suse man page for gnutls_x509_crt_get_key_purpose_oid

gnutls_x509_crt_get_key_purpose_oid(3)				      gnutls				    gnutls_x509_crt_get_key_purpose_oid(3)

NAME
       gnutls_x509_crt_get_key_purpose_oid - This function returns the Certificate's key purpose OIDs

SYNOPSIS
       #include <gnutls/x509.h>

       int gnutls_x509_crt_get_key_purpose_oid(gnutls_x509_crt_t cert, int indx, void * oid, size_t * sizeof_oid, unsigned int * critical);

ARGUMENTS
       gnutls_x509_crt_t cert
		   should contain a gnutls_x509_crt_t structure

       int indx    This specifies which OID to return. Use zero to get the first one.

       void * oid  a pointer to a buffer to hold the OID (may be null)

       size_t * sizeof_oid
		   initially holds the size of oid

       unsigned int * critical
		   output flag to indicate criticality of extension

DESCRIPTION
       This  function  will  extract  the  key purpose OIDs of the Certificate specified by the given index.  These are stored in the Extended Key
       Usage extension (2.5.29.37) See the GNUTLS_KP_* definitions for human readable names.

       If oid is null then only the size will be filled.

RETURNS
       GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough, and in that case the *sizeof_oid will be updated with the  required
       size.  On success 0 is returned.

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 (C) 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								       2.8.6				    gnutls_x509_crt_get_key_purpose_oid(3)