1 /* 2 * Copyright (c) 2003, 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 4856966 27 * @summary Verify that the RSA KeyPairGenerator works 28 * @author Andreas Sterbenz 29 * @library .. 30 * @run main/othervm TestKeyPairGenerator 31 * @key randomness 32 */ 33 34 import java.io.*; 35 import java.util.*; 36 import java.math.BigInteger; 37 38 import java.security.*; 39 import java.security.interfaces.*; 40 import java.security.spec.*; 41 42 public class TestKeyPairGenerator extends PKCS11Test { 43 44 private static Provider provider; 45 46 private static byte[] data; 47 48 private static void testSignature(String algorithm, PrivateKey privateKey, PublicKey publicKey) throws Exception { 49 System.out.println("Testing " + algorithm + "..."); 50 Signature s = Signature.getInstance(algorithm, provider); 51 s.initSign(privateKey); 52 s.update(data); 53 byte[] sig = s.sign(); 54 s.initVerify(publicKey); 55 s.update(data); 56 boolean result = s.verify(sig); 57 if (result == false) { 58 throw new Exception("Verification failed"); 59 } 60 } 61 62 private static void test(PrivateKey privateKey, PublicKey publicKey) throws Exception { 63 testSignature("MD2withRSA", privateKey, publicKey); 64 testSignature("MD5withRSA", privateKey, publicKey); 65 testSignature("SHA1withRSA", privateKey, publicKey); 66 testSignature("SHA224withRSA", privateKey, publicKey); 67 testSignature("SHA256withRSA", privateKey, publicKey); 68 RSAPublicKey rsaKey = (RSAPublicKey)publicKey; 69 if (rsaKey.getModulus().bitLength() > 512) { 70 // for SHA384 and SHA512 the data is too long for 512 bit keys 71 testSignature("SHA384withRSA", privateKey, publicKey); 72 testSignature("SHA512withRSA", privateKey, publicKey); 73 } 74 } 75 76 // regression test for 4865198 77 private static void testInvalidSignature(KeyPair kp1, KeyPair kp2) throws Exception { 78 System.out.println("Testing signature with incorrect key..."); 79 Signature sig = Signature.getInstance("MD5withRSA", provider); 80 sig.initSign(kp1.getPrivate()); 81 byte[] data = new byte[100]; 82 sig.update(data); 83 byte[] signature = sig.sign(); 84 sig.initVerify(kp1.getPublic()); 85 sig.update(data); 86 if (sig.verify(signature) == false) { 87 throw new Exception("verification failed"); 88 } 89 sig.initVerify(kp2.getPublic()); 90 sig.update(data); 91 // verify needs to return false and not throw an Exception 92 if (sig.verify(signature)) { 93 throw new Exception("verification unexpectedly succeeded"); 94 } 95 } 96 97 public static void main(String[] args) throws Exception { 98 main(new TestKeyPairGenerator()); 99 } 100 101 public void main(Provider p) throws Exception { 102 long start = System.currentTimeMillis(); 103 provider = p; 104 data = new byte[2048]; 105 // keypair generation is very slow, test only a few short keys 106 int[] keyLengths = {512, 512, 1024}; 107 BigInteger[] pubExps = {null, BigInteger.valueOf(3), null}; 108 KeyPair[] keyPairs = new KeyPair[3]; 109 new Random().nextBytes(data); 110 KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", provider); 111 for (int i = 0; i < keyLengths.length; i++) { 112 int len = keyLengths[i]; 113 BigInteger exp = pubExps[i]; 114 System.out.println("Generating " + len + " bit keypair..."); 115 if (exp == null) { 116 kpg.initialize(len); 117 } else { 118 kpg.initialize(new RSAKeyGenParameterSpec(len, exp)); 119 } 120 KeyPair kp = kpg.generateKeyPair(); 121 keyPairs[i] = kp; 122 RSAPublicKey publicKey = (RSAPublicKey)kp.getPublic(); 123 System.out.println(publicKey); 124 RSAPrivateCrtKey privateKey = (RSAPrivateCrtKey)kp.getPrivate(); 125 if (publicKey.getModulus().equals(privateKey.getModulus()) == false) { 126 throw new Exception("Moduli do not match"); 127 } 128 if (publicKey.getPublicExponent().equals(privateKey.getPublicExponent()) == false) { 129 throw new Exception("Exponents do not match"); 130 } 131 int keyLen = publicKey.getModulus().bitLength(); 132 if ((keyLen > len) || (keyLen < len - 1)) { 133 throw new Exception("Incorrect key length: " + keyLen); 134 } 135 if (exp != null) { 136 if (exp.equals(publicKey.getPublicExponent()) == false) { 137 throw new Exception("Incorrect exponent"); 138 } 139 } 140 test(privateKey, publicKey); 141 } 142 testInvalidSignature(keyPairs[0], keyPairs[1]); 143 testInvalidSignature(keyPairs[0], keyPairs[2]); 144 long stop = System.currentTimeMillis(); 145 System.out.println("All tests passed (" + (stop - start) + " ms)."); 146 } 147 }