1 /*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 8076117
27 * @summary EndEntityChecker should not process custom extensions
28 * after PKIX validation
29 */
30
31 import java.io.ByteArrayInputStream;
32 import java.io.File;
33 import java.io.FileInputStream;
34 import java.security.KeyStore;
35 import java.security.cert.CertPathValidatorException;
36 import java.security.cert.Certificate;
37 import java.security.cert.CertificateException;
38 import java.security.cert.CertificateFactory;
39 import java.security.cert.PKIXBuilderParameters;
40 import java.security.cert.PKIXCertPathChecker;
41 import java.security.cert.TrustAnchor;
42 import java.security.cert.X509Certificate;
43 import java.util.Collection;
44 import java.util.HashSet;
45 import java.util.Set;
46 import sun.security.validator.KeyStores;
47 import sun.security.validator.Validator;
48
49
50 public class EndEntityExtensionCheck {
51
52 /*
53 * Owner: CN=TestCA
54 * Issuer: CN=TestCA
55 */
56 private static final String CA =
57 "-----BEGIN CERTIFICATE-----\n" +
58 "MIICgDCCAj2gAwIBAgIEC18hWjALBgcqhkjOOAQDBQAwETEPMA0GA1UEAxMGVGVz\n" +
59 "dENBMB4XDTE1MDQwNzIyMzUyMFoXDTI1MDQwNjIyMzUyMFowETEPMA0GA1UEAxMG\n" +
60 "VGVzdENBMIIBuDCCASwGByqGSM44BAEwggEfAoGBAP1/U4EddRIpUt9KnC7s5Of2\n" +
61 "EbdSPO9EAMMeP4C2USZpRV1AIlH7WT2NWPq/xfW6MPbLm1Vs14E7gB00b/JmYLdr\n" +
62 "mVClpJ+f6AR7ECLCT7up1/63xhv4O1fnxqimFQ8E+4P208UewwI1VBNaFpEy9nXz\n" +
63 "rith1yrv8iIDGZ3RSAHHAhUAl2BQjxUjC8yykrmCouuEC/BYHPUCgYEA9+Gghdab\n" +
64 "Pd7LvKtcNrhXuXmUr7v6OuqC+VdMCz0HgmdRWVeOutRZT+ZxBxCBgLRJFnEj6Ewo\n" +
65 "FhO3zwkyjMim4TwWeotUfI0o4KOuHiuzpnWRbqN/C/ohNWLx+2J6ASQ7zKTxvqhR\n" +
66 "kImog9/hWuWfBpKLZl6Ae1UlZAFMO/7PSSoDgYUAAoGBAJOWy2hVy4iNwsi/idWG\n" +
67 "oksr9IZxQIFR2YavoUmD+rIgfYUpiCihzftDLMMaNYqp9PPxuOyoIPGPbwmKpAs5\n" +
68 "nq6gLwH2lSsN+EwyV2SJ0J26PHiMuRNZWWfKR3cpEqbQVb0CmvqSpj8zYfamPzp7\n" +
69 "eXSWwahzgLCGJM3SgCfDFC0uoyEwHzAdBgNVHQ4EFgQU7tLD8FnWM+r6jBr+mCXs\n" +
70 "8G5yBpgwCwYHKoZIzjgEAwUAAzAAMC0CFQCHCtzC3S0ST0EZBucikVui4WXD8QIU\n" +
71 "L3Oxy6989/FhZlZWJlhqc1ungEQ=\n" +
72 "-----END CERTIFICATE-----";
73
74 /*
75 * Owner: CN=TestEE
76 * Issuer: CN=TestCA
77 * Contains a custom critical extension with OID 1.2.3.4:
78 * #1: ObjectId: 1.2.3.4 Criticality=true
79 * 0000: 00 00
80 */
81 private static final String EE =
82 "-----BEGIN CERTIFICATE-----\n" +
83 "MIICrTCCAmugAwIBAgIELjciKzALBgcqhkjOOAQDBQAwETEPMA0GA1UEAxMGVGVz\n" +
84 "dENBMB4XDTE1MDQwNzIzMDA1OFoXDTE1MDcwNjIzMDA1OFowETEPMA0GA1UEAxMG\n" +
85 "VGVzdEVFMIIBtzCCASwGByqGSM44BAEwggEfAoGBAP1/U4EddRIpUt9KnC7s5Of2\n" +
86 "EbdSPO9EAMMeP4C2USZpRV1AIlH7WT2NWPq/xfW6MPbLm1Vs14E7gB00b/JmYLdr\n" +
87 "mVClpJ+f6AR7ECLCT7up1/63xhv4O1fnxqimFQ8E+4P208UewwI1VBNaFpEy9nXz\n" +
88 "rith1yrv8iIDGZ3RSAHHAhUAl2BQjxUjC8yykrmCouuEC/BYHPUCgYEA9+Gghdab\n" +
89 "Pd7LvKtcNrhXuXmUr7v6OuqC+VdMCz0HgmdRWVeOutRZT+ZxBxCBgLRJFnEj6Ewo\n" +
90 "FhO3zwkyjMim4TwWeotUfI0o4KOuHiuzpnWRbqN/C/ohNWLx+2J6ASQ7zKTxvqhR\n" +
91 "kImog9/hWuWfBpKLZl6Ae1UlZAFMO/7PSSoDgYQAAoGAN97otrAJEuUg/O97vScI\n" +
92 "01xs1jqTz5o0PGpKiDDJNB3tCCUbLqXoBQBvSefQ8vYL3mmlEJLxlwfbajRmJQp0\n" +
93 "tUy5SUCZHk3MdoKxSvrqYnVpYwJHFXKWs6lAawxfuWbkm9SREuepOWnVzy2ecf5z\n" +
94 "hvy9mgEBfi4E9Cy8Byq2TpyjUDBOMAwGAyoDBAEB/wQCAAAwHwYDVR0jBBgwFoAU\n" +
95 "7tLD8FnWM+r6jBr+mCXs8G5yBpgwHQYDVR0OBBYEFNRVqt5F+EAuJ5x1IZLDkoMs\n" +
96 "mDj4MAsGByqGSM44BAMFAAMvADAsAhQyNGhxIp5IshN1zqLs4pUY214IMAIUMmTL\n" +
97 "3ZMpMAjITbuHHlFNUqZ7A9s=\n" +
98 "-----END CERTIFICATE-----";
99
100 public static void main(String[] args) throws Exception {
101 X509Certificate[] chain = createChain();
102
103 /* Test 1: Test SimpleValidator
104 * SimpleValidator doesn't check for unsupported critical
105 * extensions in the end entity certificate, and leaves that up
106 * to EndEntityChecker, which should catch such extensions.
