CODEWITHSUNDEEP
pythonpkcs#11keyerror
Laura Insua Regueiro
Laura Insua Regueiro

Reputation: 33

Module pkcs#11 from Python

I'm trying to use pkcs11 from Python and I have a problem. I had view many examples and all of them start with the same code. However, when I execute it, console raises error in the third line of the code.

Code: 

import pkcs11
import os
# Initialise our PKCS#11 library
lib = pkcs11.lib(os.environ['PKCS11_MODULE'])
token = lib.get_token(token_label='DEMO')

Error in the line: 

lib = pkcs11.lib(os.environ['PKCS11_MODULE'])

Error:

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/UserDict.py", line 40, in __getitem__
raise KeyError(key)
KeyError: 'PKCS11_MODULE'

Upvotes: 0

Views: 2763

Answers (2)

Santiago H
Santiago H

Reputation: 81

to solve this you have to add the route of your driver (in windows a file .dll in linux a file .so), like this: 

import pkcs11


lib = pkcs11.lib("C:/Windows/System32/eps2003csp11.dll")

for slot in lib.get_slots():
    token = slot.get_token()
    print(token)

    if token.label == '...':
        break

In my case, i work with usb token. With this the result is the username of the token connected.

Upvotes: 0

Mihai Andrei
Mihai Andrei

Reputation: 1034

pkcs11 wraps a native library. It expects to find that library in a path given by the PKCS11_MODULE environment variable.

You should set that environment variable to where you have installed the native component.

$ export PKCS11_MODULE='/some/path'
$ python myscript.py

Upvotes: 2

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