gnutls_x509_ext_import_key_usage(3)

API function

Section 3 gnutls-doc bookworm source

Description

gnutls_x509_ext_import_key_usage

NAME

gnutls_x509_ext_import_key_usage - API function

SYNOPSIS

#include <gnutls/x509-ext.h>

int gnutls_x509_ext_import_key_usage(const gnutls_datum_t * ext, unsigned int * key_usage);

ARGUMENTS

const gnutls_datum_t * ext

the DER encoded extension data

unsigned int * key_usage

where the key usage bits will be stored

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.

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

3.3.0

REPORTING BUGS

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

COPYRIGHT

Copyright © 2001- 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.