1 /*
2 * Copyright (c) 2017, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.security.ssl;
27
28 import java.security.*;
29 import java.math.BigInteger;
30 import java.util.regex.Pattern;
31 import java.util.regex.Matcher;
32 import java.util.Map;
33 import java.util.HashMap;
34 import java.util.Collections;
35 import javax.crypto.spec.DHParameterSpec;
36
37 /**
38 * Predefined default DH ephemeral parameters.
39 */
40 final class PredefinedDHParameterSpecs {
41 private final static boolean debugIsOn =
42 (Debug.getInstance("ssl") != null) && Debug.isOn("sslctx");
43
44 //
45 // Default DH ephemeral parameters
46 //
47 private static final BigInteger p512 = new BigInteger( // generated
48 "D87780E15FF50B4ABBE89870188B049406B5BEA98AB23A02" +
49 "41D88EA75B7755E669C08093D3F0CA7FC3A5A25CF067DCB9" +
50 "A43DD89D1D90921C6328884461E0B6D3", 16);
51 private static final BigInteger p768 = new BigInteger( // RFC 2409
52 "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
53 "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
54 "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
55 "E485B576625E7EC6F44C42E9A63A3620FFFFFFFFFFFFFFFF", 16);
56
57 private static final BigInteger p1024 = new BigInteger( // RFC 2409
58 "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
59 "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
60 "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
61 "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
62 "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381" +
63 "FFFFFFFFFFFFFFFF", 16);
64 private static final BigInteger p1536 = new BigInteger( // RFC 3526
65 "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" +
66 "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" +
67 "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" +
68 "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" +
69 "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" +
70 "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" +
71 "83655D23DCA3AD961C62F356208552BB9ED529077096966D" +
72 "670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF", 16);
73 private static final BigInteger p2048 = new BigInteger( // TLS FFDHE
74 "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1" +
75 "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" +
76 "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561" +
77 "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" +
78 "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735" +
79 "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" +
80 "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19" +
81 "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" +
82 "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73" +
83 "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" +
84 "886B423861285C97FFFFFFFFFFFFFFFF", 16);
85 private static final BigInteger p3072 = new BigInteger( // TLS FFDHE
86 "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1" +
87 "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" +
88 "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561" +
89 "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" +
90 "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735" +
91 "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" +
92 "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19" +
93 "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" +
94 "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73" +
95 "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" +
96 "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238" +
97 "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" +
98 "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3" +
99 "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" +
100 "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF" +
101 "3C1B20EE3FD59D7C25E41D2B66C62E37FFFFFFFFFFFFFFFF", 16);
102 private static final BigInteger p4096 = new BigInteger( // TLS FFDHE
103 "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1" +
104 "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" +
105 "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561" +
106 "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" +
107 "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735" +
108 "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" +
109 "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19" +
110 "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" +
111 "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73" +
