NAME

       gnutls_x509_ext_import_key_usage - API function

SYNOPSIS

       #include <gnutls/x509-ext.h>

       int   gnutls_x509_ext_import_key_usage(const   gnutls_datum_t   *   ext,  unsigned  int  *
       key_usage);

ARGUMENTS

       const gnutls_datum_t * ext
                   the DER encoded extension data

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

DESCRIPTION

       This function will return certificate's key usage, by reading the DER data of the keyUsage
       X.509   extension   (2.5.29.15).   The   key   usage   value  will  ORed  values  of  the:
       GNUTLS_KEY_DIGITAL_SIGNATURE,   GNUTLS_KEY_NON_REPUDIATION,   GNUTLS_KEY_KEY_ENCIPHERMENT,
       GNUTLS_KEY_DATA_ENCIPHERMENT,      GNUTLS_KEY_KEY_AGREEMENT,     GNUTLS_KEY_KEY_CERT_SIGN,
       GNUTLS_KEY_CRL_SIGN, GNUTLS_KEY_ENCIPHER_ONLY, GNUTLS_KEY_DECIPHER_ONLY.

RETURNS

       the certificate key usage, or a negative error code in case  of  parsing  error.   If  the
       certificate  does not contain the keyUsage extension GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE
       will be returned.

SINCE

       3.3.0

REPORTING BUGS

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

COPYRIGHT

       Copyright © 2001-2022 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/