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<section id="passlib-hash-hex-digest-generic-hexadecimal-digests">
<h1><code class="samp docutils literal notranslate"><span class="pre">passlib.hash.hex_</span><em><span class="pre">digest</span></em></code> - Generic Hexadecimal Digests<a class="headerlink" href="#passlib-hash-hex-digest-generic-hexadecimal-digests" title="Link to this heading">¶</a></h1>
<div class="admonition danger">
<p class="admonition-title">Danger</p>
<p>Using a single round of any cryptographic hash
(especially without a salt) is so insecure
that it’s barely better than plaintext.
Do not use these schemes in new applications.</p>
</div>
<p>Some existing applications store passwords by storing them using
hexadecimal-encoded message digests, such as MD5 or SHA1.
Such schemes are <em>extremely</em> vulnerable to pre-computed brute-force attacks,
and should not be used in new applications. However, for the sake
of backwards compatibility when converting existing applications,
Passlib provides wrappers for few of the common hashes.
These classes all wrap the underlying hashlib implementations,
and can be used directly as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">from</span> <span class="nn">passlib.hash</span> <span class="kn">import</span> <span class="n">hex_sha1</span> <span class="k">as</span> <span class="n">hex_sha1</span>
<span class="gp">>>> </span><span class="c1"># hash password</span>
<span class="gp">>>> </span><span class="n">h</span> <span class="o">=</span> <span class="n">hex_sha1</span><span class="o">.</span><span class="n">hash</span><span class="p">(</span><span class="s2">"password"</span><span class="p">)</span>
<span class="gp">>>> </span><span class="n">h</span>
<span class="go">'5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8'</span>
<span class="gp">>>> </span><span class="c1"># verify correct password</span>
<span class="gp">>>> </span><span class="n">hex_sha1</span><span class="o">.</span><span class="n">verify</span><span class="p">(</span><span class="s2">"password"</span><span class="p">,</span> <span class="n">h</span><span class="p">)</span>
<span class="go">True</span>
<span class="gp">>>> </span><span class="c1"># verify incorrect password</span>
<span class="gp">>>> </span><span class="n">hex_sha1</span><span class="o">.</span><span class="n">verify</span><span class="p">(</span><span class="s2">"secret"</span><span class="p">,</span> <span class="n">h</span><span class="p">)</span>
<span class="go">False</span>
</pre></div>
</div>
<div class="admonition seealso">
<p class="admonition-title">See also</p>
<p>the generic <a class="reference internal" href="../narr/hash-tutorial.html#password-hash-examples"><span class="std std-ref">PasswordHash usage examples</span></a></p>
</div>
<section id="interface">
<span id="index-0"></span><h2>Interface<a class="headerlink" href="#interface" title="Link to this heading">¶</a></h2>
<dl class="py class">
<dt class="sig sig-object py" id="passlib.hash.hex_md4">
<em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">passlib.hash.</span></span><span class="sig-name descname"><span class="pre">hex_md4</span></span><a class="headerlink" href="#passlib.hash.hex_md4" title="Link to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py class">
<dt class="sig sig-object py" id="passlib.hash.hex_md5">
<em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">passlib.hash.</span></span><span class="sig-name descname"><span class="pre">hex_md5</span></span><a class="headerlink" href="#passlib.hash.hex_md5" title="Link to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py class">
<dt class="sig sig-object py" id="passlib.hash.hex_sha1">
<em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">passlib.hash.</span></span><span class="sig-name descname"><span class="pre">hex_sha1</span></span><a class="headerlink" href="#passlib.hash.hex_sha1" title="Link to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py class">
<dt class="sig sig-object py" id="passlib.hash.hex_sha256">
<em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">passlib.hash.</span></span><span class="sig-name descname"><span class="pre">hex_sha256</span></span><a class="headerlink" href="#passlib.hash.hex_sha256" title="Link to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py class">
<dt class="sig sig-object py" id="passlib.hash.hex_sha512">
<em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">passlib.hash.</span></span><span class="sig-name descname"><span class="pre">hex_sha512</span></span><a class="headerlink" href="#passlib.hash.hex_sha512" title="Link to this definition">¶</a></dt>
<dd><p>Each of these classes implements a plain hexadecimal encoded
message digest, using the relevant digest function from <code class="xref py py-mod docutils literal notranslate"><span class="pre">hashlib</span></code>,
and following the <a class="reference internal" href="passlib.ifc.html#password-hash-api"><span class="std std-ref">PasswordHash API</span></a>.</p>
<p>They support no settings or other keywords.</p>
</dd></dl>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Oracle VirtualBox’s <strong class="command">VBoxManager internalcommands passwordhash</strong> command