112 "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" +
113 "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238" +
114 "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" +
115 "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3" +
116 "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" +
117 "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF" +
118 "3C1B20EE3FD59D7C25E41D2B669E1EF16E6F52C3164DF4FB" +
119 "7930E9E4E58857B6AC7D5F42D69F6D187763CF1D55034004" +
120 "87F55BA57E31CC7A7135C886EFB4318AED6A1E012D9E6832" +
121 "A907600A918130C46DC778F971AD0038092999A333CB8B7A" +
122 "1A1DB93D7140003C2A4ECEA9F98D0ACC0A8291CDCEC97DCF" +
123 "8EC9B55A7F88A46B4DB5A851F44182E1C68A007E5E655F6A" +
124 "FFFFFFFFFFFFFFFF", 16);
125 private static final BigInteger p6144 = new BigInteger( // TLS FFDHE
126 "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1" +
127 "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" +
128 "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561" +
129 "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" +
130 "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735" +
131 "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" +
132 "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19" +
133 "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" +
134 "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73" +
135 "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" +
136 "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238" +
137 "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" +
138 "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3" +
139 "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" +
140 "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF" +
141 "3C1B20EE3FD59D7C25E41D2B669E1EF16E6F52C3164DF4FB" +
142 "7930E9E4E58857B6AC7D5F42D69F6D187763CF1D55034004" +
143 "87F55BA57E31CC7A7135C886EFB4318AED6A1E012D9E6832" +
144 "A907600A918130C46DC778F971AD0038092999A333CB8B7A" +
145 "1A1DB93D7140003C2A4ECEA9F98D0ACC0A8291CDCEC97DCF" +
146 "8EC9B55A7F88A46B4DB5A851F44182E1C68A007E5E0DD902" +
147 "0BFD64B645036C7A4E677D2C38532A3A23BA4442CAF53EA6" +
148 "3BB454329B7624C8917BDD64B1C0FD4CB38E8C334C701C3A" +
149 "CDAD0657FCCFEC719B1F5C3E4E46041F388147FB4CFDB477" +
150 "A52471F7A9A96910B855322EDB6340D8A00EF092350511E3" +
151 "0ABEC1FFF9E3A26E7FB29F8C183023C3587E38DA0077D9B4" +
152 "763E4E4B94B2BBC194C6651E77CAF992EEAAC0232A281BF6" +
153 "B3A739C1226116820AE8DB5847A67CBEF9C9091B462D538C" +
154 "D72B03746AE77F5E62292C311562A846505DC82DB854338A" +
155 "E49F5235C95B91178CCF2DD5CACEF403EC9D1810C6272B04" +
156 "5B3B71F9DC6B80D63FDD4A8E9ADB1E6962A69526D43161C1" +
157 "A41D570D7938DAD4A40E329CD0E40E65FFFFFFFFFFFFFFFF", 16);
158 private static final BigInteger p8192 = new BigInteger( // TLS FFDHE
159 "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1" +
160 "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" +
161 "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561" +
162 "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" +
163 "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735" +
164 "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" +
165 "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19" +
166 "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" +
167 "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73" +
168 "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" +
169 "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238" +
170 "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" +
171 "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3" +
172 "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" +
173 "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF" +
174 "3C1B20EE3FD59D7C25E41D2B669E1EF16E6F52C3164DF4FB" +
175 "7930E9E4E58857B6AC7D5F42D69F6D187763CF1D55034004" +
176 "87F55BA57E31CC7A7135C886EFB4318AED6A1E012D9E6832" +
177 "A907600A918130C46DC778F971AD0038092999A333CB8B7A" +
178 "1A1DB93D7140003C2A4ECEA9F98D0ACC0A8291CDCEC97DCF" +
179 "8EC9B55A7F88A46B4DB5A851F44182E1C68A007E5E0DD902" +
180 "0BFD64B645036C7A4E677D2C38532A3A23BA4442CAF53EA6" +
181 "3BB454329B7624C8917BDD64B1C0FD4CB38E8C334C701C3A" +
182 "CDAD0657FCCFEC719B1F5C3E4E46041F388147FB4CFDB477" +
183 "A52471F7A9A96910B855322EDB6340D8A00EF092350511E3" +
184 "0ABEC1FFF9E3A26E7FB29F8C183023C3587E38DA0077D9B4" +
185 "763E4E4B94B2BBC194C6651E77CAF992EEAAC0232A281BF6" +
186 "B3A739C1226116820AE8DB5847A67CBEF9C9091B462D538C" +
187 "D72B03746AE77F5E62292C311562A846505DC82DB854338A" +
