Функции API (API function)
Имя (Name)
gnutls_x509_ext_import_key_usage - API function
Синопсис (Synopsis)
#include <gnutls/x509-ext.h>
int gnutls_x509_ext_import_key_usage(const gnutls_datum_t * ext,
unsigned int * key_usage);
Аргументы (Arguments)
const gnutls_datum_t * ext
the DER encoded extension data
unsigned int * key_usage
where the key usage bits will be stored
Описание (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.
Возвращаемое значение (Return value)
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.
Сообщение об ошибках (Reporting bugs)
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
Смотри также (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
https://www.gnutls.org/manual/
