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Cryptography
============
.. image:: https://img.shields.io/pypi/v/cryptography.svg
:target: https://pypi.python.org/pypi/cryptography/
:alt: Latest Version
.. image:: https://readthedocs.org/projects/cryptography/badge/?version=latest
:target: https://cryptography.io
:alt: Latest Docs
.. image:: https://travis-ci.org/pyca/cryptography.svg?branch=master
:target: https://travis-ci.org/pyca/cryptography
.. image:: https://img.shields.io/coveralls/pyca/cryptography/master.svg
:target: https://coveralls.io/r/pyca/cryptography?branch=master
``cryptography`` is a package which provides cryptographic recipes and
primitives to Python developers. Our goal is for it to be your "cryptographic
standard library". It supports Python 2.6-2.7, Python 3.3+, and PyPy.
``cryptography`` includes both high level recipes, and low level interfaces to
common cryptographic algorithms such as symmetric ciphers, message digests and
key derivation functions. For example, to encrypt something with
``cryptography``'s high level symmetric encryption recipe:
.. code-block:: pycon
>>> from cryptography.fernet import Fernet
>>> # Put this somewhere safe!
>>> key = Fernet.generate_key()
>>> f = Fernet(key)
>>> token = f.encrypt(b"A really secret message. Not for prying eyes.")
>>> token
'...'
>>> f.decrypt(token)
'A really secret message. Not for prying eyes.'
You can find more information in the `documentation`_.
Discussion
~~~~~~~~~~
If you run into bugs, you can file them in our `issue tracker`_.
We maintain a `cryptography-dev`_ mailing list for development discussion.
You can also join ``#cryptography-dev`` on Freenode to ask questions or get
involved.
.. _`documentation`: https://cryptography.io/
.. _`issue tracker`: https://github.com/pyca/cryptography/issues
.. _`cryptography-dev`: https://mail.python.org/mailman/listinfo/cryptography-dev
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