gnutls_x509_crq_get_key_usage man page

gnutls_x509_crq_get_key_usage — API function

Synopsis

#include <gnutls/x509.h>

int gnutls_x509_crq_get_key_usage(gnutls_x509_crq_t crq, unsigned int * key_usage, unsigned int * critical);

Arguments

gnutls_x509_crq_t crq
should contain a gnutls_x509_crq_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

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 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

2.8.0

Reporting Bugs

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

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/

Info

3.5.5 gnutls gnutls