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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/security/provider/ParameterCache.java (1 of 18352 files). Show all

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java/pkg/sun/security/provider/ParameterCache.java+226−0
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1+/*
2+ * Copyright (c) 2003, 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.provider;
27+
28+import java.util.*;
29+import java.math.BigInteger;
30+
31+import java.security.*;
32+import java.security.SecureRandom;
33+import java.security.spec.*;
34+
35+import javax.crypto.spec.DHParameterSpec;
36+
37+/**
38+ * Cache for DSA and DH parameter specs. Used by the KeyPairGenerators
39+ * in the Sun, SunJCE, and SunPKCS11 provider if no parameters have been
40+ * explicitly specified by the application.
41+ *
42+ * @author Andreas Sterbenz
43+ * @since 1.5
44+ */
45+public final class ParameterCache {
46+
47+ private ParameterCache() {
48+ // empty
49+ }
50+
51+ // cache of DSA parameters
52+ private final static Map<Integer,DSAParameterSpec> dsaCache;
53+
54+ // cache of DH parameters
55+ private final static Map<Integer,DHParameterSpec> dhCache;
56+
57+ /**
58+ * Return cached DSA parameters for the given keylength, or null if none
59+ * are available in the cache.
60+ */
61+ public static DSAParameterSpec getCachedDSAParameterSpec(int keyLength) {
62+ return dsaCache.get(Integer.valueOf(keyLength));
63+ }
64+
65+ /**
66+ * Return cached DH parameters for the given keylength, or null if none
67+ * are available in the cache.
68+ */
69+ public static DHParameterSpec getCachedDHParameterSpec(int keyLength) {
70+ return dhCache.get(Integer.valueOf(keyLength));
71+ }
72+
73+ /**
74+ * Return DSA parameters for the given keylength. Uses cache if possible,
75+ * generates new parameters and adds them to the cache otherwise.
76+ */
77+ public static DSAParameterSpec getDSAParameterSpec(int keyLength,
78+ SecureRandom random)
79+ throws NoSuchAlgorithmException, InvalidParameterSpecException {
80+ DSAParameterSpec spec = getCachedDSAParameterSpec(keyLength);
81+ if (spec != null) {
82+ return spec;
83+ }
84+ spec = getNewDSAParameterSpec(keyLength, random);
85+ dsaCache.put(Integer.valueOf(keyLength), spec);
86+ return spec;
87+ }
88+
89+ /**
90+ * Return DH parameters for the given keylength. Uses cache if possible,
91+ * generates new parameters and adds them to the cache otherwise.
92+ */
93+ public static DHParameterSpec getDHParameterSpec(int keyLength,
94+ SecureRandom random)
95+ throws NoSuchAlgorithmException, InvalidParameterSpecException {
96+ DHParameterSpec spec = getCachedDHParameterSpec(keyLength);
97+ if (spec != null) {
98+ return spec;
99+ }
100+ AlgorithmParameterGenerator gen =
101+ AlgorithmParameterGenerator.getInstance("DH");
102+ gen.init(keyLength, random);
103+ AlgorithmParameters params = gen.generateParameters();
104+ spec = params.getParameterSpec(DHParameterSpec.class);
105+ dhCache.put(Integer.valueOf(keyLength), spec);
106+ return spec;
107+ }
108+
109+ /**
110+ * Return new DSA parameters for the given keylength. Do not lookup in
111+ * cache and do not cache the newly generated parameters. This method
112+ * really only exists for the legacy method
113+ * DSAKeyPairGenerator.initialize(int, boolean, SecureRandom).
114+ */
115+ public static DSAParameterSpec getNewDSAParameterSpec(int keyLength,
116+ SecureRandom random)
117+ throws NoSuchAlgorithmException, InvalidParameterSpecException {
118+ AlgorithmParameterGenerator gen =
119+ AlgorithmParameterGenerator.getInstance("DSA");
120+ gen.init(keyLength, random);
121+ AlgorithmParameters params = gen.generateParameters();
122+ DSAParameterSpec spec = params.getParameterSpec(DSAParameterSpec.class);
123+ return spec;
124+ }
125+
126+ static {
127+ // XXX change to ConcurrentHashMap once available
128+ dhCache = Collections.synchronizedMap
129+ (new HashMap<Integer,DHParameterSpec>());
130+ dsaCache = Collections.synchronizedMap
131+ (new HashMap<Integer,DSAParameterSpec>());
132+
133+ /*
134+ * We support precomputed parameter for 512, 768 and 1024 bit
135+ * moduli. In this file we provide both the seed and counter
136+ * value of the generation process for each of these seeds,
137+ * for validation purposes. We also include the test vectors
138+ * from the DSA specification, FIPS 186, and the FIPS 186
139+ * Change No 1, which updates the test vector using SHA-1
140+ * instead of SHA (for both the G function and the message
141+ * hash.
