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// Copyright 2011 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import guuid ""
// Random returns a Random (Version 4) UUID or panics.
// The strength of the UUIDs is based on the strength of the crypto/rand
// package.
// A note about uniqueness derived from the UUID Wikipedia entry:
// Randomly generated UUIDs have 122 random bits. One's annual risk of being
// hit by a meteorite is estimated to be one chance in 17 billion, that
// means the probability is about 0.00000000006 (6 × 10−11),
// equivalent to the odds of creating a few tens of trillions of UUIDs in a
// year and having one duplicate.
func NewRandom() UUID {
if gu, err := guuid.NewRandom(); err == nil {
return UUID(gu[:])
return nil