1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.util;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.util.Base64;
28  import com.liferay.portal.kernel.util.Digester;
29  
30  import java.io.UnsupportedEncodingException;
31  
32  import java.security.MessageDigest;
33  import java.security.NoSuchAlgorithmException;
34  
35  import org.apache.commons.codec.binary.Hex;
36  
37  /**
38   * <a href="DigesterImpl.java.html"><b><i>View Source</i></b></a>
39   *
40   * @author Brian Wing Shun Chan
41   *
42   */
43  public class DigesterImpl implements Digester {
44  
45      public String digest(String text) {
46          return digest(Digester.DIGEST_ALGORITHM, text);
47      }
48  
49      public String digest(String algorithm, String text) {
50          MessageDigest digester = null;
51  
52          try{
53              digester = MessageDigest.getInstance(algorithm);
54  
55              digester.update(text.getBytes(Digester.ENCODING));
56          }
57          catch (NoSuchAlgorithmException nsae) {
58              _log.error(nsae, nsae);
59          }
60          catch (UnsupportedEncodingException uee) {
61              _log.error(uee, uee);
62          }
63  
64          byte[] bytes = digester.digest();
65  
66          if (_BASE_64) {
67              return Base64.encode(bytes);
68          }
69          else {
70              return new String(Hex.encodeHex(bytes));
71          }
72      }
73  
74      private static final boolean _BASE_64 =
75          PropsValues.PASSWORDS_DIGEST_ENCODING.equals("base64");
76  
77      private static Log _log = LogFactoryUtil.getLog(Digester.class);
78  
79  }