188 "E49F5235C95B91178CCF2DD5CACEF403EC9D1810C6272B04" +
189 "5B3B71F9DC6B80D63FDD4A8E9ADB1E6962A69526D43161C1" +
190 "A41D570D7938DAD4A40E329CCFF46AAA36AD004CF600C838" +
191 "1E425A31D951AE64FDB23FCEC9509D43687FEB69EDD1CC5E" +
192 "0B8CC3BDF64B10EF86B63142A3AB8829555B2F747C932665" +
193 "CB2C0F1CC01BD70229388839D2AF05E454504AC78B758282" +
194 "2846C0BA35C35F5C59160CC046FD8251541FC68C9C86B022" +
195 "BB7099876A460E7451A8A93109703FEE1C217E6C3826E52C" +
196 "51AA691E0E423CFC99E9E31650C1217B624816CDAD9A95F9" +
197 "D5B8019488D9C0A0A1FE3075A577E23183F81D4A3F2FA457" +
198 "1EFC8CE0BA8A4FE8B6855DFE72B0A66EDED2FBABFBE58A30" +
199 "FAFABE1C5D71A87E2F741EF8C1FE86FEA6BBFDE530677F0D" +
200 "97D11D49F7A8443D0822E506A9F4614E011E2A94838FF88C" +
201 "D68C8BB7C5C6424CFFFFFFFFFFFFFFFF", 16);
202
203 private static final BigInteger[] supportedPrimes = {
204 p512, p768, p1024, p1536, p2048, p3072, p4096, p6144, p8192};
205
206 private static final BigInteger[] ffdhePrimes = {
207 p2048, p3072, p4096, p6144, p8192};
208
209 // a measure of the uncertainty that prime modulus p is not a prime
210 //
211 // see BigInteger.isProbablePrime(int certainty)
212 private final static int PRIME_CERTAINTY = 120;
213
214 // the known security property, jdk.tls.server.defaultDHEParameters
215 private final static String PROPERTY_NAME =
216 "jdk.tls.server.defaultDHEParameters";
217
218 private static final Pattern spacesPattern = Pattern.compile("\\s+");
219
220 private final static Pattern syntaxPattern = Pattern.compile(
221 "(\\{[0-9A-Fa-f]+,[0-9A-Fa-f]+\\})" +
222 "(,\\{[0-9A-Fa-f]+,[0-9A-Fa-f]+\\})*");
223
224 private static final Pattern paramsPattern = Pattern.compile(
225 "\\{([0-9A-Fa-f]+),([0-9A-Fa-f]+)\\}");
226
227 // cache of predefined default DH ephemeral parameters
228 final static Map<Integer, DHParameterSpec> definedParams;
229
230 // cache of Finite Field DH Ephemeral parameters (RFC 7919/FFDHE)
231 final static Map<Integer, DHParameterSpec> ffdheParams;
232
233 static {
234 String property = AccessController.doPrivileged(
235 new PrivilegedAction<String>() {
236 public String run() {
237 return Security.getProperty(PROPERTY_NAME);
238 }
239 });
240
241 if (property != null && !property.isEmpty()) {
242 // remove double quote marks from beginning/end of the property
243 if (property.length() >= 2 && property.charAt(0) == '"' &&
244 property.charAt(property.length() - 1) == '"') {
245 property = property.substring(1, property.length() - 1);
246 }
247
248 property = property.trim();
249 }
250
251 if (property != null && !property.isEmpty()) {
252 Matcher spacesMatcher = spacesPattern.matcher(property);
253 property = spacesMatcher.replaceAll("");
254
255 if (debugIsOn) {
256 System.out.println("The Security Property " +
257 PROPERTY_NAME + ": " + property);
258 }
259 }
260
261 Map<Integer,DHParameterSpec> defaultParams = new HashMap<>();
262 if (property != null && !property.isEmpty()) {
263 Matcher syntaxMatcher = syntaxPattern.matcher(property);
264 if (syntaxMatcher.matches()) {
265 Matcher paramsFinder = paramsPattern.matcher(property);
266 while(paramsFinder.find()) {
267 String primeModulus = paramsFinder.group(1);
268 BigInteger p = new BigInteger(primeModulus, 16);
269 if (!p.isProbablePrime(PRIME_CERTAINTY)) {
270 if (debugIsOn) {
271 System.out.println(
272 "Prime modulus p in Security Property, " +
273 PROPERTY_NAME + ", is not a prime: " +
274 primeModulus);
275 }
276
277 continue;
278 }
279
280 String baseGenerator = paramsFinder.group(2);
281 BigInteger g = new BigInteger(baseGenerator, 16);
282
283 DHParameterSpec spec = new DHParameterSpec(p, g);
284 int primeLen = p.bitLength();
285 defaultParams.put(primeLen, spec);
286 }
287 } else if (debugIsOn) {
288 System.out.println("Invalid Security Property, " +
289 PROPERTY_NAME + ", definition");
290 }
291 }
292
293 Map<Integer,DHParameterSpec> tempFFDHEs = new HashMap<>();
294 for (BigInteger p : ffdhePrimes) {
295 int primeLen = p.bitLength();
296 DHParameterSpec dhps = new DHParameterSpec(p, BigInteger.TWO);
297 tempFFDHEs.put(primeLen, dhps);
298 defaultParams.putIfAbsent(primeLen, dhps);
299 }
300
301 for (BigInteger p : supportedPrimes) {
302 int primeLen = p.bitLength();
303 if (defaultParams.get(primeLen) == null) {
304 defaultParams.put(primeLen,
305 new DHParameterSpec(p, BigInteger.TWO));
306 }
307 }
308
309 ffdheParams =
310 Collections.<Integer,DHParameterSpec>unmodifiableMap(tempFFDHEs);
311 definedParams =
312 Collections.<Integer,DHParameterSpec>unmodifiableMap(defaultParams);
313 }
314 }