/* ===============================================================================
*
* Part of the InfoGlue Content Management Platform (www.infoglue.org)
*
* ===============================================================================
*
* Copyright (C)
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2, as published by the
* Free Software Foundation. See the file LICENSE.html for more information.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY, including the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc. / 59 Temple
* Place, Suite 330 / Boston, MA 02111-1307 / USA.
*
* ===============================================================================
*/
package org.infoglue.cms.util;
import java.util.Random;
/**
* Utility class for generating passwords.
*
* @author <a href="mailto:meat_for_the_butcher@yahoo.com">Patrik Nyborg</a>
*/
public class PasswordGenerator
{
// --- [Constants] -----------------------------------------------------------
/**
* We want to have a random string with a length of 10 characters.
* Since we encode it base-36, we modulo the random number with this value.
*/
private static final long MAX_RANDOM_LENGTH = 3656158440062976L; // 36 ** 10
// --- [Attributes] ----------------------------------------------------------
// Used for generating a stream of pseudorandom numbers.
private static final Random random = new Random();
// --- [Static] --------------------------------------------------------------
// --- [Constructors] --------------------------------------------------------
/**
* Static class; don't allow instantiation.
*/
private PasswordGenerator() {}
// --- [Public] --------------------------------------------------------------
/**
* Generates a random 10 characters password.
*
* @return the generated password.
*/
public static synchronized String generate()
{
return Long.toString(Math.abs(random.nextLong()) % MAX_RANDOM_LENGTH, Character.MAX_RADIX);
}
// --- [X implementation] ----------------------------------------------------
// --- [X Overrides] ---------------------------------------------------------
// --- [Package protected] ---------------------------------------------------
// --- [Private] -------------------------------------------------------------
// --- [Protected] -----------------------------------------------------------
// --- [Inner classes] -------------------------------------------------------
}