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NAME

       gnutls_x509_crt_get_authority_key_id   -   This  function  returns  the
       certificate authority’s identifier

SYNOPSIS

       #include <gnutls/x509.h>

       int gnutls_x509_crt_get_authority_key_id(gnutls_x509_crt_t cert, void *
       ret, size_t * ret_size, unsigned int * critical);

ARGUMENTS

       gnutls_x509_crt_t cert
                   should contain a gnutls_x509_crt_t structure

       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

       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.

RETURNS

       On  success,  GNUTLS_E_SUCCESS  is returned, otherwise a negative error
       value.and a negative value in case of an error.

REPORTING BUGS

       Report   bugs   to    <bug-gnutls@gnu.org>.     GnuTLS    home    page:
       http://www.gnu.org/software/gnutls/  General  help  using GNU software:
       http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright © 2008 Free Software Foundation.
       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.

gnutls                               2.gnutls_x509_crt_get_authority_key_id(3)