<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>crypto_blkcipher_get_iv</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="ch04s07.html" title="Synchronous Block Cipher API"><link rel="prev" href="API-crypto-blkcipher-set-iv.html" title="crypto_blkcipher_set_iv"><link rel="next" href="ch04s08.html" title="Single Block Cipher API"></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_blkcipher_get_iv</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-crypto-blkcipher-set-iv.html">Prev</a> </td><th width="60%" align="center">Synchronous Block Cipher API</th><td width="20%" align="right"> <a accesskey="n" href="ch04s08.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-crypto-blkcipher-get-iv"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>crypto_blkcipher_get_iv —
obtain IV from cipher
</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">void <b class="fsfunc">crypto_blkcipher_get_iv </b>(</code></td><td>struct crypto_blkcipher * <var class="pdparam">tfm</var>, </td></tr><tr><td> </td><td>u8 * <var class="pdparam">dst</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">len</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idp328504484"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>tfm</code></em></span></dt><dd><p>
cipher handle
</p></dd><dt><span class="term"><em class="parameter"><code>dst</code></em></span></dt><dd><p>
buffer filled with the IV
</p></dd><dt><span class="term"><em class="parameter"><code>len</code></em></span></dt><dd><p>
length of the buffer dst
</p></dd></dl></div></div><div class="refsect1"><a name="idp328508004"></a><h2>Description</h2><p>
The caller can obtain the IV set for the block cipher referenced by the
cipher handle and store it into the user-provided buffer. If the buffer
has an insufficient space, the IV is truncated to fit the buffer.
</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-blkcipher-set-iv.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04s07.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ch04s08.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">crypto_blkcipher_set_iv</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Single Block Cipher API</td></tr></table></div></body></html>
