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<title>SSL_CTX_set_cert_store</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="#NOTES">NOTES</a></li>
  <li><a href="#RESTRICTIONS">RESTRICTIONS</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>
</ul>

<h1 id="NAME">NAME</h1>

<p>SSL_CTX_set_cert_store, SSL_CTX_set1_cert_store, SSL_CTX_get_cert_store - manipulate X509 certificate verification storage</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<pre><code> #include &lt;openssl/ssl.h&gt;

 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store);
 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store);
 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx);</code></pre>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>SSL_CTX_set_cert_store() sets/replaces the certificate verification storage of <b>ctx</b> to/with <b>store</b>. If another X509_STORE object is currently set in <b>ctx</b>, it will be X509_STORE_free()ed.</p>

<p>SSL_CTX_set1_cert_store() sets/replaces the certificate verification storage of <b>ctx</b> to/with <b>store</b>. The <b>store</b>&#39;s reference count is incremented. If another X509_STORE object is currently set in <b>ctx</b>, it will be X509_STORE_free()ed.</p>

<p>SSL_CTX_get_cert_store() returns a pointer to the current certificate verification storage.</p>

<h1 id="NOTES">NOTES</h1>

<p>In order to verify the certificates presented by the peer, trusted CA certificates must be accessed. These CA certificates are made available via lookup methods, handled inside the X509_STORE. From the X509_STORE the X509_STORE_CTX used when verifying certificates is created.</p>

<p>Typically the trusted certificate store is handled indirectly via using <a href="../man3/SSL_CTX_load_verify_locations.html">SSL_CTX_load_verify_locations(3)</a>. Using the SSL_CTX_set_cert_store() and SSL_CTX_get_cert_store() functions it is possible to manipulate the X509_STORE object beyond the <a href="../man3/SSL_CTX_load_verify_locations.html">SSL_CTX_load_verify_locations(3)</a> call.</p>

<p>Currently no detailed documentation on how to use the X509_STORE object is available. Not all members of the X509_STORE are used when the verification takes place. So will e.g. the verify_callback() be overridden with the verify_callback() set via the <a href="../man3/SSL_CTX_set_verify.html">SSL_CTX_set_verify(3)</a> family of functions. This document must therefore be updated when documentation about the X509_STORE object and its handling becomes available.</p>

<p>SSL_CTX_set_cert_store() does not increment the <b>store</b>&#39;s reference count, so it should not be used to assign an X509_STORE that is owned by another SSL_CTX.</p>

<p>To share X509_STOREs between two SSL_CTXs, use SSL_CTX_get_cert_store() to get the X509_STORE from the first SSL_CTX, and then use SSL_CTX_set1_cert_store() to assign to the second SSL_CTX and increment the reference count of the X509_STORE.</p>

<h1 id="RESTRICTIONS">RESTRICTIONS</h1>

<p>The X509_STORE structure used by an SSL_CTX is used for verifying peer certificates and building certificate chains, it is also shared by every child SSL structure. Applications wanting finer control can use functions such as SSL_CTX_set1_verify_cert_store() instead.</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>SSL_CTX_set_cert_store() does not return diagnostic output.</p>

<p>SSL_CTX_set1_cert_store() does not return diagnostic output.</p>

<p>SSL_CTX_get_cert_store() returns the current setting.</p>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man7/ssl.html">ssl(7)</a>, <a href="../man3/SSL_CTX_load_verify_locations.html">SSL_CTX_load_verify_locations(3)</a>, <a href="../man3/SSL_CTX_set_verify.html">SSL_CTX_set_verify(3)</a></p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the OpenSSL license (the &quot;License&quot;). 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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