/*
* 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.springframework.security.authentication.dao;
import org.springframework.security.core.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.springframework.security.core.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
*/
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;
}
/**
* Displays the system wide salt
* @since 4.0
* @return
*/
@Override
public String toString() {
return systemWideSalt;
}
}