1 /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 package org.springframework.security.providers.dao;
17
18 import org.springframework.security.userdetails.UserDetails;
19
20
21 /**
22 * Provides alternative sources of the salt to use for encoding passwords.
23 *
24 * @author Ben Alex
25 * @version $Id: SaltSource.java 2217 2007-10-27 00:45:30Z luke_t $
26 */
27 public interface SaltSource {
28 //~ Methods ========================================================================================================
29
30 /**
31 * Returns the salt to use for the indicated user.
32 *
33 * @param user from the <code>AuthenticationDao</code>
34 *
35 * @return the salt to use for this <code>UserDetails</code>
36 */
37 Object getSalt(UserDetails user);
38 }