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Name: keyring
Version: 0.9.2
Summary: Store and access your passwords safely.
Home-page: http://bitbucket.org/kang/python-keyring-lib
Author: Jason R. Coombs
Author-email: jaraco@jaraco.com
License: PSF
Description: =======================================
Installing and Using Python Keyring Lib
=======================================
.. contents:: **Table of Contents**
---------------------------
What is Python keyring lib?
---------------------------
The Python keyring lib provides a easy way to access the system keyring service
from python. It can be used in any application that needs safe password storage.
The keyring services supported by the Python keyring lib:
* **OSXKeychain**: supports the Keychain service in Mac OS X.
* **KDEKWallet**: supports the KDE's Kwallet service.
* **GnomeKeyring**: for Gnome 2 environment.
* **SecretServiceKeyring**: for newer GNOME and KDE environments.
Besides these native password storing services provided by operating systems.
Python keyring lib also provides following build-in keyrings.
* **Win32CryptoKeyring**: for Windows 2k+.
* **CryptedFileKeyring**: a command line interface keyring base on PyCrypto.
* **UncryptedFileKeyring**: a keyring which leaves passwords directly in file.
-------------------------
Installation Instructions
-------------------------
easy_install or pip
===================
Run easy_install or pip::
$ easy_install keyring
$ pip install keyring
Source installation
===================
Download the source tarball, and uncompress it, then run the install command::
$ wget http://pypi.python.org/packages/source/k/keyring/keyring-0.3.tar.gz
$ tar -xzvf keyring-0.3.tar.gz
$ cd keyring-0.3
$ python setup.py install
--------------------------
Configure your keyring lib
--------------------------
The python keyring lib contains implementations for several backends, including
**OSX Keychain**, **Gnome Keyring**, **KDE Kwallet** and etc. The lib will
automatically choose the keyring that is most suitable for your current
environment. You can also specify the keyring you like to be used in the config
file or by calling the ``set_keyring()`` function.
Customize your keyring by config file
=====================================
This section is about how to change your option in the config file.
Config file path
----------------
The configuration of the lib is stored in a file named "keyringrc.cfg". The file
can be stored in either of following two paths.
1. The working directory of the python
2. The home directory for current user
The lib will first look for the config file in the working directory. If no
config file exists **or** the config file cannot be written properly, keyring
will reference the config in the home directory.
Beginning with keyring 0.8, the config root is platform specific. To determine
where in the home directory the config file (and other data files) are stored,
run the following::
python -c "import keyring.util.platform; print(keyring.util.platform.data_root())"
Config file content
-------------------
To specify a keyring backend, you need tell the lib the module name of the
backend, such as ``keyring.backend.OSXKeychain``. If the backend is not shipped
with the lib, in another word, is made by you own, you need also tell the lib
the path of your own backend module. The module name should be written after the
**default-keyring** option, while the module path belongs the **keyring-path**
option.
Here's a sample config file(The full demo can be accessed in the ``demo/keyring.py``):
::
[backend]
default-keyring=simplekeyring.SimpleKeyring
keyring-path=/home/kang/pyworkspace/python-keyring-lib/demo/
Write your own keyring backend
==============================
The interface for the backend is defined by ``keyring.backend.KeyringBackend``.
By extending this base class and implementing the three functions
``supported()``, ``get_password()`` and ``set_password()``, you can easily create
your own backend for keyring lib.
The usage of the three functions:
* ``supported(self)`` : Return if this backend is supported in current
environment. The returned value can be **0**, **1** , or **-1**. **0** means
suitable; **1** means recommended and **-1** means this backend is not
available for current environment.
* ``get_password(self, service, username)`` : Return the stored password for the
``username`` of the ``service``.
* ``set_password(self, service, username, password)`` : Store the ``password``
for ``username`` of the ``service`` in the backend.
For an instance, there's the source code of the demo mentioned above. It's a
simple keyring which stores the password directly in memory.
::
"""
simplekeyring.py
A simple keyring class for the keyring_demo.py
Created by Kang Zhang on 2009-07-12
"""
from keyring.backend import KeyringBackend
class SimpleKeyring(KeyringBackend):
"""Simple Keyring is a keyring which can store only one
password in memory.
"""
def __init__(self):
self.password = ''
def supported(self):
return 0
def get_password(self, service, username):
return self.password
def set_password(self, service, username, password):
self.password = password
return 0
Set the keyring in runtime
==========================
Besides setting the backend through the config file, you can also set the
backend to use by calling the api ``set_keyring()``. The backend you passed in
will be used to store the password in your application.
