1 /*
2 * Copyright (C) 2003-2008 eXo Platform SAS.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Affero General Public License
6 * as published by the Free Software Foundation; either version 3
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see<http://www.gnu.org/licenses/>.
16 */
17 package org.exoplatform.services.wcm.publication;
18
19 /**
20 * This class is responsible to create a unique hashcode for a given message
21 *
22 * @author Benjamin Paillereau - benjamin.paillereau@exoplatform.com
23 * @version 1.0
24 */
25 public class MessageDigester {
26
27 public static String getHash(String message) throws Exception {
28 java.security.MessageDigest msgDigest = java.security.MessageDigest.getInstance("MD5");
29 msgDigest.update(message.getBytes());
30 byte[] aMessageDigest = msgDigest.digest();
31 StringBuffer ticket = new StringBuffer();
32 ticket = new StringBuffer();
33 String tmp = null;
34 for (int i = 0; i < aMessageDigest.length; i++) {
35 tmp = Integer.toHexString(0xFF & aMessageDigest[i]);
36 if (tmp.length() == 2) {
37 ticket.append(tmp);
38 } else {
39 ticket.append("0");
40 ticket.append(tmp);
41 }
42 }
43 return ticket.toString();
44 }
45 }