author | bpb |
Fri, 06 Mar 2015 16:00:58 -0800 | |
changeset 29371 | 6f7f029a6b63 |
parent 5506 | 202f599c92aa |
child 30046 | cf2c86e1819e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* @test |
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* @library .. |
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* @bug 4891312 8074460 |
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* @summary verify that modPow() not broken by the special case for 65537 (use -Dseed=X to set PRNG seed) |
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* @author Andreas Sterbenz |
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*/ |
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import java.math.BigInteger; |
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import java.security.*; |
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import java.security.spec.*; |
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public class ModPow65537 { |
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public static void main(String[] args) throws Exception { |
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// SunRsaSign uses BigInteger internally |
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KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", "SunRsaSign"); |
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kpg.initialize(new RSAKeyGenParameterSpec(512, BigInteger.valueOf(65537))); |
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KeyPair kp = kpg.generateKeyPair(); |
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testSigning(kp); |
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kpg.initialize(new RSAKeyGenParameterSpec(512, BigInteger.valueOf(65539))); |
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kp = kpg.generateKeyPair(); |
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testSigning(kp); |
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kpg.initialize(new RSAKeyGenParameterSpec(512, BigInteger.valueOf(3))); |
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kp = kpg.generateKeyPair(); |
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testSigning(kp); |
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// basic known answer test |
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BigInteger base = new BigInteger("19058071224156864789844466979330892664777520457048234786139035643344145635582"); |
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BigInteger mod = new BigInteger("75554098474976067521257305210610421240510163914613117319380559667371251381587"); |
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BigInteger exp1 = BigInteger.valueOf(65537); |
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BigInteger exp2 = BigInteger.valueOf(75537); |
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BigInteger exp3 = new BigInteger("13456870775607312149"); |
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BigInteger res1 = new BigInteger("5770048609366563851320890693196148833634112303472168971638730461010114147506"); |
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BigInteger res2 = new BigInteger("63446979364051087123350579021875958137036620431381329472348116892915461751531"); |
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BigInteger res3 = new BigInteger("39016891919893878823999350081191675846357272199067075794096200770872982089502"); |
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if (base.modPow(exp1, mod).equals(res1) == false) { |
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throw new Exception("Error using " + exp1); |
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} |
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if (base.modPow(exp2, mod).equals(res2) == false) { |
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throw new Exception("Error using " + exp2); |
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} |
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if (base.modPow(exp3, mod).equals(res3) == false) { |
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throw new Exception("Error using " + exp3); |
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} |
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System.out.println("Passed"); |
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} |
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private static void testSigning(KeyPair kp) throws Exception { |
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System.out.println(kp.getPublic()); |
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byte[] data = new byte[1024]; |
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8074460: Always print seeds used in [Splittable]Random instances in java.math tests
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RandomSeed rndSeed = new RandomSeed(false); |
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System.out.println("Random number generator seed = " + rndSeed.getSeed()); |
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rndSeed.getRandom().nextBytes(data); |
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Signature sig = Signature.getInstance("SHA1withRSA", "SunRsaSign"); |
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sig.initSign(kp.getPrivate()); |
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sig.update(data); |
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byte[] sigBytes = sig.sign(); |
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sig.initVerify(kp.getPublic()); |
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sig.update(data); |
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if (sig.verify(sigBytes) == false) { |
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throw new Exception("signature verification failed"); |
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} |
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System.out.println("OK"); |
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} |
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} |