1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>crypto_aead_encrypt</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="ch05s05.html" title="Authenticated Encryption With Associated Data (AEAD) Cipher API"><link rel="prev" href="API-crypto-aead-setauthsize.html" title="crypto_aead_setauthsize"><link rel="next" href="API-crypto-aead-decrypt.html" title="crypto_aead_decrypt"></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_aead_encrypt</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-crypto-aead-setauthsize.html">Prev</a>&#160;</td><th width="60%" align="center">Authenticated Encryption With Associated Data (AEAD) Cipher API</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-crypto-aead-decrypt.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-crypto-aead-encrypt"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>crypto_aead_encrypt &#8212; 
2  encrypt plaintext
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_aead_encrypt </b>(</code></td><td>struct aead_request * <var class="pdparam">req</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1097686004"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>req</code></em></span></dt><dd><p>
4     reference to the aead_request handle that holds all information
5     needed to perform the cipher operation
6    </p></dd></dl></div></div><div class="refsect1"><a name="idp1097687660"></a><h2>Description</h2><p>
7   Encrypt plaintext data using the aead_request handle. That data structure
8   and how it is filled with data is discussed with the aead_request_*
9   functions.
10   </p><p>
11
12   IMPORTANT NOTE The encryption operation creates the authentication data /
13   tag. That data is concatenated with the created ciphertext.
14   The ciphertext memory size is therefore the given number of
15   block cipher blocks + the size defined by the
16   crypto_aead_setauthsize invocation. The caller must ensure
17   that sufficient memory is available for the ciphertext and
18   the authentication tag.
19</p></div><div class="refsect1"><a name="idp1097689356"></a><h2>Return</h2><p>
20   0 if the cipher operation was successful; &lt; 0 if an error occurred
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