01: /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
02: *
03: * Licensed under the Apache License, Version 2.0 (the "License");
04: * you may not use this file except in compliance with the License.
05: * You may obtain a copy of the License at
06: *
07: * http://www.apache.org/licenses/LICENSE-2.0
08: *
09: * 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.acegisecurity.providers.dao;
17:
18: import org.acegisecurity.userdetails.UserDetails;
19:
20: /**
21: * Provides alternative sources of the salt to use for encoding passwords.
22: *
23: * @author Ben Alex
24: * @version $Id: SaltSource.java 1784 2007-02-24 21:00:24Z luke_t $
25: */
26: public interface SaltSource {
27: //~ Methods ========================================================================================================
28:
29: /**
30: * Returns the salt to use for the indicated user.
31: *
32: * @param user from the <code>AuthenticationDao</code>
33: *
34: * @return the salt to use for this <code>UserDetails</code>
35: */
36: Object getSalt(UserDetails user);
37: }
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