gnutls_x509_ext_export_key_usage − API function
#include <gnutls/x509-ext.h>
int gnutls_x509_ext_export_key_usage(unsigned int usage, gnutls_datum_t * ext);
unsigned int usage
an ORed sequence of the GNUTLS_KEY_* elements.
gnutls_datum_t * ext
The DER−encoded extension data; must be freed using gnutls_free().
This function will convert the keyUsage bit string to a DER encoded PKIX extension. The ext data will be allocated using gnutls_malloc().
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.
3.3.0
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