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<title>EVP_md5</title>
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<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>
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<h1 id="NAME">NAME</h1>
<p>EVP_md5, EVP_md5_sha1 - MD5 For EVP</p>
<h1 id="SYNOPSIS">SYNOPSIS</h1>
<pre><code> #include <openssl/evp.h>
const EVP_MD *EVP_md5(void);
const EVP_MD *EVP_md5_sha1(void);</code></pre>
<h1 id="DESCRIPTION">DESCRIPTION</h1>
<p>MD5 is a cryptographic hash function standardized in RFC 1321 and designed by Ronald Rivest.</p>
<p>The CMU Software Engineering Institute considers MD5 unsuitable for further use since its security has been severely compromised.</p>
<dl>
<dt id="EVP_md5">EVP_md5()</dt>
<dd>
<p>The MD5 algorithm which produces a 128-bit output from a given input.</p>
</dd>
<dt id="EVP_md5_sha1">EVP_md5_sha1()</dt>
<dd>
<p>A hash algorithm of SSL v3 that combines MD5 with SHA-1 as described in RFC 6101.</p>
<p>WARNING: this algorithm is not intended for non-SSL usage.</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>IETF RFC 1321.</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 2017-2019 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>
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