/* * Copyright (c) 1997, 2024, 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 0000000 * @library /test/lib * @summary DHKeyGenSpeed * @author Jan Luehe */ import java.security.*; import java.security.spec.*; import java.security.interfaces.*; import javax.crypto.*; import javax.crypto.spec.*; import java.math.*; import jdk.test.lib.security.DiffieHellmanGroup; import jdk.test.lib.security.SecurityUtils; public class DHKeyGenSpeed { public static void main(String[] args) throws Exception { DHKeyGenSpeed test = new DHKeyGenSpeed(); test.run(); System.out.println("Test Passed"); } public void run() throws Exception { long start, end; DiffieHellmanGroup dhGroup = SecurityUtils.getTestDHGroup(); BigInteger p = dhGroup.getPrime(); BigInteger g = new BigInteger(1, dhGroup.getBase().toByteArray()); int l = 576; DHParameterSpec spec = new DHParameterSpec(p, g, l); // generate keyPairs using parameters KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DH", System.getProperty("test.provider.name", "SunJCE")); start = System.currentTimeMillis(); keyGen.initialize(spec); KeyPair keys = keyGen.generateKeyPair(); end = System.currentTimeMillis(); System.out.println("PrimeBits\tExponentBits"); System.out.println(dhGroup.getPrime().bitLength() + "\t\t" + l); System.out.println("keyGen(millisecond): " + (end - start)); System.out.println("Test Passed!"); } }