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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>14. Cryptographic Services — Python 2.7.16 documentation</title> <link rel="stylesheet" href="../_static/classic.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 2.7.16 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="next" title="14.1. hashlib — Secure hashes and message digests" href="hashlib.html" /> <link rel="prev" title="13.6. plistlib — Generate and parse Mac OS X .plist files" href="plistlib.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <link rel="canonical" href="https://docs.python.org/2/library/crypto.html" /> <script type="text/javascript" src="../_static/copybutton.js"></script> </head><body> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="hashlib.html" title="14.1. hashlib — Secure hashes and message digests" accesskey="N">next</a> |</li> <li class="right" > <a href="plistlib.html" title="13.6. plistlib — Generate and parse Mac OS X .plist files" accesskey="P">previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.16 documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" accesskey="U">The Python Standard Library</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="cryptographic-services"> <span id="crypto"></span><h1>14. Cryptographic Services<a class="headerlink" href="#cryptographic-services" title="Permalink to this headline">¶</a></h1> <p id="index-0">The modules described in this chapter implement various algorithms of a cryptographic nature. They are available at the discretion of the installation. Here’s an overview:</p> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="hashlib.html">14.1. <code class="docutils literal notranslate"><span class="pre">hashlib</span></code> — Secure hashes and message digests</a><ul> <li class="toctree-l2"><a class="reference internal" href="hashlib.html#key-derivation">14.1.1. Key derivation</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="hmac.html">14.2. <code class="docutils literal notranslate"><span class="pre">hmac</span></code> — Keyed-Hashing for Message Authentication</a></li> <li class="toctree-l1"><a class="reference internal" href="md5.html">14.3. <code class="docutils literal notranslate"><span class="pre">md5</span></code> — MD5 message digest algorithm</a></li> <li class="toctree-l1"><a class="reference internal" href="sha.html">14.4. <code class="docutils literal notranslate"><span class="pre">sha</span></code> — SHA-1 message digest algorithm</a></li> </ul> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="plistlib.html" title="previous chapter">13.6. <code class="docutils literal notranslate"><span class="pre">plistlib</span></code> — Generate and parse Mac OS X <code class="docutils literal notranslate"><span class="pre">.plist</span></code> files</a></p> <h4>Next topic</h4> <p class="topless"><a href="hashlib.html" title="next chapter">14.1. <code class="docutils literal notranslate"><span class="pre">hashlib</span></code> — Secure hashes and message digests</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../_sources/library/crypto.rst.txt" rel="nofollow">Show Source</a></li> </ul> </div> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <div class="searchformwrapper"> <form class="search" action="../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="hashlib.html" title="14.1. hashlib — Secure hashes and message digests" >next</a> |</li> <li class="right" > <a href="plistlib.html" title="13.6. plistlib — Generate and parse Mac OS X .plist files" >previous</a> |</li> <li><img src="../_static/py.png" alt="" style="vertical-align: middle; margin-top: -1px"/></li> <li><a href="https://www.python.org/">Python</a> »</li> <li> <a href="../index.html">Python 2.7.16 documentation</a> » </li> <li class="nav-item nav-item-1"><a href="index.html" >The Python Standard Library</a> »</li> </ul> </div> <div class="footer"> © <a href="../copyright.html">Copyright</a> 1990-2019, Python Software Foundation. <br /> The Python Software Foundation is a non-profit corporation. <a href="https://www.python.org/psf/donations/">Please donate.</a> <br /> Last updated on Mar 27, 2019. <a href="../bugs.html">Found a bug</a>? <br /> Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.7.6. </div> </body> </html>