1 /* 2 * Copyright (c) 2015, 2016, 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 8023546 8151834 27 * @modules java.base/sun.security.x509 28 * java.base/sun.security.tools.keytool 29 * @summary Test prime exponent (p) lengths 63 and 65 bytes with SunMSCAPI. 30 * The seed 76 has the fastest test execution now (only 5 rounds) and is 31 * hard-coded in run tag. This number might change if algorithms for 32 * RSA key pair generation or BigInteger prime searching gets updated. 33 * @requires os.family == "windows" 34 * @run main SmallPrimeExponentP 76 35 */ 36 import sun.security.tools.keytool.CertAndKeyGen; 37 import sun.security.x509.X500Name; 38 39 import java.security.KeyStore; 40 import java.security.SecureRandom; 41 import java.security.cert.X509Certificate; 42 import java.security.interfaces.RSAPrivateCrtKey; 43 import java.util.Random; 44 45 public class SmallPrimeExponentP { 46 47 public static void main(String argv[]) throws Exception { 48 49 long seed = Long.parseLong(argv[0]); 50 System.out.println("Seed for SecureRandom = " + seed + "L"); 51 52 KeyStore ks = KeyStore.getInstance("Windows-MY"); 53 ks.load(null, null); 54 55 CertAndKeyGen ckg = new CertAndKeyGen("RSA", "SHA1withRSA"); 56 ckg.setRandom(new MySecureRandom(seed)); 57 58 boolean see63 = false; 59 boolean see65 = false; 60 while (!see63 || !see65) { 61 ckg.generate(1024); 62 RSAPrivateCrtKey k = (RSAPrivateCrtKey) ckg.getPrivateKey(); 63 64 int len = k.getPrimeExponentP().toByteArray().length; 65 System.out.println("Length of P = " + len); 66 if (len == 63 || len == 65) { 67 if (len == 63) { 68 if (see63) { 69 continue; 70 } else { 71 see63 = true; 72 } 73 } 74 if (len == 65) { 75 if (see65) { 76 continue; 77 } else { 78 see65 = true; 79 } 80 } 81 ks.setKeyEntry("anything", k, null, new X509Certificate[]{ 82 ckg.getSelfCertificate(new X500Name("CN=Me"), 1000) 83 }); 84 } 85 } 86 ks.store(null, null); 87 } 88 89 static class MySecureRandom extends SecureRandom { 90 91 final Random random; 92 93 public MySecureRandom(long seed) { 94 random = new Random(seed); 95 } 96 97 @Override 98 public void nextBytes(byte[] bytes) { 99 random.nextBytes(bytes); 100 } 101 } 102 }