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<tr><td colspan="5" class="shortcuts"><nobr><a href="#id391036" class="shortcut">Top</a>
 | 
<a href="#id391700" class="shortcut">Description</a></nobr></td></tr>
</table>
<div class="refentry" lang="en">
<a name="gnet-md5"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id391036"></a><span class="refentrytitle">MD5</span>
</h2>
<p>MD5 — MD5 hash</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
#include <gnet.h>
<a href="gnet-md5.html#GMD5:CAPS">GMD5</a>;
#define <a href="gnet-md5.html#GNET-MD5-HASH-LENGTH:CAPS">GNET_MD5_HASH_LENGTH</a>
<a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* <a href="gnet-md5.html#gnet-md5-new">gnet_md5_new</a> (const gchar *buffer,
guint length);
<a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* <a href="gnet-md5.html#gnet-md5-new-string">gnet_md5_new_string</a> (const gchar *str);
<a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* <a href="gnet-md5.html#gnet-md5-clone">gnet_md5_clone</a> (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);
void <a href="gnet-md5.html#gnet-md5-delete">gnet_md5_delete</a> (<a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);
<a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* <a href="gnet-md5.html#gnet-md5-new-incremental">gnet_md5_new_incremental</a> (void);
void <a href="gnet-md5.html#gnet-md5-update">gnet_md5_update</a> (<a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5,
const gchar *buffer,
guint length);
void <a href="gnet-md5.html#gnet-md5-final">gnet_md5_final</a> (<a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);
gboolean <a href="gnet-md5.html#gnet-md5-equal">gnet_md5_equal</a> (gconstpointer p1,
gconstpointer p2);
guint <a href="gnet-md5.html#gnet-md5-hash">gnet_md5_hash</a> (gconstpointer p);
gchar* <a href="gnet-md5.html#gnet-md5-get-digest">gnet_md5_get_digest</a> (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);
gchar* <a href="gnet-md5.html#gnet-md5-get-string">gnet_md5_get_string</a> (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);
void <a href="gnet-md5.html#gnet-md5-copy-string">gnet_md5_copy_string</a> (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5,
gchar *buffer);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id391700"></a><h2>Description</h2>
<p>
The MD5 module provide support for computing and manipulating MD5
hashes. MD5 is a hash function with a very low probability of
collision. MD5 is considered weaker than SHA.
</p>
<p>
An MD5 can be calculated at one time or incrementally. To create a
MD5 at one time, call <a href="gnet-md5.html#gnet-md5-new"><code class="function">gnet_md5_new()</code></a> with the data. To create a MD5
incrementally, call <a href="gnet-md5.html#gnet-md5-new-incremental"><code class="function">gnet_md5_new_incremental()</code></a> to create the MD5
object, then <a href="gnet-md5.html#gnet-md5-update"><code class="function">gnet_md5_update()</code></a> one or more times with data to hash,
and finally call <a href="gnet-md5.html#gnet-md5-final"><code class="function">gnet_md5_final()</code></a>.
</p>
<p>
To get the digest, or hash value, call <a href="gnet-md5.html#gnet-md5-get-digest"><code class="function">gnet_md5_get_digest()</code></a>. This
returns the raw digest as an array of <a href="gnet-md5.html#GNET-MD5-HASH-LENGTH:CAPS"><code class="literal">GNET_MD5_HASH_LENGTH</code></a> bytes. To
get the digest as a human-readable hexidecimal string, call
<a href="gnet-md5.html#gnet-md5-get-string"><code class="function">gnet_md5_get_string()</code></a> or <a href="gnet-md5.html#gnet-md5-copy-string"><code class="function">gnet_md5_copy_string()</code></a>.
</p>
<p>
</p>
<div class="informalexample"><pre class="programlisting">
gchar buffer[] = "Hello world!";
gchar buffer2[] = "Second line";
GMD5* md5;
gchar* md5_str;
/* Compute an MD5 at one time */
md5 = gnet_md5_new (buffer, strlen(buffer));
md5_str = gnet_md5_get_string (md5);
g_print ("The MD5 of %s is %s\n", buffer, md5_str);
/* Use MD5... */
g_free (md5_str);
gnet_md5_delete (md5);
/* Compute an MD5 incrementally */
md5 = gnet_md5_new_incremental ();
gnet_md5_update (md5, buffer, strlen(buffer));
gnet_md5_update (md5, buffer2, strlen(buffer2));
gnet_md5_final (md5);
/* Use MD5... */
gnet_md5_delete (md5);
</pre></div>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id391825"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id391834"></a><h3>
<a name="GMD5:CAPS"></a>GMD5</h3>
<a class="indexterm" name="id391847"></a><pre class="programlisting">typedef struct _GMD5 GMD5;</pre>
<p>
GMD5 is a MD5 hash.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id391865"></a><h3>
<a name="GNET-MD5-HASH-LENGTH:CAPS"></a>GNET_MD5_HASH_LENGTH</h3>
<a class="indexterm" name="id391878"></a><pre class="programlisting">#define GNET_MD5_HASH_LENGTH 16
</pre>
<p>
Length of the MD5 hash in bytes.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id391896"></a><h3>
<a name="gnet-md5-new"></a>gnet_md5_new ()</h3>
<a class="indexterm" name="id391909"></a><pre class="programlisting"><a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* gnet_md5_new (const gchar *buffer,
guint length);</pre>
<p>
Creates a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a> from <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> buffer to hash
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em> :</span></td>
<td> length of <em class="parameter"><code>buffer</code></em>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392016"></a><h3>
<a name="gnet-md5-new-string"></a>gnet_md5_new_string ()</h3>
<a class="indexterm" name="id392029"></a><pre class="programlisting"><a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* gnet_md5_new_string (const gchar *str);</pre>
<p>
Creates a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a> from <em class="parameter"><code>str</code></em>. <em class="parameter"><code>str</code></em> is a hexidecimal string
representing the digest.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>str</code></em> :</span></td>
<td> hexidecimal string
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392116"></a><h3>
<a name="gnet-md5-clone"></a>gnet_md5_clone ()</h3>
<a class="indexterm" name="id392128"></a><pre class="programlisting"><a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* gnet_md5_clone (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);</pre>
<p>
Copies a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>md5</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a copy of <em class="parameter"><code>md5</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392209"></a><h3>
<a name="gnet-md5-delete"></a>gnet_md5_delete ()</h3>
<a class="indexterm" name="id392221"></a><pre class="programlisting">void gnet_md5_delete (<a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);</pre>
<p>
Deletes a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>md5</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392285"></a><h3>
<a name="gnet-md5-new-incremental"></a>gnet_md5_new_incremental ()</h3>
<a class="indexterm" name="id392298"></a><pre class="programlisting"><a href="gnet-md5.html#GMD5:CAPS">GMD5</a>* gnet_md5_new_incremental (void);</pre>
<p>
Creates a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a> incrementally. After creating a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>, call
<a href="gnet-md5.html#gnet-md5-update"><code class="function">gnet_md5_update()</code></a> one or more times to hash data. Finally, call
<a href="gnet-md5.html#gnet-md5-final"><code class="function">gnet_md5_final()</code></a> to compute the final hash value.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a new <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>.
