Set password salt : MD5 Message Digest algorithm  « Security « Java Tutorial

1. Java Tutorial
2. Security
3. MD5 Message Digest algorithm

import java.security.MessageDigest;
import java.util.Random;

public class MainClass {
  public static void main(String args[]) throws Exception {
    String name = "name";
    String passwd = "password";
    Random rand = new Random();
    byte[] salt = new byte[12];
    rand.nextBytes(salt);
    MessageDigest m = MessageDigest.getInstance("MD5");
    m.update(salt);
    m.update(passwd.getBytes("UTF8"));
    byte s[] = m.digest();
    String result = "";
    for (int i = 0; i < s.length; i++) {
      result += Integer.toHexString((0x000000ff & s[i]) | 0xffffff00).substring(6);
    }
    System.out.println(name);
    for (int i = 0; i < salt.length; i++) {
      System.out.print(salt[i] + ",");
    }
    System.out.println(result);
  }
}
/*name
72,83,-8,78,-82,125,0,-37,-116,-83,-72,27,460a21b49082e5268a4016bfa2e2885c*/