1 /* 2 * Copyright (c) 2015, 2020, 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 8044199 8137231 27 * @summary Check same KeyPair's private key and public key have same modulus. 28 * also check public key's public exponent equals to given spec's public 29 * exponent. Only key size 1024 is tested with RSAKeyGenParameterSpec.F0 (3). 30 * @run main SpecTest 512 31 * @run main SpecTest 768 32 * @run main SpecTest 1024 33 * @run main SpecTest 1024 167971 34 * @run main SpecTest 2048 35 * @run main/timeout=240 SpecTest 4096 36 * @run main/timeout=240 SpecTest 5120 37 */ 38 import java.math.BigInteger; 39 import java.security.KeyPair; 40 import java.security.KeyPairGenerator; 41 import java.security.interfaces.RSAKey; 42 import java.security.interfaces.RSAPrivateKey; 43 import java.security.interfaces.RSAPublicKey; 44 import java.security.spec.RSAKeyGenParameterSpec; 45 46 public class SpecTest { 47 48 /** 49 * ALGORITHM name, fixed as RSA. 50 */ 51 private static final String KEYALG = "RSA"; 52 53 /** 54 * JDK default RSA Provider. 55 */ 56 private static final String PROVIDER = "SunRsaSign"; 57 58 /** 59 * 60 * @param kpair test key pair 61 * @param pubExponent expected public exponent. 62 * @return true if test passed. false if test failed. 63 */ specTest(KeyPair kpair, BigInteger pubExponent)64 private static boolean specTest(KeyPair kpair, BigInteger pubExponent) { 65 boolean passed = true; 66 RSAPrivateKey priv = (RSAPrivateKey) kpair.getPrivate(); 67 RSAPublicKey pub = (RSAPublicKey) kpair.getPublic(); 68 69 // test the getModulus method 70 if ((priv instanceof RSAKey) && (pub instanceof RSAKey)) { 71 if (!priv.getModulus().equals(pub.getModulus())) { 72 System.out.println("priv.getModulus() = " + priv.getModulus()); 73 System.out.println("pub.getModulus() = " + pub.getModulus()); 74 passed = false; 75 } 76 77 if (!pubExponent.equals(pub.getPublicExponent())) { 78 System.out.println("pubExponent = " + pubExponent); 79 System.out.println("pub.getPublicExponent() = " 80 + pub.getPublicExponent()); 81 passed = false; 82 } 83 } 84 return passed; 85 } 86 main(String[] args)87 public static void main(String[] args) throws Exception { 88 89 int size = 0; 90 91 if (args.length >= 1) { 92 size = Integer.parseInt(args[0]); 93 } else { 94 throw new RuntimeException("Missing keysize to test with"); 95 } 96 97 BigInteger publicExponent 98 = (args.length >= 2) ? new BigInteger(args[1]) : RSAKeyGenParameterSpec.F4; 99 100 System.out.println("Running test with key size: " + size 101 + " and public exponent: " + publicExponent); 102 103 KeyPairGenerator kpg1 = KeyPairGenerator.getInstance(KEYALG, PROVIDER); 104 kpg1.initialize(new RSAKeyGenParameterSpec(size, publicExponent)); 105 if (!specTest(kpg1.generateKeyPair(), publicExponent)) { 106 throw new RuntimeException("Test failed."); 107 } 108 } 109 } 110