pub unsafe extern "C" fn rsa_validate_params(
    N: *const mpi,
    P: *const mpi,
    Q: *const mpi,
    D: *const mpi,
    E: *const mpi,
    f_rng: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: *mut c_uchar, arg3: size_t) -> c_int>,
    p_rng: *mut c_void
) -> c_int