Python package for managing Yubico OTP slots on YubiKeys.

This project is no longer maintained. Please refer to for a more fully-featured and supported Python library for interacting with YubiKeys.


The YubiKey is a hardware token for authentication. The main mode of the YubiKey is entering a one time password (or a strong static password) by acting as a USB HID device, but there are things one can do with bi-directional communication:

  1. Configuration. The yubikey_config class should be a feature-wise complete implementation of everything that can be configured on YubiKeys version 1.3 to 3.x (besides deprecated functions in YubiKey 1.x). See examples/configure_nist_test_key for an example.

  2. Challenge-response. YubiKey 2.2 and later supports HMAC-SHA1 or Yubico challenge-response operations. See examples/nist_challenge_response for an example.

This library makes it easy to use these two features.


Here is a trivial usage example :

#!/usr/bin/env python
""" Get version of connected YubiKey. """

import sys
import yubico

    yubikey = yubico.find_yubikey(debug=False)
    print("Version: {}".format(yubikey.version()))
except yubico.yubico_exception.YubicoError as e:
    print("ERROR: {}".format(e.reason))


Using the Ubuntu/Debian package manager

If you use a recent Ubuntu release, you should be able to install python-yubico using apt-get:

sudo apt-get install python3-yubico

Using Pip

python-yubico is installable via pip:

pip install python-yubico

Using Setup

Or, directly from the source package in the standard Python way:

cd python-yubico-$ver
python install

This requires the python-setuptools package.


Copyright (c) Yubico AB. Licensed under the BSD 2-clause license. See the file COPYING for full licence statement.