1 /*
2 * Copyright (c) 2002-2016, Mairie de Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.plugins.avatarserver.service;
35
36 import fr.paris.lutece.portal.service.util.AppLogService;
37
38 import java.security.MessageDigest;
39 import java.security.NoSuchAlgorithmException;
40
41 /**
42 * Hash Service
43 *
44 */
45 public final class HashService
46 {
47 /** Private constructor */
48 private HashService( )
49 {
50 }
51
52 /**
53 * Calculate the Hash corresponding to the given email
54 *
55 * @param strAvatarEmail
56 * The Email
57 * @return The Hash
58 */
59 public static String getHash( String strAvatarEmail )
60 {
61 String strEmail = strAvatarEmail.toLowerCase( );
62 MessageDigest md;
63
64 try
65 {
66 md = MessageDigest.getInstance( "MD5" );
67
68 byte [ ] hash = md.digest( strEmail.getBytes( ) );
69 StringBuilder sb = new StringBuilder( );
70
71 for ( int i = 0; i < hash.length; i++ )
72 {
73 sb.append( Integer.toString( ( hash [i] & 0xff ) + 0x100, 16 ).substring( 1 ) );
74 }
75
76 return sb.toString( );
77 }
78 catch( NoSuchAlgorithmException ex )
79 {
80 AppLogService.error( "Error getting gravatar : " + ex.getMessage( ), ex );
81 }
82
83 return "";
84 }
85 }