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  <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&#8217;s an overview:</p>
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<li class="toctree-l1"><a class="reference internal" href="hashlib.html">14.1. <tt class="docutils literal"><span class="pre">hashlib</span></tt> &#8212; Secure hashes and message digests</a></li>
<li class="toctree-l1"><a class="reference internal" href="hmac.html">14.2. <tt class="docutils literal"><span class="pre">hmac</span></tt> &#8212; Keyed-Hashing for Message Authentication</a></li>
<li class="toctree-l1"><a class="reference internal" href="md5.html">14.3. <tt class="docutils literal"><span class="pre">md5</span></tt> &#8212; MD5 message digest algorithm</a></li>
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<p id="index-1">Hardcore cypherpunks will probably find the cryptographic modules written by
A.M. Kuchling of further interest; the package contains modules for various
encryption algorithms, most notably AES.  These modules are not distributed with
Python but available separately.  See the URL
<a class="reference external" href="http://www.pycrypto.org">http://www.pycrypto.org</a>  for more information.</p>
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