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issrg.test.ds.TestDS.testIssuing issrg.test.ds.TestDS.testIssuing | 1 PASS | |
1 | /* | |
2 | * Copyright (c) 2000-2005, University of Salford | |
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 | * Neither the name of the University of Salford 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 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
29 | * POSSIBILITY OF SUCH DAMAGE. | |
30 | */ | |
31 | ||
32 | package issrg.pba.rbac; | |
33 | ||
34 | /** | |
35 | * This class takes an issrg.security.Verifier object and lets do simple | |
36 | * signature verification. Generally, it gets the signer's Public Key | |
37 | * Certificates and applies them in turn. If any of them succeeds, the | |
38 | * signature verification succeeds. | |
39 | * | |
40 | * @author A Otenko | |
41 | * @version 1.0 | |
42 | */ | |
43 | ||
44 | public class SimpleSignatureVerifier implements issrg.pba.rbac.SignatureVerifier { | |
45 | ||
46 | private issrg.security.Verifier sv = null; | |
47 | ||
48 | 0 | protected SimpleSignatureVerifier() { |
49 | } | |
50 | ||
51 | /** | |
52 | * This constructor builds a SimpleSignatureVerifier given a Verifier. | |
53 | */ | |
54 | 4 | public SimpleSignatureVerifier(issrg.security.Verifier verifier){ |
55 | 4 | sv = verifier; |
56 | } | |
57 | ||
58 | /** | |
59 | * This method checks if there is any Public Key Certificate that can verify | |
60 | * the digital signature. | |
61 | * | |
62 | * @param data - the byte array that has been signed | |
63 | * @param signature - the byte array of the digital signature | |
64 | * @param algID - the signature algorithm identifier; normally it is a | |
65 | * standard algorithm identifier (e.g. an OID), but can be an | |
66 | * implementation-specific identifier, if the Verifier can understand it | |
67 | * @param signer - the TokenLocator pointing to the signer's entry with | |
68 | * Public Key Certificates | |
69 | */ | |
70 | 1009 | public boolean checkSignature(byte [] data, byte [] signature, String algID, issrg.utils.repository.TokenLocator signer) throws issrg.pba.rbac.PkiException { |
71 | 1009 | try{ |
72 | 1009 | java.security.cert.X509Certificate[] certs = sv.getVerificationCertificates(signer); |
73 | ||
74 | //System.out.println("got "+certs.length+" signature validation PKCs"); //************* | |
75 | ||
76 | 1009 | if (certs!=null){ |
77 | 1009 | for (int i=0; i<certs.length; i++){ |
78 | //System.out.println("PKC["+i+"] sigAlgOID="+certs[i].getSigAlgOID()+"; actual signature alg OID="+algID); //************* | |
79 | //if (certs[i].getSigAlgOID().equals(algID)){ // looking for particular PKCs only (with the right algID) | |
80 | 1009 | if (signer.getEntry().getEntryName().equals(certs[i].getSubjectDN())){ // make sure the PKC belongs to the signer |
81 | 1009 | if (sv.verify(data, signature, algID, new java.security.cert.X509Certificate[]{certs[i]})){ // but there can be several PKCs with the same aldID; so try all of them, until the signature matches |
82 | //System.out.println("signature verified"); //************* | |
83 | 1009 | return true; |
84 | } | |
85 | //System.out.println("signature didn't verify"); //************* | |
86 | } | |
87 | } | |
88 | } | |
89 | ||
90 | 0 | return false; |
91 | }catch (Throwable th){ | |
92 | //System.out.println("Exception has been thrown: "+th.getMessage()); //************* | |
93 | //th.printStackTrace(); //************ | |
94 | 0 | throw new PkiException(th.getMessage(), th); |
95 | } | |
96 | } | |
97 | } | |
98 |
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