gnutls_x509_crt_get_extension_data(3) — Linux manual page



NAME         top

       gnutls_x509_crt_get_extension_data - API function

SYNOPSIS         top

       #include <gnutls/x509.h>

       int gnutls_x509_crt_get_extension_data(gnutls_x509_crt_t cert,
       unsigned indx, void * data, size_t * sizeof_data);

ARGUMENTS         top

       gnutls_x509_crt_t cert
                   should contain a gnutls_x509_crt_t type

       unsigned indx
                   Specifies which extension OID to send. Use (0) to get
                   the first one.

       void * data a pointer to a structure to hold the data (may be

       size_t * sizeof_data
                   initially holds the size of  data

DESCRIPTION         top

       This function will return the requested extension data in the
       certificate.  The extension data will be stored in the provided

       Use gnutls_x509_crt_get_extension_info() to extract the OID and
       critical flag.  Use gnutls_x509_crt_get_extension_by_oid()
       instead, if you want to get data indexed by the extension OID
       rather than sequence.

RETURNS         top

       On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a
       negative error code is returned.  If you have reached the last
       extension available GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be

REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001- Free Software Foundation, Inc., and others.
       Copying and distribution of this file, with or without
       modification, are permitted in any medium without royalty
       provided the copyright notice and this notice are preserved.

SEE ALSO         top

       The full documentation for gnutls is maintained as a Texinfo
       manual.  If the /usr/share/doc/gnutls/ directory does not contain
       the HTML form visit 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at
       ⟨⟩.  If you have a bug report for this
       manual page, send it to  This page was obtained
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       ⟨⟩ on 2023-06-23.  If you
       discover any rendering problems in this HTML version of the page,
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gnutls                            3.g8n.u0tls_x509_crt_get_extension_data(3)