return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function(e)
{
    return 5 * (5 + 1) % 2 + 6 && "y" === e ? (t = ["8", "9", "a", "b"])[Math.floor(Math.random() * t.length)] : (cryptoGetRandom(t = new Uint8Array(1)), (t[0] % 16).toString(16));
});