1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>crypto_shash_digest</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Kernel Crypto API"><link rel="up" href="ch05s13.html" title="Synchronous Message Digest API"><link rel="prev" href="API-crypto-shash-setkey.html" title="crypto_shash_setkey"><link rel="next" href="API-crypto-shash-export.html" title="crypto_shash_export"></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">crypto_shash_digest</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-crypto-shash-setkey.html">Prev</a>&#160;</td><th width="60%" align="center">Synchronous Message Digest API</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-crypto-shash-export.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-crypto-shash-digest"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>crypto_shash_digest &#8212; 
2  calculate message digest for buffer
3 </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">int <b class="fsfunc">crypto_shash_digest </b>(</code></td><td>struct shash_desc * <var class="pdparam">desc</var>, </td></tr><tr><td>&#160;</td><td>const u8 * <var class="pdparam">data</var>, </td></tr><tr><td>&#160;</td><td>unsigned int <var class="pdparam">len</var>, </td></tr><tr><td>&#160;</td><td>u8 * <var class="pdparam">out</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1098294740"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>desc</code></em></span></dt><dd><p>
4     see <code class="function">crypto_shash_final</code>
5    </p></dd><dt><span class="term"><em class="parameter"><code>data</code></em></span></dt><dd><p>
6     see <code class="function">crypto_shash_update</code>
7    </p></dd><dt><span class="term"><em class="parameter"><code>len</code></em></span></dt><dd><p>
8     see <code class="function">crypto_shash_update</code>
9    </p></dd><dt><span class="term"><em class="parameter"><code>out</code></em></span></dt><dd><p>
10     see <code class="function">crypto_shash_final</code>
11    </p></dd></dl></div></div><div class="refsect1"><a name="idp1098300372"></a><h2>Description</h2><p>
12   This function is a <span class="quote">&#8220;<span class="quote">short-hand</span>&#8221;</span> for the function calls of crypto_shash_init,
13   crypto_shash_update and crypto_shash_final. The parameters have the same
14   meaning as discussed for those separate three functions.
15</p></div><div class="refsect1"><a name="idp1098301332"></a><h2>Return</h2><p>
16   0 if the message digest creation was successful; &lt; 0 if an error
17   occurred
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