1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>crypto_hash_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="ch05s09.html" title="Synchronous Message Digest API"><link rel="prev" href="API-crypto-hash-final.html" title="crypto_hash_final"><link rel="next" href="API-crypto-hash-setkey.html" title="crypto_hash_setkey"></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_hash_digest</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-crypto-hash-final.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-hash-setkey.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-crypto-hash-digest"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>crypto_hash_digest &#8212; 
2  calculate message digest for a 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_hash_digest </b>(</code></td><td>struct hash_desc * <var class="pdparam">desc</var>, </td></tr><tr><td>&#160;</td><td>struct scatterlist * <var class="pdparam">sg</var>, </td></tr><tr><td>&#160;</td><td>unsigned int <var class="pdparam">nbytes</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="idp1098032732"></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_hash_final</code>
5    </p></dd><dt><span class="term"><em class="parameter"><code>sg</code></em></span></dt><dd><p>
6     see <code class="function">crypto_hash_update</code>
7    </p></dd><dt><span class="term"><em class="parameter"><code>nbytes</code></em></span></dt><dd><p>
8     see <code class="function">crypto_hash_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_hash_final</code>
11    </p></dd></dl></div></div><div class="refsect1"><a name="idp1098038364"></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_hash_init,
13   crypto_hash_update and crypto_hash_final. The parameters have the same
14   meaning as discussed for those separate three functions.
15</p></div><div class="refsect1"><a name="idp1098039316"></a><h2>Return</h2><p>
16   0 if the message digest creation was successful; &lt; 0 if an error
17   occurred
18</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-crypto-hash-final.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch05s09.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-crypto-hash-setkey.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">crypto_hash_final</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">crypto_hash_setkey</span></td></tr></table></div></body></html>
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