@deftypefun {void} {gnutls_certificate_free_keys} (gnutls_certificate_credentials_t @var{sc})
@var{sc}: is a @code{gnutls_certificate_credentials_t}  type.

This function will delete all the keys and the certificates associated
with the given credentials. This function must not be called when a
TLS negotiation that uses the credentials is in progress.
@end deftypefun