Here's a code snippet from the ``keyringdemo.py``. It shows the usage of
``set_keyring()``
::
# define a new keyring class which extends the KeyringBackend
import keyring.backend
class TestKeyring(keyring.backend.KeyringBackend):
"""A test keyring which always outputs same password
"""
def supported(self): return 0
def set_password(self, servicename, username, password): return 0
def get_password(self, servicename, username):
return "password from TestKeyring"
# set the keyring for keyring lib
import keyring
keyring.set_keyring(TestKeyring())
# invoke the keyring lib
try:
keyring.set_password("demo-service", "tarek", "passexample")
print "password stored sucessfully"
except keyring.backend.PasswordError:
print "failed to store password"
print "password", keyring.get_password("demo-service", "tarek")
-----------------------------------------------
Integrate the keyring lib with your application
-----------------------------------------------
API interface
=============
The keyring lib has two functions:
* ``get_password(service, username)`` : Returns the password stored in keyring.
If the password does not exist, it will return None.
* ``set_password(service, username, password)`` : Store the password in the
keyring.
Example
=======
Here's an example of using keyring for application authorization. It can be
found in the demo folder of the repository. Note that the faked auth function
only returns true when the password equals to the username.
::
"""
auth_demo.py
Created by Kang Zhang 2009-08-14
"""
import keyring
import getpass
import ConfigParser
def auth(username, password):
"""A faked authorization function.
"""
return username == password
def main():
"""This scrip demos how to use keyring facilite the authorization. The
username is stored in a config named 'auth_demo.cfg'
"""
# config file init
config_file = 'auth_demo.cfg'
config = ConfigParser.SafeConfigParser({
'username':'',
})
config.read(config_file)
if not config.has_section('auth_demo_login'):
config.add_section('auth_demo_login')
username = config.get('auth_demo_login','username')
password = None
if username != '':
password = keyring.get_password('auth_demo_login', username)
if password == None or not auth(username, password):
while 1:
username = raw_input("Username:\n")
password = getpass.getpass("Password:\n")
if auth(username, password):
break
else:
print "Authorization failed."
# store the username
config.set('auth_demo_login', 'username', username)
config.write(open(config_file, 'w'))
# store the password
keyring.set_password('auth_demo_login', username, password)
# the stuff that needs authorization here
print "Authorization successful."
if __name__ == "__main__":
main()
------------
Get involved
------------
Python keyring lib is an open community project and highly welcomes new
contributors.
* Repository: http://bitbucket.org/kang/python-keyring-lib/
* Bug Tracker: http://bitbucket.org/kang/python-keyring-lib/issues/
* Mailing list: http://groups.google.com/group/python-keyring
Running Tests
=============
To run the tests, you'll want keyring installed to some environment in which
it can be tested. Two recommended techniques are described below.
Using virtualenv and pytest/nose/unittest2
------------------------------------------
Pytest and Nose are two popular test runners that will discover tests and run
them. Unittest2 (also known as simply unittest in Python 3) also has a mode
to discover tests.
First, however, these test runners typically need a test environment in which
to run. It is recommended that you install keyring to a virtual environment
to avoid interfering with your system environment. For more information, see
the `virtualenv homepage <http://www.virtualenv.org>`_.
After you've created (or designated) your environment, install keyring into
the environment by running::
python setup.py develop
Then, invoke your favorite test runner, e.g.::
py.test
or::
nosetests
Using buildout
--------------
The keyring repo bundles buildout's bootstrap script as a subrepo, so using
buildout is three easy steps::
1. python buildout/bootstrap # bootstrap the buildout.
2. bin/buildout # prepare the buildout.
3. bin/test # execute the test runner.
For more information about the options that the script provides do execute::
python bin/test --help
-------
Credits
-------
The project was based on Tarek Ziade's idea in `this post`_. Kang Zhang
initially carried it out as a `Google Summer of Code`_ project, and Tarek
mentored Kang on this project.
.. _this post: http://tarekziade.wordpress.com/2009/03/27/pycon-hallway-session-1-a-keyring-library-for-python/
.. _Google Summer of Code: http://socghop.appspot.com/
See CONTRIBUTORS.txt for a complete list of contributors.
=======
CHANGES
=======
-----
0.9.2
-----
* Keyring 0.9.1 introduced a whole different storage format for the
CryptedFileKeyring, but this introduced some potential compatibility issues.
