XMLSignatureVerifier | Line # 65 | 20 | 6 | 0% |
0.0
|
No Tests | |||
1 | /* | |
2 | * Copyright (c) 2006-7, University of Kent | |
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 are met: | |
7 | * | |
8 | * Redistributions of source code must retain the above copyright notice, this | |
9 | * list of conditions and the following disclaimer. | |
10 | * | |
11 | * Redistributions in binary form must reproduce the above copyright notice, | |
12 | * this list of conditions and the following disclaimer in the documentation | |
13 | * and/or other materials provided with the distribution. | |
14 | * | |
15 | * 1. Neither the name of the University of Kent nor the names of its | |
16 | * contributors may be used to endorse or promote products derived from this | |
17 | * software without specific prior written permission. | |
18 | * | |
19 | * 2. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
22 | * PURPOSE ARE DISCLAIMED. | |
23 | * | |
24 | * 3. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
25 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
31 | * POSSIBILITY OF SUCH DAMAGE. | |
32 | * | |
33 | * 4. YOU AGREE THAT THE EXCLUSIONS IN PARAGRAPHS 2 AND 3 ABOVE ARE REASONABLE | |
34 | * IN THE CIRCUMSTANCES. IN PARTICULAR, YOU ACKNOWLEDGE (1) THAT THIS | |
35 | * SOFTWARE HAS BEEN MADE AVAILABLE TO YOU FREE OF CHARGE, (2) THAT THIS | |
36 | * SOFTWARE IS NOT "PRODUCT" QUALITY, BUT HAS BEEN PRODUCED BY A RESEARCH | |
37 | * GROUP WHO DESIRE TO MAKE THIS SOFTWARE FREELY AVAILABLE TO PEOPLE WHO WISH | |
38 | * TO USE IT, AND (3) THAT BECAUSE THIS SOFTWARE IS NOT OF "PRODUCT" QUALITY | |
39 | * IT IS INEVITABLE THAT THERE WILL BE BUGS AND ERRORS, AND POSSIBLY MORE | |
40 | * SERIOUS FAULTS, IN THIS SOFTWARE. | |
41 | * | |
42 | * 5. This license is governed, except to the extent that local laws | |
43 | * necessarily apply, by the laws of England and Wales. | |
44 | */ | |
45 | /* | |
46 | * XMLSignatureVerifier.java | |
47 | * | |
48 | * Created on 18 December 2007, 00:37 | |
49 | * | |
50 | * To change this template, choose Tools | Template Manager | |
51 | * and open the template in the editor. | |
52 | */ | |
53 | ||
54 | package issrg.pba.rbac; | |
55 | ||
56 | import java.security.MessageDigest; | |
57 | import java.security.DigestException; | |
58 | import java.security.NoSuchAlgorithmException; | |
59 | ||
60 | import org.apache.log4j.*; | |
61 | /** | |
62 | * | |
63 | * @author Linying Su | |
64 | */ | |
65 | public class XMLSignatureVerifier extends SimpleSignatureVerifier { | |
66 | ||
67 | private static Logger logger = Logger.getLogger(XMLSignatureVerifier.class.getName()); | |
68 | ||
69 | /** Creates a new instance of XMLSignatureVerifier */ | |
70 | 0 | public XMLSignatureVerifier() { |
71 | 0 | super(); |
72 | } | |
73 | ||
74 | 0 | public XMLSignatureVerifier(issrg.security.Verifier verifier){ |
75 | 0 | super(verifier); |
76 | } | |
77 | ||
78 | /** | |
79 | * @param data is the to be digested data. | |
80 | * @param digestVal is the digest value. | |
81 | * @param digestMethod is the digest method. | |
82 | */ | |
83 | ||
84 | 0 | public boolean referenceValidation(byte[] data, byte[] digestVal, String digestMethod) { |
85 | 0 | byte[] digested = null; |
86 | 0 | try { |
87 | 0 | digested = this.digest(data,digestMethod); |
88 | } catch (DigestException de) { | |
89 | 0 | logger.debug("error: "+de); |
90 | 0 | return false; |
91 | } | |
92 | 0 | if (digested.length != digestVal.length) return false; |
93 | 0 | for (int i=0; i<digested.length; i++) { |
94 | 0 | if (digested[i] == digestVal[i]) continue; |
95 | 0 | else return false; |
96 | } | |
97 | 0 | return true; |
98 | } | |
99 | ||
100 | 0 | private byte[] digest(byte[] data, String method) throws DigestException { |
101 | ||
102 | 0 | try { |
103 | 0 | MessageDigest md = MessageDigest.getInstance(method); |
104 | 0 | md.update(data); |
105 | 0 | byte[] toDigest = md.digest(); |
106 | 0 | return toDigest; |
107 | } catch (NoSuchAlgorithmException ne) { | |
108 | 0 | throw new DigestException("couldn't make digest due to the wrong digest method"); |
109 | } | |
110 | } | |
111 | } |
|