107 */
108 KeyStore ks = KeyStore.getInstance("JKS");
109 ks.load(null, null);
110 ks.setCertificateEntry("testca", chain[chain.length - 1]);
111
112 Validator v = Validator.getInstance(Validator.TYPE_SIMPLE,
113 Validator.VAR_TLS_CLIENT,
114 KeyStores.getTrustedCerts(ks));
115 try {
116 v.validate(chain);
117 throw new Exception("Chain should not have validated " +
118 "successfully.");
119 } catch (CertificateException ex) {
120 // EE cert has an unsupported critical extension that is not
121 // checked by SimpleValidator's extension checks, so this
122 // failure is expected
123 }
124
125 /* Test 2: Test PKIXValidator without custom checker
126 * PKIXValidator accepts PKIXParameters that can contain
127 * custom PKIXCertPathCheckers, which would be run against
128 * each cert in the chain, including EE certs.
129 * Check that if PKIXValidator is not provided a custom
130 * PKIXCertPathChecker for an unknown critical extension in
131 * the EE cert, chain validation will fail.
132 */
133 TrustAnchor ta = new TrustAnchor(chain[chain.length - 1], null);
134 Set<TrustAnchor> tas = new HashSet<>();
135 tas.add(ta);
136 PKIXBuilderParameters params = new PKIXBuilderParameters(tas, null);
137 params.setRevocationEnabled(false);
138
139 v = Validator.getInstance(Validator.TYPE_PKIX,
140 Validator.VAR_TLS_CLIENT,
141 params);
142 try {
143 v.validate(chain);
144 throw new Exception("Chain should not have validated " +
145 "successfully.");
146 } catch (CertificateException ex) {
147 // EE cert has an unsupported critical extension and
148 // PKIXValidator was not provided any custom checker
149 // for it, so this failure ie expected.
150 }
151
152 /* Test 3: Test PKIXValidator with custom checker
153 * Check that PKIXValidator will successfully validate a chain
154 * containing an EE cert with a critical custom extension, given
155 * a corresponding PKIXCertPathChecker for the extension.
156 */
157 params = new PKIXBuilderParameters(tas, null);
158 params.addCertPathChecker(new CustomChecker());
159 params.setRevocationEnabled(false);
160
161 v = Validator.getInstance(Validator.TYPE_PKIX,
162 Validator.VAR_TLS_CLIENT,
163 params);
164 v.validate(chain); // This should validate successfully
165
166 System.out.println("Tests passed.");
167 }
168
169 public static X509Certificate[] createChain() throws Exception {
170 CertificateFactory cf = CertificateFactory.getInstance("X.509");
171 X509Certificate ee = (X509Certificate)
172 cf.generateCertificate((new ByteArrayInputStream(EE.getBytes())));
173 X509Certificate ca = (X509Certificate)
174 cf.generateCertificate((new ByteArrayInputStream(CA.getBytes())));
175
176 X509Certificate[] chain = {ee, ca};
177 return chain;
178 }
179
180 /*
181 * A custom PKIXCertPathChecker. Looks for a critical extension
182 * in an end entity certificate with the OID 1.2.3.4.
183 */
184 static class CustomChecker extends PKIXCertPathChecker {
185
186 @Override
187 public void init(boolean forward) throws CertPathValidatorException {
188 // nothing to do
189 }
190
191 @Override
192 public boolean isForwardCheckingSupported() {
193 return false;
194 }
195
196 @Override
197 public Set<String> getSupportedExtensions() {
198 Set<String> exts = new HashSet<>();
199 exts.add("1.2.3.4");
200 return exts;
201 }
202
203 @Override
204 public void check(Certificate cert,
205 Collection<String> unresolvedCritExts)
206 throws CertPathValidatorException {
207 X509Certificate currCert = (X509Certificate)cert;
208 // check that this is an EE cert
209 if (currCert.getBasicConstraints() == -1) {
210 if (unresolvedCritExts != null &&
211 !unresolvedCritExts.isEmpty()) {
212 unresolvedCritExts.remove("1.2.3.4");
213 }
214 }
215 }
216
217 }
218 }