1.. _crypto: 2 3********************** 4Cryptographic Services 5********************** 6 7.. index:: single: cryptography 8 9The modules described in this chapter implement various algorithms of a 10cryptographic nature. They are available at the discretion of the installation. 11On Unix systems, the :mod:`crypt` module may also be available. 12Here's an overview: 13 14 15.. toctree:: 16 17 hashlib.rst 18 hmac.rst 19 secrets.rst 20