Generate a random size string nonce.

Nonce.go

func genNonce(length int) string {
	const charset = "abcdefghijklmnopqrstuvwxyz" +
		"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
	nonce := ""
	for i := 0; i < length; i++ { 
		rand.Seed(time.Now().UnixNano())
		nonce += strings.Split(charset, "")[rand.Intn(len(strings.Split(charset, "")))]
	}
	return strings.ToUpper(nonce)
}