95 lines
3.2 KiB
Java
95 lines
3.2 KiB
Java
/*
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* Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4800108 8072452 8181048
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* @summary verify that precomputed DSA parameters are always used (512, 768,
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* 1024, 2048, 3072 bit)
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* @run main/othervm/timeout=15 TestKeyPairGenerator
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*/
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//
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// This fix is really a performance fix, so this test is not foolproof.
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// Without the precomputed parameters, it will take a minute or more
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// (unless you have a very fast machine). With the fix, the test should
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// complete in less than 2 seconds. Use 15 second timeout to leave some room.
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//
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import java.security.*;
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import java.security.interfaces.*;
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public class TestKeyPairGenerator {
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private static void checkKeyLength(KeyPair kp, int len) throws Exception {
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DSAPublicKey key = (DSAPublicKey)kp.getPublic();
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int n = key.getParams().getP().bitLength();
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System.out.println("Key length: " + n);
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if (len != n) {
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throw new Exception("Wrong key length");
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}
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}
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public static void main(String[] args) throws Exception {
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long start = System.currentTimeMillis();
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KeyPairGenerator kpg;
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KeyPair kp;
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// problem was when not calling initialize()
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// do that twice to artifically inflate the time
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// on JDKs that do not have the fix
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kpg = KeyPairGenerator.getInstance("DSA",
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System.getProperty("test.provider.name", "SUN"));
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kp = kpg.generateKeyPair();
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kpg = KeyPairGenerator.getInstance("DSA",
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System.getProperty("test.provider.name", "SUN"));
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kp = kpg.generateKeyPair();
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// some other basic tests
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kp = kpg.generateKeyPair();
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kpg.initialize(1024);
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kp = kpg.generateKeyPair();
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checkKeyLength(kp, 1024);
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kpg.initialize(768);
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kp = kpg.generateKeyPair();
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checkKeyLength(kp, 768);
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kpg.initialize(512);
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kp = kpg.generateKeyPair();
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checkKeyLength(kp, 512);
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kpg.initialize(2048);
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kp = kpg.generateKeyPair();
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checkKeyLength(kp, 2048);
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kpg.initialize(3072);
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kp = kpg.generateKeyPair();
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checkKeyLength(kp, 3072);
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long stop = System.currentTimeMillis();
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System.out.println("Time: " + (stop - start) + " ms.");
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}
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}
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