Function bignKeyWrap 

pub unsafe extern "C" fn bignKeyWrap(
    token: *mut octet,
    params: *const bign_params,
    key: *const octet,
    len: usize,
    header: *const octet,
    pubkey: *const octet,
    rng: gen_i,
    rng_state: *mut c_void,
) -> err_t