116 lines
3.1 KiB
HTML
116 lines
3.1 KiB
HTML
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<?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_sha3_224</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="#conforming_to">CONFORMING TO</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_sha3_224,
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EVP_sha3_256,
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EVP_sha3_384,
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EVP_sha3_512,
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EVP_shake128,
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EVP_shake256
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- SHA-3 For EVP</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_MD *EVP_sha3_224(void);
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const EVP_MD *EVP_sha3_256(void);
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const EVP_MD *EVP_sha3_384(void);
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const EVP_MD *EVP_sha3_512(void);</pre>
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<pre>
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const EVP_MD *EVP_shake128(void);
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const EVP_MD *EVP_shake256(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>SHA-3 (Secure Hash Algorithm 3) is a family of cryptographic hash functions
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standardized in NIST FIPS 202, first published in 2015. It is based on the
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Keccak algorithm.</p>
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<dl>
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<dt><strong><a name="evp_sha3_224" class="item">EVP_sha3_224(),
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EVP_sha3_256(),
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EVP_sha3_384(),
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EVP_sha3_512()</a></strong></dt>
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<dd>
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<p>The SHA-3 SHA-3-224, SHA-3-256, SHA-3-384, and SHA-3-512 algorithms
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respectively. They produce 224, 256, 384 and 512 bits of output from a given
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input.</p>
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</dd>
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<dt><strong><a name="evp_shake128" class="item">EVP_shake128(),
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EVP_shake256()</a></strong></dt>
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<dd>
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<p>The SHAKE-128 and SHAKE-256 Extendable Output Functions (XOF) that can generate
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a variable hash length.</p>
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<p>Specifically, <strong>EVP_shake128</strong> provides an overall security of 128 bits, while
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<strong>EVP_shake256</strong> provides that of 256 bits.</p>
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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 a <strong>EVP_MD</strong> structure that contains the
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implementation of the symmetric cipher. See <em>EVP_MD_meth_new(3)</em> for
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details of the <strong>EVP_MD</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="conforming_to">CONFORMING TO</a></h1>
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<p>NIST FIPS 202.</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_DigestInit(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 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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