85 lines
3.6 KiB
Java
85 lines
3.6 KiB
Java
/*
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* Copyright (c) 2017, 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 8181048
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* @summary verify that when the returned DSA KeyPairGenerator is
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* an instance of java.security.interfaces.DSAKeyPairGenerator,
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* the behavior is compliant with the javadoc spec.
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* @run main/othervm -Djdk.security.legacyDSAKeyPairGenerator=tRUe TestLegacyDSAKeyPairGenerator
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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 TestLegacyDSAKeyPairGenerator {
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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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KeyPairGenerator kpg = KeyPairGenerator.getInstance("DSA", "SUN");
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// check the returned object implements the legacy interface
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if (!(kpg instanceof DSAKeyPairGenerator)) {
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throw new Exception("Should be an instance of DSAKeyPairGenerator");
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}
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System.out.println("Returned an instance of DSAKeyPairGenerator");
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// check the default key size is 1024 when initiaize(..) is not called
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KeyPair kp1 = kpg.generateKeyPair();
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checkKeyLength(kp1, 1024);
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KeyPair kp2 = kpg.generateKeyPair();
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checkKeyLength(kp2, 1024);
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System.out.println("Used 1024 default key size");
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// check kp1 and kp2 uses the same DSA parameters p, q, g
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DSAParams param1 = ((DSAPublicKey)kp1.getPublic()).getParams();
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DSAParams param2 = ((DSAPublicKey)kp2.getPublic()).getParams();
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if ((param1.getP().compareTo(param2.getP()) != 0) ||
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(param1.getQ().compareTo(param2.getQ()) != 0) ||
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(param1.getG().compareTo(param2.getG()) != 0)) {
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throw new RuntimeException("Key params mismatch");
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}
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System.out.println("Used same default params");
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// check that the documented exception is thrown if no cached parameters
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int sizeNotInCache = (1024 - 64);
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try {
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((DSAKeyPairGenerator)kpg).initialize(sizeNotInCache, false, null);
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throw new RuntimeException("Expected IPE not thrown");
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} catch (InvalidParameterException ipe) {
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System.out.println("Throwed expected IPE");
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}
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((DSAKeyPairGenerator)kpg).initialize(sizeNotInCache, true, null);
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KeyPair kp = kpg.generateKeyPair();
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checkKeyLength(kp, sizeNotInCache);
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System.out.println("Generated requested key size");
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}
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}
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