/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.acegisecurity.providers.dao.salt;

 import org.acegisecurity.providers.dao.SaltSource;

 import org.acegisecurity.userdetails.UserDetails;

 import org.springframework.beans.factory.InitializingBean;

 /**

  * Uses a static system-wide <code>String</code> as the salt.<P>Does not supply a different salt for each {@link

  * org.acegisecurity.userdetails.User}. This means users sharing the same password will still have the same digested

  * password. Of benefit is the digested passwords will at least be more protected than if stored without any salt.</p>

  *

  * @author Ben Alex

  * @version $Id: SystemWideSaltSource.java 1519 2006-05-29 15:06:32Z benalex $

  */

 public class SystemWideSaltSource implements SaltSource, InitializingBean {

     //~ Instance fields ================================================================================================

     private String systemWideSalt;

     //~ Methods ========================================================================================================

     public void afterPropertiesSet() throws Exception {

         if ((this.systemWideSalt == null) || "".equals(this.systemWideSalt)) {

             throw new IllegalArgumentException("A systemWideSalt must be set");

         }

     }

     public Object getSalt(UserDetails user) {

         return this.systemWideSalt;

     }

     public String getSystemWideSalt() {

         return this.systemWideSalt;

     }

     public void setSystemWideSalt(String systemWideSalt) {

         this.systemWideSalt = systemWideSalt;

     }

 }