uses <a class="reference internal" href="#passlib.hash.hex_sha256" title="passlib.hash.hex_sha256"><code class="xref py py-class docutils literal notranslate"><span class="pre">hex_sha256</span></code></a>.</p>
</div>
</section>
<section id="format-algorithm">
<h2>Format & Algorithm<a class="headerlink" href="#format-algorithm" title="Link to this heading">¶</a></h2>
<p>All of these classes just report the result of the specified digest,
encoded as a series of lowercase hexadecimal characters;
though upper case is accepted as input.</p>
</section>
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<h3><a href="../contents.html">Table of Contents</a></h3>
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<li class="toctree-l1"><a class="reference internal" href="../index.html">Introduction</a></li>
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<li class="toctree-l2"><a class="reference internal" href="passlib.apache.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.apache</span></code> - Apache Password Files</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.apps.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.apps</span></code> - Helpers for various applications</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.context.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.context</span></code> - CryptContext Hash Manager</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.crypto.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.crypto</span></code> - Cryptographic Helper Functions</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.exc.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.exc</span></code> - Exceptions and warnings</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.ext.django.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.ext.django</span></code> - Django Password Hashing Plugin</a></li>
<li class="toctree-l2 current"><a class="reference internal" href="passlib.hash.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.hash</span></code> - Password Hashing Schemes</a><ul class="current">
<li class="toctree-l3"><a class="reference internal" href="passlib.hash.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="passlib.hash.html#unix-hashes">Unix Hashes</a></li>
<li class="toctree-l3"><a class="reference internal" href="passlib.hash.html#other-modular-crypt-hashes">Other “Modular Crypt” Hashes</a></li>
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<li class="toctree-l3"><a class="reference internal" href="passlib.hash.html#sql-database-hashes">SQL Database Hashes</a></li>
<li class="toctree-l3"><a class="reference internal" href="passlib.hash.html#ms-windows-hashes">MS Windows Hashes</a></li>
<li class="toctree-l3"><a class="reference internal" href="passlib.hash.html#cisco-hashes">Cisco Hashes</a></li>
<li class="toctree-l3 current"><a class="reference internal" href="passlib.hash.html#other-hashes">Other Hashes</a><ul class="current">
<li class="toctree-l4"><a class="reference internal" href="passlib.hash.django_std.html"><code class="samp docutils literal notranslate"><span class="pre">passlib.hash.django_</span><em><span class="pre">digest</span></em></code> - Django-specific Hashes</a></li>
<li class="toctree-l4"><a class="reference internal" href="passlib.hash.grub_pbkdf2_sha512.html"><code class="xref py py-class docutils literal notranslate"><span class="pre">passlib.hash.grub_pbkdf2_sha512</span></code> - Grub’s PBKDF2 Hash</a></li>
<li class="toctree-l4 current"><a class="current reference internal" href="#"><code class="samp docutils literal notranslate"><span class="pre">passlib.hash.hex_</span><em><span class="pre">digest</span></em></code> - Generic Hexadecimal Digests</a></li>
<li class="toctree-l4"><a class="reference internal" href="passlib.hash.plaintext.html"><code class="xref py py-class docutils literal notranslate"><span class="pre">passlib.hash.plaintext</span></code> - Plaintext</a></li>
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<li class="toctree-l2"><a class="reference internal" href="passlib.hosts.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.hosts</span></code> - OS Password Handling</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.ifc.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.ifc</span></code> – Password Hash Interface</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.pwd.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.pwd</span></code> – Password generation helpers</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.registry.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.registry</span></code> - Password Handler Registry</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.totp.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.totp</span></code> – TOTP / Two Factor Authentication</a></li>
<li class="toctree-l2"><a class="reference internal" href="passlib.utils.html"><code class="xref py py-mod docutils literal notranslate"><span class="pre">passlib.utils</span></code> - Helper Functions</a></li>
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