gnutls_x509_crt_set_key_usage − API function
#include <gnutls/x509.h>
int gnutls_x509_crt_set_key_usage(gnutls_x509_crt_t crt, unsigned int usage);
gnutls_x509_crt_t crt
a certificate of type gnutls_x509_crt_t
unsigned int usage
an ORed sequence of the GNUTLS_KEY_* elements.
This function will set the keyUsage certificate extension.
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.
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