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<title>d2i_DHparams</title>
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<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="#SEE-ALSO">SEE ALSO</a></li>
<li><a href="#COPYRIGHT">COPYRIGHT</a></li>
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<h1 id="NAME">NAME</h1>
<p>d2i_DHparams, i2d_DHparams - PKCS#3 DH parameter functions</p>
<h1 id="SYNOPSIS">SYNOPSIS</h1>
<pre><code> #include <openssl/dh.h>
DH *d2i_DHparams(DH **a, const unsigned char **pp, long length);
int i2d_DHparams(DH *a, unsigned char **pp);</code></pre>
<h1 id="DESCRIPTION">DESCRIPTION</h1>
<p>These functions decode and encode PKCS#3 DH parameters using the DHparameter structure described in PKCS#3.</p>
<p>Otherwise these behave in a similar way to d2i_X509() and i2d_X509() described in the <a href="../man3/d2i_X509.html">d2i_X509(3)</a> manual page.</p>
<h1 id="RETURN-VALUES">RETURN VALUES</h1>
<p>d2i_DHparams() returns a valid <b>DH</b> structure or NULL if an error occurred.</p>
<p>i2d_DHparams() returns the length of encoded data on success or a value which is less than or equal to 0 on error.</p>
<h1 id="SEE-ALSO">SEE ALSO</h1>
<p><a href="../man3/d2i_X509.html">d2i_X509(3)</a></p>
<h1 id="COPYRIGHT">COPYRIGHT</h1>
<p>Copyright 2000-2020 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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