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| 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 | } | |
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