NAME
gnutls_x509_crt_get_key_usage - This function returns the certificate's key usage
SYNOPSIS
#include <gnutls/x509.h>
I int gnutls_x509_crt_get_key_usage(gnutls_x509_crt_t cert , unsigned int * key_usage , unsigned int * critical );
ARGUMENTS
"gnutls_x509_crt_t
should contain a gnutls_x509_crt_t structure
"unsigned
where the key usage bits will be stored
"unsigned
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.
A negative value may be returned 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>.
COPYRIGHT
Copyright 2006 Free Software Foundation.
Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.
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.
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