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Java > Open Source Codes > HTTPClient > HashVerifier


1 /*
2  * @(#)HashVerifier.java 0.3-2 18/06/1999
3  *
4  * This file is part of the HTTPClient package
5  * Copyright (C) 1996-1999 Ronald Tschalär
6  *
7  * This library is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2 of the License, or (at your option) any later version.
11  *
12  * This library is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this library; if not, write to the Free
19  * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307, USA
21  *
22  * For questions, suggestions, bug-reports, enhancement-requests etc.
23  * I may be contacted at:
24  *
25  * ronald@innovation.ch
26  *
27  */
28
29 package HTTPClient;
30
31
32 /**
33  * This interface defines a hash verifier.
34  *
35  * @version 0.3-2 18/06/1999
36  * @author Ronald Tschalär
37  */
38
39 interface HashVerifier
40 {
41     /**
42      * This method is invoked when a digest of a stream has been calculated.
43      * It must verify that the hash (or some function of it) is correct and
44      * throw an IOException if it is not.
45      *
46      * @param hash the calculated hash
47      * @param len the number of bytes read from the stream
48      * @exception IOException if the verification fails.
49      */
50     public void verifyHash(byte[] hash, long len) throws java.io.IOException JavaDoc;
51 }
52
53
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