gnutls_x509_crt_get_key_usage

Langue: en

Autres versions - même langue

Version: 2.8.6 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

gnutls_x509_crt_get_key_usage - return the certificate's key usage

SYNOPSIS

#include <gnutls/x509.h>

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

ARGUMENTS

gnutls_x509_crt_t cert
should contain a gnutls_x509_crt_t structure
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

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

the certificate key usage, or a negative value 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

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 © 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.