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EVP_shake256.html
<?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_sha3_224</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="#CONFORMING-TO">CONFORMING TO</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_sha3_224, EVP_sha3_256, EVP_sha3_384, EVP_sha3_512, EVP_shake128, EVP_shake256 - SHA-3 For EVP</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <pre><code> #include <openssl/evp.h> const EVP_MD *EVP_sha3_224(void); const EVP_MD *EVP_sha3_256(void); const EVP_MD *EVP_sha3_384(void); const EVP_MD *EVP_sha3_512(void); const EVP_MD *EVP_shake128(void); const EVP_MD *EVP_shake256(void);</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>SHA-3 (Secure Hash Algorithm 3) is a family of cryptographic hash functions standardized in NIST FIPS 202, first published in 2015. It is based on the Keccak algorithm.</p> <dl> <dt id="EVP_sha3_224-EVP_sha3_256-EVP_sha3_384-EVP_sha3_512">EVP_sha3_224(), EVP_sha3_256(), EVP_sha3_384(), EVP_sha3_512()</dt> <dd> <p>The SHA-3 SHA-3-224, SHA-3-256, SHA-3-384, and SHA-3-512 algorithms respectively. They produce 224, 256, 384 and 512 bits of output from a given input.</p> </dd> <dt id="EVP_shake128-EVP_shake256">EVP_shake128(), EVP_shake256()</dt> <dd> <p>The SHAKE-128 and SHAKE-256 Extendable Output Functions (XOF) that can generate a variable hash length.</p> <p>Specifically, <b>EVP_shake128</b> provides an overall security of 128 bits, while <b>EVP_shake256</b> provides that of 256 bits.</p> </dd> </dl> <h1 id="RETURN-VALUES">RETURN VALUES</h1> <p>These functions return a <b>EVP_MD</b> structure that contains the implementation of the symmetric cipher. See <a href="../man3/EVP_MD_meth_new.html">EVP_MD_meth_new(3)</a> for details of the <b>EVP_MD</b> structure.</p> <h1 id="CONFORMING-TO">CONFORMING TO</h1> <p>NIST FIPS 202.</p> <h1 id="SEE-ALSO">SEE ALSO</h1> <p><a href="../man7/evp.html">evp(7)</a>, <a href="../man3/EVP_DigestInit.html">EVP_DigestInit(3)</a></p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright 2017 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>
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