1 /* 2 * Copyright (c) 2011, 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 7081411 27 * @summary DSA keypair generation affected by Solaris bug 28 * @modules java.base/sun.security.provider 29 */ 30 31 import java.security.KeyPair; 32 import java.security.KeyPairGenerator; 33 import java.security.Signature; 34 import sun.security.provider.DSAPrivateKey; 35 36 public class SolarisShortDSA { 37 static byte[] data = new byte[0]; 38 public static void main(String args[]) throws Exception { 39 for (int i=0; i<10000; i++) { 40 KeyPairGenerator kpg = KeyPairGenerator.getInstance("DSA"); 41 KeyPair kp = kpg.generateKeyPair(); 42 DSAPrivateKey dpk = (DSAPrivateKey)kp.getPrivate(); 43 int len = dpk.getX().bitLength(); 44 if (len <= 152) { 45 if (!use(kp)) { 46 throw new RuntimeException("Real test failure"); 47 } 48 break; 49 } 50 } 51 } 52 53 static boolean use(KeyPair kp) throws Exception { 54 Signature sig = Signature.getInstance("SHA1withDSA"); 55 sig.initSign(kp.getPrivate()); 56 sig.update(data); 57 byte[] signed = sig.sign(); 58 Signature sig2 = Signature.getInstance("SHA1withDSA"); 59 sig2.initVerify(kp.getPublic()); 60 sig2.update(data); 61 return sig2.verify(signed); 62 } 63 }