@deftypefun {const char *} {gnutls_ecc_curve_get_oid} (gnutls_ecc_curve_t @var{curve}) @var{curve}: is an ECC curve Convert a @code{gnutls_ecc_curve_t} value to its object identifier. @strong{Returns:} a string that contains the OID of the specified curve or @code{NULL} . @strong{Since:} 3.4.3 @end deftypefun