYPE_PEM, open("C:\Users\Gio\SSL\gioCA\newcerts\01.pem").read())
content = "test_message"
d = sign(key, content, 'sha1')
b = base64.b64encode(d)
print(b)

And the errors are as below:
Traceback (most recent call last):
File "F:\workspace\myFirst\encrytion.py", line 5, in
key = load_privatekey(FILETYPE_PEM, open("C:\Users\Gio\SSL\gioCA\newcerts\01.pem").read())
File "C:\Python33\lib\site-packages\pyOpenSSL-0.14-py3.3.egg\OpenSSL\crypto.py", line 2010, in load_privatekey
File "C:\Python33\lib\site-packages\pyOpenSSL-0.14-py3.3.egg\OpenSSL_util.py", line 22, in exception_from_error_queue
OpenSSL.crypto.Error: []

Can anyone solve this problem?

[exarkun]

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