Function randWithDictionary

command/crypto/rand/rand.go:212–243

(dictionary string, length int)

}

func randWithDictionary(dictionary string, length int) error {
	file, err := os.Open(dictionary)
	if err != nil {
		return err
	}
	defer file.Close()

	scanner := bufio.NewScanner(file)
	words := make([]string, 0, 1024)
	for scanner.Scan() {
		words = append(words, strings.TrimSpace(scanner.Text()))
	}
	if err := scanner.Err(); err != nil {
		return err
	}

	var s string

	for i := 0; i < length; i++ {
		bn, err := rand.Int(rand.Reader, big.NewInt(int64(len(words))))
		if err != nil {
			return err
		}
		s += words[bn.Int64()]
		if i != length-1 {
			s += "-"
		}
	}

	fmt.Println(s)
	return nil
}