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Edit File: X509_EXTENSION_get_object.html

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<title>X509_EXTENSION_set_object</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="#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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X509_EXTENSION_set_object, X509_EXTENSION_set_critical, X509_EXTENSION_set_data, X509_EXTENSION_create_by_NID, X509_EXTENSION_create_by_OBJ, X509_EXTENSION_get_object, X509_EXTENSION_get_critical, X509_EXTENSION_get_data - extension utility functions

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

<pre><code> int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj);
 int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit);
 int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data);

X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex,
                                              int nid, int crit,
                                              ASN1_OCTET_STRING *data);
 X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
                                              const ASN1_OBJECT *obj, int crit,
                                              ASN1_OCTET_STRING *data);

ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex);
 int X509_EXTENSION_get_critical(const X509_EXTENSION *ex);
 ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ne);</code></pre>

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

X509_EXTENSION_set_object() sets the extension type of ex to obj. The obj pointer is duplicated internally so obj should be freed up after use.

X509_EXTENSION_set_critical() sets the criticality of ex to crit. If crit is zero the extension in non-critical otherwise it is critical.

X509_EXTENSION_set_data() sets the data in extension ex to data. The data pointer is duplicated internally.

X509_EXTENSION_create_by_NID() creates an extension of type nid, criticality crit using data data. The created extension is returned and written to *ex reusing or allocating a new extension if necessary so *ex should either be NULL or a valid X509_EXTENSION structure it must not be an uninitialised pointer.

X509_EXTENSION_create_by_OBJ() is identical to X509_EXTENSION_create_by_NID() except it creates and extension using obj instead of a NID.

X509_EXTENSION_get_object() returns the extension type of ex as an ASN1_OBJECT pointer. The returned pointer is an internal value which must not be freed up.

X509_EXTENSION_get_critical() returns the criticality of extension ex it returns 1 for critical and 0 for non-critical.

X509_EXTENSION_get_data() returns the data of extension ex. The returned pointer is an internal value which must not be freed up.

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

These functions manipulate the contents of an extension directly. Most applications will want to parse or encode and add an extension: they should use the extension encode and decode functions instead such as X509_add1_ext_i2d() and X509_get_ext_d2i().

The data associated with an extension is the extension encoding in an ASN1_OCTET_STRING structure.

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

X509_EXTENSION_set_object() X509_EXTENSION_set_critical() and X509_EXTENSION_set_data() return 1 for success and 0 for failure.

X509_EXTENSION_create_by_NID() and X509_EXTENSION_create_by_OBJ() return an X509_EXTENSION pointer or NULL if an error occurs.

X509_EXTENSION_get_object() returns an ASN1_OBJECT pointer.

X509_EXTENSION_get_critical() returns 0 for non-critical and 1 for critical.

X509_EXTENSION_get_data() returns an ASN1_OCTET_STRING pointer.

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

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>.

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