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== python-yubico
Python package for talking to YubiKeys.
=== Introduction
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.
=== Example
Here is a trivial usage example :
[source, python]
----
#!/usr/bin/env python
""" Get version of connected YubiKey. """
import sys
import yubico
try:
yubikey = yubico.find_yubikey(debug=False)
print "Version : %s " % yubikey.version()
except yubico.yubico_exception.YubicoError as e:
print "ERROR: %s" % e.reason
sys.exit(1)
----
=== Installation
==== Using the Ubuntu/Debian package manager
If you use a recent Ubuntu release, you should be able to install python-yubico
with these commands :
$ sudo add-apt-repository ppa:yubico/stable
$ sudo apt-get update
$ sudo apt-get install python-yubico
The Launchpad PPA key generated for our packages is 32CBA1A9.
==== Using Pip
python-yubico is installable via pip:
$ pip install python-yubico
Or, directly from the source package in the standard Python way:
$ cd python-yubico-$ver
$ python setup.py install
This requires the `python-setuptools` package. You will also need
http://walac.github.io/pyusb[PyUSB], called python-usb in Debian/Ubuntu.
`pyusb` is available on PyPI and may be installed with pip: `pip install --pre
pyusb` The --pre command-line option indicates that pre-releases of `pyusb`
may also be searched (only pre-releases of `pyusb` are available on PyPI, and
pip skips pre-releases by default). Note that while both the 0.4 branch and the
1.0 branch are supported, the older 0.4 branch doesn't support re-attaching the
kernel device driver on close, which will leave the YubiKey in a state where it
is unable to output OTPs until it has been unplugged and plugged back in again.
==== On Windows
If you use Windows, you will require a PyUSB backend. Python-yubico has been
tested with http://libusbx.org[libusbx] and confirmed working, without the need
for replacing the device driver.
=== License
Copyright (c) Yubico AB.
Licensed under the BSD 2-clause license.
See the file COPYING for full licence statement.
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