| /* |
| * Copyright (c) 2015, 2016, 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. |
| */ |
| |
| import java.security.AlgorithmParameterGenerator; |
| import java.security.AlgorithmParameters; |
| import java.security.InvalidAlgorithmParameterException; |
| import java.security.InvalidParameterException; |
| import java.security.KeyPairGenerator; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.NoSuchProviderException; |
| import java.security.spec.DSAGenParameterSpec; |
| import java.security.spec.DSAParameterSpec; |
| import java.security.spec.InvalidParameterSpecException; |
| |
| /* |
| * @test |
| * @bug 8075286 |
| * @summary Verify that DSAGenParameterSpec can and can only be used to generate |
| * DSA within some certain range of key sizes as described in the class |
| * specification (L, N) as (1024, 160), (2048, 224), (2048, 256) and |
| * (3072, 256) should be OK for DSAGenParameterSpec. |
| * @run main TestDSAGenParameterSpec 512 160 |
| * @run main TestDSAGenParameterSpec 1024 160 true |
| * @run main TestDSAGenParameterSpec 1024 224 |
| * @run main TestDSAGenParameterSpec 2048 160 |
| * @run main/timeout=300 TestDSAGenParameterSpec 2048 224 true |
| * @run main/timeout=300 TestDSAGenParameterSpec 2048 256 true |
| * @run main TestDSAGenParameterSpec 3072 224 |
| * @run main/timeout=700 TestDSAGenParameterSpec 3072 256 true |
| * @run main TestDSAGenParameterSpec 4096 256 |
| */ |
| public class TestDSAGenParameterSpec { |
| |
| private static final String ALGORITHM_NAME = "DSA"; |
| private static final String PROVIDER_NAME = "SUN"; |
| |
| private static void testDSAGenParameterSpec(DataTuple dataTuple) |
| throws NoSuchAlgorithmException, NoSuchProviderException, |
| InvalidParameterSpecException, InvalidAlgorithmParameterException { |
| System.out.printf("Test case: primePLen=%d, " + "subprimeQLen=%d%n", |
| dataTuple.primePLen, dataTuple.subprimeQLen); |
| |
| AlgorithmParameterGenerator apg |
| = AlgorithmParameterGenerator.getInstance(ALGORITHM_NAME, |
| PROVIDER_NAME); |
| |
| DSAGenParameterSpec genParamSpec = createGenParameterSpec(dataTuple); |
| // genParamSpec will be null if IllegalAE is thrown when expected. |
| if (genParamSpec == null) { |
| return; |
| } |
| |
| try { |
| apg.init(genParamSpec, null); |
| AlgorithmParameters param = apg.generateParameters(); |
| |
| checkParam(param, genParamSpec); |
| System.out.println("Test case passed"); |
| } catch (InvalidParameterException ipe) { |
| throw new RuntimeException("Test case failed.", ipe); |
| } |
| } |
| |
| private static void checkParam(AlgorithmParameters param, |
| DSAGenParameterSpec genParam) throws InvalidParameterSpecException, |
| NoSuchAlgorithmException, NoSuchProviderException, |
| InvalidAlgorithmParameterException { |
| String algorithm = param.getAlgorithm(); |
| if (!algorithm.equalsIgnoreCase(ALGORITHM_NAME)) { |
| throw new RuntimeException( |
| "Unexpected type of parameters: " + algorithm); |
| } |
| |
| DSAParameterSpec spec = param.getParameterSpec(DSAParameterSpec.class); |
| int valueL = spec.getP().bitLength(); |
| int strengthP = genParam.getPrimePLength(); |
| if (strengthP != valueL) { |
| System.out.printf("P: Expected %d but actual %d%n", strengthP, |
| valueL); |
| throw new RuntimeException("Wrong P strength"); |
| } |
| |
| int valueN = spec.getQ().bitLength(); |
| int strengthQ = genParam.getSubprimeQLength(); |
| if (strengthQ != valueN) { |
| System.out.printf("Q: Expected %d but actual %d%n", strengthQ, |
| valueN); |
| throw new RuntimeException("Wrong Q strength"); |
| } |
| |
| if (genParam.getSubprimeQLength() != genParam.getSeedLength()) { |
| System.out.println("Defaut seed length should be the same as Q."); |
| throw new RuntimeException("Wrong seed length"); |
| } |
| |
| KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM_NAME, |
| PROVIDER_NAME); |
| keyGen.initialize(spec); |
| } |
| |
| private static DSAGenParameterSpec createGenParameterSpec( |
| DataTuple dataTuple) { |
| DSAGenParameterSpec genParamSpec = null; |
| try { |
| genParamSpec = new DSAGenParameterSpec(dataTuple.primePLen, |
| dataTuple.subprimeQLen); |
| if (!dataTuple.isDSASpecSupported) { |
| throw new RuntimeException( |
| "Test case failed: the key length must not supported"); |
| } |
| } catch (IllegalArgumentException e) { |
| if (!dataTuple.isDSASpecSupported) { |
| System.out.println("Test case passed: expected " |
| + "IllegalArgumentException is caught"); |
| } else { |
| throw new RuntimeException("Test case failed: unexpected " |
| + "IllegalArgumentException is thrown", e); |
| } |
| } |
| |
| return genParamSpec; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if (args == null || args.length < 2) { |
| throw new RuntimeException("Invalid number of arguments to generate" |
| + " DSA parameter."); |
| } |
| DataTuple dataTuple = null; |
| switch (args.length) { |
| case 3: |
| dataTuple = new DataTuple(Integer.valueOf(args[0]), |
| Integer.valueOf(args[1]), Boolean.valueOf(args[2])); |
| break; |
| case 2: |
| dataTuple = new DataTuple(Integer.valueOf(args[0]), |
| Integer.valueOf(args[1]), false); |
| break; |
| default: |
| throw new RuntimeException("Unsupported arguments found."); |
| } |
| testDSAGenParameterSpec(dataTuple); |
| |
| } |
| |
| private static class DataTuple { |
| |
| private int primePLen; |
| private int subprimeQLen; |
| private boolean isDSASpecSupported; |
| |
| private DataTuple(int primePLen, int subprimeQLen, |
| boolean isDSASpecSupported) { |
| this.primePLen = primePLen; |
| this.subprimeQLen = subprimeQLen; |
| this.isDSASpecSupported = isDSASpecSupported; |
| } |
| } |
| } |