SYNOPSIS
#include <gnutls/openpgp.h>int gnutls_openpgp_crt_get_subkey_usage(gnutls_openpgp_crt_t key, unsigned int idx, unsigned int * key_usage);
ARGUMENTS
- gnutls_openpgp_crt_t key
- should contain a gnutls_openpgp_crt_t type
- unsigned int idx
- the subkey index
- unsigned int * key_usage
- where the key usage bits will be stored
DESCRIPTION
This function will return certificate's key usage, by checking the key algorithm. The key usage value will ORed values of GNUTLS_KEY_DIGITAL_SIGNATURE or GNUTLS_KEY_KEY_ENCIPHERMENT.A negative error code may be returned in case of parsing error.
RETURNS
key usage value.SINCE
2.4.0COPYRIGHT
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