gnutls_x509_crt_get_key_usage

gnutls_x509_crt_get_key_usage(3)     gnutls     gnutls_x509_crt_get_key_usage(3)



NAME
       gnutls_x509_crt_get_key_usage - API function

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 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
       zero on success, 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
       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org


COPYRIGHT
       Copyright © 2001-2020 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

       https://www.gnutls.org/manual/

gnutls                               3.6.13     gnutls_x509_crt_get_key_usage(3)