NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON

gnutls_x509_crt_get_key_usage(3)   gnutls   gnutls_x509_crt_get_key_usage(3)

NAME         top

       gnutls_x509_crt_get_key_usage - API function

SYNOPSIS         top

       #include <gnutls/x509.h>

       int gnutls_x509_crt_get_key_usage(gnutls_x509_crt_t cert, unsigned
       int * key_usage, unsigned int * critical);

ARGUMENTS         top

       gnutls_x509_crt_t cert
                   should contain a gnutls_x509_crt_t type

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

       unsigned int * critical
                   will be non-zero if the extension is marked as critical

DESCRIPTION         top

       This function will return certificate's key usage, by reading 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         top

       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.

REPORTING BUGS         top

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

COPYRIGHT         top

       Copyright © 2001-2017 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         top

       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/ 

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this manual
       page, send it to bugs@gnutls.org..  This page was obtained from the
       tarball gnutls-3.5.9.tar.xz fetched from 
       ⟨http://www.gnutls.org/download.html⟩ on 2017-05-03.  If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

gnutls                              3.5.9   gnutls_x509_crt_get_key_usage(3)