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392381"></a><h3>
<a name="gnet-md5-update"></a>gnet_md5_update ()</h3>
<a class="indexterm" name="id392393"></a><pre class="programlisting">void gnet_md5_update (<a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5,
const gchar *buffer,
guint length);</pre>
<p>
Updates the hash with <em class="parameter"><code>buffer</code></em>. This may be called several times
on a hash created by <a href="gnet-md5.html#gnet-md5-new-incremental"><code class="function">gnet_md5_new_incremental()</code></a> before being
finalized by calling <a href="gnet-md5.html#gnet-md5-final"><code class="function">gnet_md5_final()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>md5</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> buffer to add
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em> :</span></td>
<td> length of <em class="parameter"><code>buffer</code></em>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392525"></a><h3>
<a name="gnet-md5-final"></a>gnet_md5_final ()</h3>
<a class="indexterm" name="id392537"></a><pre class="programlisting">void gnet_md5_final (<a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);</pre>
<p>
Calcuates the final hash value of a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>. This should only be
called on an <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a> created by <a href="gnet-md5.html#gnet-md5-new-incremental"><code class="function">gnet_md5_new_incremental()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>md5</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392620"></a><h3>
<a name="gnet-md5-equal"></a>gnet_md5_equal ()</h3>
<a class="indexterm" name="id392632"></a><pre class="programlisting">gboolean gnet_md5_equal (gconstpointer p1,
gconstpointer p2);</pre>
<p>
Compares two <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>'s for equality.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>p1</code></em> :</span></td>
<td> first <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>.
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>p2</code></em> :</span></td>
<td> second <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>.
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if they are equal; FALSE otherwise.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392735"></a><h3>
<a name="gnet-md5-hash"></a>gnet_md5_hash ()</h3>
<a class="indexterm" name="id392748"></a><pre class="programlisting">guint gnet_md5_hash (gconstpointer p);</pre>
<p>
Creates a hash code for a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a> for use with GHashTable. This
hash value is not the same as the MD5 digest.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>p</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the hash code for <em class="parameter"><code>p</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392829"></a><h3>
<a name="gnet-md5-get-digest"></a>gnet_md5_get_digest ()</h3>
<a class="indexterm" name="id392841"></a><pre class="programlisting">gchar* gnet_md5_get_digest (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);</pre>
<p>
Gets the raw MD5 digest.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>md5</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a callee-owned buffer containing the MD5 hash digest.
The buffer is <a href="gnet-md5.html#GNET-MD5-HASH-LENGTH:CAPS"><code class="literal">GNET_MD5_HASH_LENGTH</code></a> bytes long.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id392919"></a><h3>
<a name="gnet-md5-get-string"></a>gnet_md5_get_string ()</h3>
<a class="indexterm" name="id392932"></a><pre class="programlisting">gchar* gnet_md5_get_string (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5);</pre>
<p>
Gets the digest represented a human-readable string.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>md5</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a hexadecimal string representing the digest. The string
is 2 * <a href="gnet-md5.html#GNET-MD5-HASH-LENGTH:CAPS"><code class="literal">GNET_MD5_HASH_LENGTH</code></a> bytes long and NULL terminated. The
string is caller owned.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id393010"></a><h3>
<a name="gnet-md5-copy-string"></a>gnet_md5_copy_string ()</h3>
<a class="indexterm" name="id393022"></a><pre class="programlisting">void gnet_md5_copy_string (const <a href="gnet-md5.html#GMD5:CAPS">GMD5</a> *md5,
gchar *buffer);</pre>
<p>
Copies the digest, represented as a string, into <em class="parameter"><code>buffer</code></em>. The
string is not NULL terminated.</p>
<p>
</p>
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<td><span class="term"><em class="parameter"><code>md5</code></em> :</span></td>
<td> a <a href="gnet-md5.html#GMD5:CAPS"><span class="type">GMD5</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> buffer at least 2 * <a href="gnet-md5.html#GNET-MD5-HASH-LENGTH:CAPS"><code class="literal">GNET_MD5_HASH_LENGTH</code></a> bytes long
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