CODEWITHSUNDEEP
pythonpython-cryptography
Brandon Gile
Brandon Gile

Reputation: 11

Crypto Error when Using Paramiko?

I haven't updated anything recently that I can think of that would have impacted nacl and the signing process for paramiko, but now it will not work. I have reinstalled paramiko, and netmiko and made sure all of the crypto libraries are up to date. I am at a loss what else to do, any thoughts?

from netmiko import ConnectHandler
...
def main(device_list):                                        
    username = input("\nWhat is your username? -> ")          
    password = getpass.getpass("\nWhat is your password? -> ")
    for host in device_list:                                  
        juniper_device = {                                    
        'device_type': 'juniper',                             
        'ip': host,                                           
        'username': username,                                 
        'password': password,                                 
        'verbose': False                                   
    }

Netmiko uses the Paramiko library to make SSH connections. This bit of code is what sets up the device definition.

Here is the stack trace associated with the creation of the device and the opening of an ssh connection.

Traceback (most recent call last):
  File "./get_running-config.py", line 5, in <module>
    from netmiko import ConnectHandler
  File "/usr/local/lib/python3.4/dist-packages/netmiko/__init__.py", line 8, in <module>
from netmiko.ssh_dispatcher import ConnectHandler
  File "/usr/local/lib/python3.4/dist-packages/netmiko/ssh_dispatcher.py", line 4, in <module>
from netmiko.a10 import A10SSH
  File "/usr/local/lib/python3.4/dist-packages/netmiko/a10/__init__.py", line 2, in <module>
from netmiko.a10.a10_ssh import A10SSH
  File "/usr/local/lib/python3.4/dist-packages/netmiko/a10/a10_ssh.py", line 4, in <module>
from netmiko.cisco_base_connection import CiscoSSHConnection
  File "/usr/local/lib/python3.4/dist-packages/netmiko/cisco_base_connection.py", line 3, in <module>
from netmiko.base_connection import BaseConnection
  File "/usr/local/lib/python3.4/dist-packages/netmiko/base_connection.py", line 13, in <module>
import paramiko
  File "/usr/local/lib/python3.4/dist-packages/paramiko/__init__.py", line 22, in <module>
from paramiko.transport import SecurityOptions, Transport
  File "/usr/local/lib/python3.4/dist-packages/paramiko/transport.py", line 57, in <module>
from paramiko.ed25519key import Ed25519Key
  File "/usr/local/lib/python3.4/dist-packages/paramiko/ed25519key.py", line 22, in <module>
import nacl.signing
  File "/usr/local/lib/python3.4/dist-packages/nacl/signing.py", line 19, in <module>
import nacl.bindings
  File "/usr/local/lib/python3.4/dist-packages/nacl/bindings/__init__.py", line 17, in <module>
from nacl.bindings.crypto_box import (
  File "/usr/local/lib/python3.4/dist-packages/nacl/bindings/crypto_box.py", line 27, in <module>
crypto_box_SEEDBYTES = lib.crypto_box_seedbytes()
AttributeError: cffi library '_sodium' has no function, constant or global variable named 'crypto_box_seedbytes'

Upvotes: 0

Views: 966

Answers (2)

Brandon Gile
Brandon Gile

Reputation: 11

After a lot of tinkering with the cryptography and subsequent modules, I just fresh installed all related libraries and things work now. Not really sure how it got in this state unfortunately but it was easier to just start over.

Upvotes: 1

serv-inc
serv-inc

Reputation: 38187

Unless you post the code, some guessing is needed:

Maybe the problem is similar to https://github.com/mitmproxy/mitmproxy/issues/2372, where it was solved by installing the cryptography package in version 1.9.

Upvotes: 0

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