NAME

       gnutls_openpgp_crt_get_subkey_usage - API function

SYNOPSIS

       #include <gnutls/openpgp.h>

       int   gnutls_openpgp_crt_get_subkey_usage(gnutls_openpgp_crt_t   key,  unsigned  int  idx,
       unsigned int * key_usage);

ARGUMENTS

       gnutls_openpgp_crt_t key
                   should contain a gnutls_openpgp_crt_t type

       unsigned int idx
                   the subkey index

       unsigned int * key_usage
                   where the key usage bits will be stored

DESCRIPTION

       This function will return certificate's key usage, by checking the key algorithm.  The key
       usage     value     will     ORed     values     of     GNUTLS_KEY_DIGITAL_SIGNATURE    or
       GNUTLS_KEY_KEY_ENCIPHERMENT.

       A negative error code may be returned in case of parsing error.

RETURNS

       key usage value.

SINCE

       2.4.0

REPORTING BUGS

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

COPYRIGHT

       Copyright © 2001-2021 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

       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

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