This release incorporates the security updates but reverts to the INI file
format for storage, only encrypting the passwords and leaving the service
and usernames in plaintext. Subsequent releases may incorporate a new
keyring to implement a whole-file encrypted version. Fixes #64.
* The CryptedFileKeyring now requires simplejson for Python 2.5 clients.
-----
0.9.1
-----
* Fix for issue where SecretServiceBackend.set_password would raise a
UnicodeError on Python 3 or when a unicode password was provided on Python
2.
* CryptedFileKeyring now uses PBKDF2 to derive the key from the user's
password and a random hash. The IV is chosen randomly as well. All the
stored passwords are encrypted at once. Any keyrings using the old format
will be automatically converted to the new format (but will no longer be
compatible with 0.9 and earlier). The user's password is no longer limited
to 32 characters. PyCrypto 2.5 or greater is now required for this keyring.
---
0.9
---
* Add support for GTK 3 and secret service D-Bus. Fixes #52.
* Issue #60 - Use correct method for decoding.
-----
0.8.1
-----
* Fix regression in keyring lib on Windows XP where the LOCALAPPDATA
environment variable is not present.
---
0.8
---
* Mac OS X keyring backend now uses subprocess calls to the `security`
command instead of calling the API, which with the latest updates, no
longer allows Python to invoke from a virtualenv. Fixes issue #13.
* When using file-based storage, the keyring files are no longer stored
in the user's home directory, but are instead stored in platform-friendly
locations (`%localappdata%\Python Keyring` on Windows and according to
the freedesktop.org Base Dir Specification
(`$XDG_DATA_HOME/python_keyring` or `$HOME/.local/share/python_keyring`)
on other operating systems). This fixes #21.
*Backward Compatibility Notice*
Due to the new storage location for file-based keyrings, keyring 0.8
supports backward compatibility by automatically moving the password
files to the updated location. In general, users can upgrade to 0.8 and
continue to operate normally. Any applications that customize the storage
location or make assumptions about the storage location will need to take
this change into consideration. Additionally, after upgrading to 0.8,
it is not possible to downgrade to 0.7 without manually moving
configuration files. In 1.0, the backward compatibilty
will be removed.
-----
0.7.1
-----
* Removed non-ASCII characters from README and CHANGES docs (required by
distutils if we're to include them in the long_description). Fixes #55.
---
0.7
---
* Python 3 is now supported. All tests now pass under Python 3.2 on
Windows and Linux (although Linux backend support is limited). Fixes #28.
* Extension modules on Mac and Windows replaced by pure-Python ctypes
implementations. Thanks to Jerome Laheurte.
* WinVaultKeyring now supports multiple passwords for the same service. Fixes
#47.
* Most of the tests don't require user interaction anymore.
* Entries stored in Gnome Keyring appears now with a meaningful name if you try
to browser your keyring (for ex. with Seahorse)
* Tests from Gnome Keyring no longer pollute the user own keyring.
* `keyring.util.escape` now accepts only unicode strings. Don't try to encode
strings passed to it.
-----
0.6.2
-----
* fix compiling on OSX with XCode 4.0
-----
0.6.1
-----
* Gnome keyring should not be used if there is no DISPLAY or if the dbus is
not around (https://bugs.launchpad.net/launchpadlib/+bug/752282).
---
0.6
---
* Added `keyring.http` for facilitating HTTP Auth using keyring.
* Add a utility to access the keyring from the command line.
-----
0.5.1
-----
* Remove a spurious KDE debug message when using KWallet
* Fix a bug that caused an exception if the user canceled the KWallet dialog
(https://bitbucket.org/kang/python-keyring-lib/issue/37/user-canceling-of-kde-wallet-dialogs).
---
0.5
---
* Now using the existing Gnome and KDE python libs instead of custom C++
code.
* Using the getpass module instead of custom code
---
0.4
---
* Fixed the setup script (some subdirs were not included in the release.)
---
0.3
---
* Fixed keyring.core when the user doesn't have a cfg, or is not
properly configured.
* Fixed escaping issues for usernames with non-ascii characters
---
0.2
---
* Add support for Python 2.4+
http://bitbucket.org/kang/python-keyring-lib/issue/2
* Fix the bug in KDE Kwallet extension compiling
http://bitbucket.org/kang/python-keyring-lib/issue/3
Keywords: keyring Keychain GnomeKeyring Kwallet password storage
Platform: Many
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python :: 2.4
Classifier: Programming Language :: Python :: 2.5
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
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