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Python code for talking to Yubico's YubiKeys

Project description

== 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 2.2 (besides deprecated
functions in YubiKey 1.x).
See `examples/configure_nist_test_key` for an example.

2. Challenge-response. YubiKey 2.2 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

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

=== 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 install

This requires the `python-setuptools` package. You will also need[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[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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