1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>crypto_blkcipher_decrypt_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="ch05s07.html" title="Synchronous Block Cipher API"><link rel="prev" href="API-crypto-blkcipher-decrypt.html" title="crypto_blkcipher_decrypt"><link rel="next" href="API-crypto-blkcipher-set-iv.html" title="crypto_blkcipher_set_iv"></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_decrypt_iv</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-crypto-blkcipher-decrypt.html">Prev</a>&#160;</td><th width="60%" align="center">Synchronous Block Cipher API</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-crypto-blkcipher-set-iv.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-crypto-blkcipher-decrypt-iv"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>crypto_blkcipher_decrypt_iv &#8212; 
2  decrypt ciphertext with dedicated IV
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_blkcipher_decrypt_iv </b>(</code></td><td>struct blkcipher_desc * <var class="pdparam">desc</var>, </td></tr><tr><td>&#160;</td><td>struct scatterlist * <var class="pdparam">dst</var>, </td></tr><tr><td>&#160;</td><td>struct scatterlist * <var class="pdparam">src</var>, </td></tr><tr><td>&#160;</td><td>unsigned int <var class="pdparam">nbytes</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1097868820"></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     reference to the block cipher handle with meta data
5    </p></dd><dt><span class="term"><em class="parameter"><code>dst</code></em></span></dt><dd><p>
6     scatter/gather list that is filled by the cipher operation with the
7     plaintext
8    </p></dd><dt><span class="term"><em class="parameter"><code>src</code></em></span></dt><dd><p>
9     scatter/gather list that holds the ciphertext
10    </p></dd><dt><span class="term"><em class="parameter"><code>nbytes</code></em></span></dt><dd><p>
11     number of bytes of the ciphertext to decrypt.
12    </p></dd></dl></div></div><div class="refsect1"><a name="idp1097873508"></a><h2>Description</h2><p>
13   Decrypt ciphertext data with the use of an IV that is solely used for this
14   cipher operation. Any previously set IV is not used.
15   </p><p>
16
17   The blkcipher_desc data structure must be filled by the caller as documented
18   for the crypto_blkcipher_encrypt_iv call above.
19</p></div><div class="refsect1"><a name="idp1097874500"></a><h2>Return</h2><p>
20   0 if the cipher operation was successful; &lt; 0 if an error occurred
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