.. _crypto:

**********************
Cryptographic Services
**********************

.. index:: single: cryptography

The modules described in this chapter implement various algorithms of a
cryptographic nature.  They are available at the discretion of the installation.
On Unix systems, the :mod:`crypt` module may also be available.
Here's an overview:


.. toctree::

   hashlib.rst
   hashlib-blake2.rst
   hmac.rst
   secrets.rst