centos man page for gnutls_x509_crt_get_authority_key_id

gnutls_x509_crt_get_authority_key_id(3) 			      gnutls				   gnutls_x509_crt_get_authority_key_id(3)

NAME
       gnutls_x509_crt_get_authority_key_id - API function

SYNOPSIS
       #include <gnutls/x509.h>

       int gnutls_x509_crt_get_authority_key_id(gnutls_x509_crt_t cert, void * id, size_t * id_size, unsigned int * critical);

ARGUMENTS
       gnutls_x509_crt_t cert
		   should contain a gnutls_x509_crt_t structure

       void * id   The place where the identifier will be copied

       size_t * id_size
		   Holds the size of the id field.

       unsigned int * critical
		   will be non-zero if the extension is marked as critical (may be null)

DESCRIPTION
       This  function  will  return  the  X.509v3  certificate authority's key identifier.  This is obtained by the X.509 Authority Key identifier
       extension field (2.5.29.35). Note that this function only returns  the  keyIdentifier  field  of  the  extension  and  GNUTLS_E_X509_UNSUP-
       PORTED_EXTENSION,  if  the  extension  contains	the  name  and	serial number of the certificate. In that case gnutls_x509_crt_get_author-
       ity_key_gn_serial() may be used.

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

REPORTING BUGS
       Report bugs to <bug-gnutls@gnu.org>.
       General guidelines for reporting bugs: http://www.gnu.org/gethelp/
       GnuTLS home page: http://www.gnu.org/software/gnutls/

COPYRIGHT
       Copyright (C) 2012 Free Software Foundation, Inc..
       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
       The full documentation for gnutls is maintained as a Texinfo manual.  If the info and gnutls programs are properly installed at your  site,
       the command

	      info gnutls

       should give you access to the complete manual.  As an alternative you may obtain the manual from:

	      http://www.gnu.org/software/gnutls/manual/

gnutls								      3.1.15				   gnutls_x509_crt_get_authority_key_id(3)