110 lines
2.9 KiB
HTML
Executable File
110 lines
2.9 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_sha224</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_sha224,
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EVP_sha256,
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EVP_sha512_224,
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EVP_sha512_256,
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EVP_sha384,
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EVP_sha512
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- SHA-2 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_sha224(void);
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const EVP_MD *EVP_sha256(void);
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const EVP_MD *EVP_sha512_224(void);
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const EVP_MD *EVP_sha512_256(void);
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const EVP_MD *EVP_sha384(void);
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const EVP_MD *EVP_sha512(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-2 (Secure Hash Algorithm 2) is a family of cryptographic hash functions
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standardized in NIST FIPS 180-4, first published in 2001.</p>
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<dl>
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<dt><strong><a name="evp_sha224" class="item">EVP_sha224(),
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EVP_sha256(),
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EVP_sha512_224,
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EVP_sha512_256,
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EVP_sha384(),
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EVP_sha512()</a></strong></dt>
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<dd>
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<p>The SHA-2 SHA-224, SHA-256, SHA-512/224, SHA512/256, SHA-384 and SHA-512
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algorithms, which generate 224, 256, 224, 256, 384 and 512 bits
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respectively of output from a given input.</p>
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<p>The two algorithms: SHA-512/224 and SHA512/256 are truncated forms of the
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SHA-512 algorithm. They are distinct from SHA-224 and SHA-256 even though
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their outputs are of the same size.</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 180-4.</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 2017-2018 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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