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1 2 3 4 5 6 7 8 9 10 11 12 13 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>kcapi_aead_authsize</title><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="index.html" title="Linux Kernel Crypto API User Space Interface Library"><link rel="up" href="ch03s07.html" title="AEAD Cipher API - Generic"><link rel="prev" href="API-kcapi-aead-blocksize.html" title="kcapi_aead_blocksize"><link rel="next" href="API-kcapi-aead-inbuflen-enc.html" title="kcapi_aead_inbuflen_enc"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">kcapi_aead_authsize</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-kcapi-aead-blocksize.html">Prev</a> </td><th width="60%" align="center">AEAD Cipher API - Generic</th><td width="20%" align="right"> <a accesskey="n" href="API-kcapi-aead-inbuflen-enc.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-kcapi-aead-authsize"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>kcapi_aead_authsize —
return the maximum size of the tag
</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">uint32_t <b class="fsfunc">kcapi_aead_authsize </b>(</code></td><td>struct kcapi_handle * <var class="pdparam">handle</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idm1785"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>handle</code></em></span></dt><dd><p>
[in] cipher handle
</p></dd></dl></div></div><div class="refsect1"><a name="idm1793"></a><h2>Description</h2><p>
The returned maximum is the largest size of the authenticaation tag that can
be produced by the AEAD cipher. Smaller tag sizes may be chosen depending on
the AEAD cipher type.
</p><p>
<em class="parameter"><code>return</code></em> > 0 specifying the block size;
0 on error
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