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<h2><span class="refentrytitle"><a name="libgwyddion-gwymd5.top_of_page"></a>gwymd5</span></h2>
<p>gwymd5 — Compute MD5 digest</p>
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<a name="libgwyddion-gwymd5.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <libgwyddion/gwyddion.h>
<span class="returnvalue">void</span> <a class="link" href="libgwyddion-gwymd5.html#gwy-md5-get-digest" title="gwy_md5_get_digest ()">gwy_md5_get_digest</a> (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *buffer</code></em>,
<em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> buffer_size</code></em>,
<em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> digest[16]</code></em>);
</pre>
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<a name="libgwyddion-gwymd5.description"></a><h2>Description</h2>
<p>
MD5 (<a class="ulink" href="http://www.faqs.org/rfcs/rfc1321.html" target="_top">RFC1321</a>) is
a reasonably fast digest function. It can be used for hash key creation and
fast data indexing, but should be no longer used for cryptographic and
security purposes.
</p>
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<a name="libgwyddion-gwymd5.details"></a><h2>Details</h2>
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<a name="gwy-md5-get-digest"></a><h3>gwy_md5_get_digest ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gwy_md5_get_digest (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *buffer</code></em>,
<em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> buffer_size</code></em>,
<em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> digest[16]</code></em>);</pre>
<p>
Compute the MD5 hash of a buffer.
</p>
<p>
The MD5 algorithm takes as input a message of arbitrary length and
produces as output a 128-bit "fingerprint" or "message digest" of
the input. For more information see RFC 1321.
</p>
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<td><p><span class="term"><em class="parameter"><code>buffer</code></em> :</span></p></td>
<td>A byte buffer.</td>
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<td><p><span class="term"><em class="parameter"><code>buffer_size</code></em> :</span></p></td>
<td>Size of <em class="parameter"><code>buffer</code></em> (in bytes) or -1 if <em class="parameter"><code>buffer</code></em> is nul-terminated.</td>
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<td><p><span class="term"><em class="parameter"><code>digest</code></em> :</span></p></td>
<td>16 bytes to store the hash code to.</td>
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