116 lines
3.5 KiB
HTML
Executable File
116 lines
3.5 KiB
HTML
Executable File
<?xml version="1.0" ?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>EVP_rc5_32_12_16_cbc</title>
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<meta http-equiv="content-type" content="text/html; charset=utf-8" />
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<link rev="made" href="mailto:root@localhost" />
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</head>
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<body style="background-color: white">
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<!-- INDEX BEGIN -->
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<div name="index">
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<p><a name="__index__"></a></p>
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<ul>
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<li><a href="#name">NAME</a></li>
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<li><a href="#synopsis">SYNOPSIS</a></li>
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<li><a href="#description">DESCRIPTION</a></li>
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<li><a href="#return_values">RETURN VALUES</a></li>
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<li><a href="#see_also">SEE ALSO</a></li>
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<li><a href="#copyright">COPYRIGHT</a></li>
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</ul>
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<hr name="index" />
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</div>
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<!-- INDEX END -->
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<p>
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</p>
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<hr />
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<h1><a name="name">NAME</a></h1>
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<p>EVP_rc5_32_12_16_cbc,
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EVP_rc5_32_12_16_cfb,
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EVP_rc5_32_12_16_cfb64,
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EVP_rc5_32_12_16_ecb,
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EVP_rc5_32_12_16_ofb
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- EVP RC5 cipher</p>
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<p>
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</p>
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<hr />
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<h1><a name="synopsis">SYNOPSIS</a></h1>
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<pre>
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#include <openssl/evp.h></pre>
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<pre>
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const EVP_CIPHER *EVP_rc5_32_12_16_cbc(void)
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const EVP_CIPHER *EVP_rc5_32_12_16_cfb(void)
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const EVP_CIPHER *EVP_rc5_32_12_16_cfb64(void)
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const EVP_CIPHER *EVP_rc5_32_12_16_ecb(void)
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const EVP_CIPHER *EVP_rc5_32_12_16_ofb(void)</pre>
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<p>
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</p>
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<hr />
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<h1><a name="description">DESCRIPTION</a></h1>
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<p>The RC5 encryption algorithm for EVP.</p>
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<dl>
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<dt><strong><a name="evp_rc5_32_12_16_cbc" class="item">EVP_rc5_32_12_16_cbc(),
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EVP_rc5_32_12_16_cfb(),
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EVP_rc5_32_12_16_cfb64(),
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EVP_rc5_32_12_16_ecb(),
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EVP_rc5_32_12_16_ofb()</a></strong></dt>
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<dd>
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<p>RC5 encryption algorithm in CBC, CFB, ECB and OFB modes respectively. This is a
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variable key length cipher with an additional "number of rounds" parameter. By
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default the key length is set to 128 bits and 12 rounds. Alternative key lengths
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can be set using <em>EVP_CIPHER_CTX_set_key_length(3)</em>. The maximum key length is
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2040 bits.</p>
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<p>The following rc5 specific <em>ctrl</em>s are supported (see
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<a href="#evp_cipher_ctx_ctrl">EVP_CIPHER_CTX_ctrl(3)</a>).</p>
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<dl>
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<dt><strong><a name="evp_cipher_ctx_ctrl" class="item">EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_RC5_ROUNDS, rounds, NULL)</a></strong></dt>
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<dd>
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<p>Sets the number of rounds to <strong>rounds</strong>. This must be one of RC5_8_ROUNDS,
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RC5_12_ROUNDS or RC5_16_ROUNDS.</p>
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</dd>
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<dt><strong>EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_RC5_ROUNDS, 0, &rounds)</strong></dt>
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<dd>
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<p>Stores the number of rounds currently configured in <strong>*rounds</strong> where <strong>*rounds</strong>
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is an int.</p>
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</dd>
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</dl>
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</dd>
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</dl>
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<p>
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</p>
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<hr />
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<h1><a name="return_values">RETURN VALUES</a></h1>
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<p>These functions return an <strong>EVP_CIPHER</strong> structure that contains the
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implementation of the symmetric cipher. See <em>EVP_CIPHER_meth_new(3)</em> for
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details of the <strong>EVP_CIPHER</strong> structure.</p>
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<p>
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</p>
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<hr />
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<h1><a name="see_also">SEE ALSO</a></h1>
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<p><em>evp(7)</em>,
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<em>EVP_EncryptInit(3)</em>,
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<em>EVP_CIPHER_meth_new(3)</em></p>
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<p>
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</p>
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<hr />
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<h1><a name="copyright">COPYRIGHT</a></h1>
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<p>Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.</p>
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<p>Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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<a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
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</body>
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</html>
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