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<?xml version="1.0" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>EVP_rc5_32_12_16_cbc</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@localhost" /> </head> <body> <ul id="index"> <li><a href="#NAME">NAME</a></li> <li><a href="#SYNOPSIS">SYNOPSIS</a></li> <li><a href="#DESCRIPTION">DESCRIPTION</a></li> <li><a href="#RETURN-VALUES">RETURN VALUES</a></li> <li><a href="#SEE-ALSO">SEE ALSO</a></li> <li><a href="#COPYRIGHT">COPYRIGHT</a></li> </ul> <h1 id="NAME">NAME</h1> <p>EVP_rc5_32_12_16_cbc, EVP_rc5_32_12_16_cfb, EVP_rc5_32_12_16_cfb64, EVP_rc5_32_12_16_ecb, EVP_rc5_32_12_16_ofb - EVP RC5 cipher</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <pre><code> #include <openssl/evp.h> const EVP_CIPHER *EVP_rc5_32_12_16_cbc(void) const EVP_CIPHER *EVP_rc5_32_12_16_cfb(void) const EVP_CIPHER *EVP_rc5_32_12_16_cfb64(void) const EVP_CIPHER *EVP_rc5_32_12_16_ecb(void) const EVP_CIPHER *EVP_rc5_32_12_16_ofb(void)</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>The RC5 encryption algorithm for EVP.</p> <dl> <dt id="EVP_rc5_32_12_16_cbc-EVP_rc5_32_12_16_cfb-EVP_rc5_32_12_16_cfb64-EVP_rc5_32_12_16_ecb-EVP_rc5_32_12_16_ofb">EVP_rc5_32_12_16_cbc(), EVP_rc5_32_12_16_cfb(), EVP_rc5_32_12_16_cfb64(), EVP_rc5_32_12_16_ecb(), EVP_rc5_32_12_16_ofb()</dt> <dd> <p>RC5 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a variable key length cipher with an additional "number of rounds" parameter. By default the key length is set to 128 bits and 12 rounds. Alternative key lengths can be set using <a href="../man3/EVP_CIPHER_CTX_set_key_length.html">EVP_CIPHER_CTX_set_key_length(3)</a>. The maximum key length is 2040 bits.</p> <p>The following rc5 specific <i>ctrl</i>s are supported (see <a href="../man3/EVP_CIPHER_CTX_ctrl.html">EVP_CIPHER_CTX_ctrl(3)</a>).</p> <dl> <dt id="EVP_CIPHER_CTX_ctrl-ctx-EVP_CTRL_SET_RC5_ROUNDS-rounds-NULL">EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC5_ROUNDS, rounds, NULL)</dt> <dd> <p>Sets the number of rounds to <b>rounds</b>. This must be one of RC5_8_ROUNDS, RC5_12_ROUNDS or RC5_16_ROUNDS.</p> </dd> <dt id="EVP_CIPHER_CTX_ctrl-ctx-EVP_CTRL_GET_RC5_ROUNDS-0-rounds">EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_RC5_ROUNDS, 0, &rounds)</dt> <dd> <p>Stores the number of rounds currently configured in <b>*rounds</b> where <b>*rounds</b> is an int.</p> </dd> </dl> </dd> </dl> <h1 id="RETURN-VALUES">RETURN VALUES</h1> <p>These functions return an <b>EVP_CIPHER</b> structure that contains the implementation of the symmetric cipher. See <a href="../man3/EVP_CIPHER_meth_new.html">EVP_CIPHER_meth_new(3)</a> for details of the <b>EVP_CIPHER</b> structure.</p> <h1 id="SEE-ALSO">SEE ALSO</h1> <p><a href="../man7/evp.html">evp(7)</a>, <a href="../man3/EVP_EncryptInit.html">EVP_EncryptInit(3)</a>, <a href="../man3/EVP_CIPHER_meth_new.html">EVP_CIPHER_meth_new(3)</a></p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.</p> <p>Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p> </body> </html>