142+ */
143+
144+ /*
145+ * L = 512
146+ * SEED = b869c82b35d70e1b1ff91b28e37a62ecdc34409b
147+ * counter = 123
148+ */
149+ BigInteger p512 =
150+ new BigInteger("fca682ce8e12caba26efccf7110e526db078b05edecb" +
151+ "cd1eb4a208f3ae1617ae01f35b91a47e6df63413c5e1" +
152+ "2ed0899bcd132acd50d99151bdc43ee737592e17", 16);
153+
154+ BigInteger q512 =
155+ new BigInteger("962eddcc369cba8ebb260ee6b6a126d9346e38c5", 16);
156+
157+ BigInteger g512 =
158+ new BigInteger("678471b27a9cf44ee91a49c5147db1a9aaf244f05a43" +
159+ "4d6486931d2d14271b9e35030b71fd73da179069b32e" +
160+ "2935630e1c2062354d0da20a6c416e50be794ca4", 16);
161+
162+ /*
163+ * L = 768
164+ * SEED = 77d0f8c4dad15eb8c4f2f8d6726cefd96d5bb399
165+ * counter = 263
166+ */
167+ BigInteger p768 =
168+ new BigInteger("e9e642599d355f37c97ffd3567120b8e25c9cd43e" +
169+ "927b3a9670fbec5d890141922d2c3b3ad24800937" +
170+ "99869d1e846aab49fab0ad26d2ce6a22219d470bc" +
171+ "e7d777d4a21fbe9c270b57f607002f3cef8393694" +
172+ "cf45ee3688c11a8c56ab127a3daf", 16);
173+
174+ BigInteger q768 =
175+ new BigInteger("9cdbd84c9f1ac2f38d0f80f42ab952e7338bf511",
176+ 16);
177+
178+ BigInteger g768 =
179+ new BigInteger("30470ad5a005fb14ce2d9dcd87e38bc7d1b1c5fac" +
180+ "baecbe95f190aa7a31d23c4dbbcbe06174544401a" +
181+ "5b2c020965d8c2bd2171d3668445771f74ba084d2" +
182+ "029d83c1c158547f3a9f1a2715be23d51ae4d3e5a" +
183+ "1f6a7064f316933a346d3f529252", 16);
184+
185+
186+ /*
187+ * L = 1024
188+ * SEED = 8d5155894229d5e689ee01e6018a237e2cae64cd
189+ * counter = 92
190+ */
191+ BigInteger p1024 =
192+ new BigInteger("fd7f53811d75122952df4a9c2eece4e7f611b7523c" +
193+ "ef4400c31e3f80b6512669455d402251fb593d8d58" +
194+ "fabfc5f5ba30f6cb9b556cd7813b801d346ff26660" +
195+ "b76b9950a5a49f9fe8047b1022c24fbba9d7feb7c6" +
196+ "1bf83b57e7c6a8a6150f04fb83f6d3c51ec3023554" +
197+ "135a169132f675f3ae2b61d72aeff22203199dd148" +
198+ "01c7", 16);
199+
200+ BigInteger q1024 =
201+ new BigInteger("9760508f15230bccb292b982a2eb840bf0581cf5",
202+ 16);
203+
204+ BigInteger g1024 =
205+ new BigInteger("f7e1a085d69b3ddecbbcab5c36b857b97994afbbfa" +
206+ "3aea82f9574c0b3d0782675159578ebad4594fe671" +
207+ "07108180b449167123e84c281613b7cf09328cc8a6" +
208+ "e13c167a8b547c8d28e0a3ae1e2bb3a675916ea37f" +
209+ "0bfa213562f1fb627a01243bcca4f1bea8519089a8" +
210+ "83dfe15ae59f06928b665e807b552564014c3bfecf" +
211+ "492a", 16);
212+
213+ dsaCache.put(Integer.valueOf(512),
214+ new DSAParameterSpec(p512, q512, g512));
215+ dsaCache.put(Integer.valueOf(768),
216+ new DSAParameterSpec(p768, q768, g768));
217+ dsaCache.put(Integer.valueOf(1024),
218+ new DSAParameterSpec(p1024, q1024, g1024));
219+
220+ // use DSA parameters for DH as well
221+ dhCache.put(Integer.valueOf(512), new DHParameterSpec(p512, g512));
222+ dhCache.put(Integer.valueOf(768), new DHParameterSpec(p768, g768));
223+ dhCache.put(Integer.valueOf(1024), new DHParameterSpec(p1024, g1024));
224+ }
225+
226+}