| /* |
| * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4800108 |
| * @summary verify that precomputed DSA parameters are always used (512, 768, 1024, 2048 bit) |
| * @run main/othervm/timeout=15 TestKeyPairGenerator |
| */ |
| |
| // this fix is really a performance fix, so this test is not foolproof |
| // without it, it will take a minute or more (unless you have a very fast machine) |
| // with the fix, the test should complete in <2 seconds |
| // use 15 second timeout to leave some room |
| |
| import java.security.*; |
| import java.security.interfaces.*; |
| |
| public class TestKeyPairGenerator { |
| |
| private static void checkKeyLength(KeyPair kp, int len) throws Exception { |
| DSAPublicKey key = (DSAPublicKey)kp.getPublic(); |
| int n = key.getParams().getP().bitLength(); |
| System.out.println("Key length: " + n); |
| if (len != n) { |
| throw new Exception("Wrong key length"); |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| long start = System.currentTimeMillis(); |
| KeyPairGenerator kpg; |
| KeyPair kp; |
| // problem was when not calling initialize() |
| // do that twice to artifically inflate the time |
| // on JDKs that do not have the fix |
| kpg = KeyPairGenerator.getInstance("DSA", "SUN"); |
| kp = kpg.generateKeyPair(); |
| checkKeyLength(kp, 1024); |
| |
| kpg = KeyPairGenerator.getInstance("DSA", "SUN"); |
| kp = kpg.generateKeyPair(); |
| checkKeyLength(kp, 1024); |
| |
| // some other basic tests |
| kp = kpg.generateKeyPair(); |
| checkKeyLength(kp, 1024); |
| |
| kpg.initialize(1024); |
| kp = kpg.generateKeyPair(); |
| checkKeyLength(kp, 1024); |
| |
| kpg.initialize(768); |
| kp = kpg.generateKeyPair(); |
| checkKeyLength(kp, 768); |
| |
| kpg.initialize(512); |
| kp = kpg.generateKeyPair(); |
| checkKeyLength(kp, 512); |
| |
| kpg.initialize(2048); |
| kp = kpg.generateKeyPair(); |
| checkKeyLength(kp, 2048); |
| |
| long stop = System.currentTimeMillis(); |
| System.out.println("Time: " + (stop - start) + " ms."); |
| } |
| |
| } |