+ s := flag.Int("s", 1<<18, "Space cost, number of hash-sized blocks")
+ t := flag.Int("t", 2, "Time cost, rounds")
+ p := flag.Int("p", 4, "Number of threads")
+ saltHex := flag.String("salt", "deadbabe", "Salt, hexadecimal")
+ passwd := flag.String("passwd", "", "Password")