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gnutls_x509_crt_get_subject_key_id(3) — Linux manual page

gnutls_x509_c...ubject_key_id(3)  gnutlsgnutls_x509_c...ubject_key_id(3)

NAME        top

       gnutls_x509_crt_get_subject_key_id - API function

SYNOPSIS        top

#include <gnutls/x509.h>int gnutls_x509_crt_get_subject_key_id(gnutls_x509_crt_tcert,void *ret, size_t *ret_size, unsigned int *critical);

ARGUMENTS        top

       gnutls_x509_crt_t cert                   should contain agnutls_x509_crt_ttype       void * ret  The place where the identifier will be copied       size_t * ret_size                   Holds the size of the result field.       unsigned int * critical                   will be non-zero if the extension is marked as                   critical (may be null)

DESCRIPTION        top

       This function will return the X.509v3 certificate's subject key       identifier.  This is obtained by the X.509 Subject Key identifier       extension field (2.5.29.14).

RETURNS        top

       On success,GNUTLS_E_SUCCESS(0) is returned,GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLEif the extension is not       present, otherwise a negative error value.

REPORTING BUGS        top

       Report bugs to <bugs@gnutls.org>.       Home page:https://www.gnutls.org

COPYRIGHT        top

       Copyright © 2001-2023 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 forgnutlsis maintained as a Texinfo       manual.  If the /usr/share/doc/gnutls/ directory does not contain       the HTML form visithttps://www.gnutls.org/manual/

COLOPHON        top

       This page is part of theGnuTLS (GnuTLS Transport Layer Security       Library) project.  Information about the project can be found at       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this       manual page, send it to bugs@gnutls.org.  This page was obtained       from the tarball fetched from       ⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2025-08-11.  If you       discover any rendering problems in this HTML version of the page,       or you believe there is a better or more up-to-date source for the       page, or you have corrections or improvements to the information       in this COLOPHON (which isnot part of the original manual page),       send a mail to man-pages@man7.orggnutls                            3.8.10gnutls_x509_c...ubject_key_id(3)

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