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Next: <a href="Symmetric-cryptography.html#Symmetric-cryptography" accesskey="n" rel="next">Symmetric cryptography</a>, Previous: <a href="Generalities.html#Generalities" accesskey="p" rel="prev">Generalities</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<h2 class="chapter">4 Handler Functions</h2>
<p>Libgcrypt makes it possible to install so called ‘handler functions’,
which get called by Libgcrypt in case of certain events.
</p>
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<tr><td align="left" valign="top">• <a href="Progress-handler.html#Progress-handler" accesskey="1">Progress handler</a>:</td><td> </td><td align="left" valign="top">Using a progress handler function.
</td></tr>
<tr><td align="left" valign="top">• <a href="Allocation-handler.html#Allocation-handler" accesskey="2">Allocation handler</a>:</td><td> </td><td align="left" valign="top">Using special memory allocation functions.
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<tr><td align="left" valign="top">• <a href="Error-handler.html#Error-handler" accesskey="3">Error handler</a>:</td><td> </td><td align="left" valign="top">Using error handler functions.
</td></tr>
<tr><td align="left" valign="top">• <a href="Logging-handler.html#Logging-handler" accesskey="4">Logging handler</a>:</td><td> </td><td align="left" valign="top">Using a special logging function.
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