| /* |
| * Copyright (c) 2015, 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.KeyFactory; |
| import java.security.KeyPair; |
| import java.security.KeyPairGenerator; |
| import java.security.PrivateKey; |
| import java.security.PublicKey; |
| import java.security.interfaces.RSAKey; |
| import java.security.interfaces.RSAPrivateKey; |
| import java.security.interfaces.RSAPublicKey; |
| import java.security.spec.RSAPrivateKeySpec; |
| import java.security.spec.RSAPublicKeySpec; |
| |
| /** |
| * @test |
| * @bug 8044199 |
| * @summary test if the private and public key size are the same as what is set |
| * through KeyPairGenerator. |
| * @run main KeySizeTest 512 10 |
| * @run main KeySizeTest 768 10 |
| * @run main KeySizeTest 1024 10 |
| * @run main KeySizeTest 2048 5 |
| * @run main KeySizeTest 4096 1 |
| */ |
| public class KeySizeTest { |
| |
| /** |
| * ALGORITHM name, fixed as RSA. |
| */ |
| private static final String KEYALG = "RSA"; |
| |
| /** |
| * JDK default RSA Provider. |
| */ |
| private static final String PROVIDER_NAME = "SunRsaSign"; |
| |
| public static void main(String[] args) throws Exception { |
| int iKeyPairSize = Integer.parseInt(args[0]); |
| int maxLoopCnt = Integer.parseInt(args[1]); |
| |
| int failCount = 0; |
| KeyPairGenerator keyPairGen |
| = KeyPairGenerator.getInstance(KEYALG, PROVIDER_NAME); |
| keyPairGen.initialize(iKeyPairSize); |
| // Generate RSA keypair |
| KeyPair keyPair = keyPairGen.generateKeyPair(); |
| |
| // Get priavte and public keys |
| PrivateKey privateKey = keyPair.getPrivate(); |
| PublicKey publicKey = keyPair.getPublic(); |
| try { |
| if (!sizeTest(keyPair)) { |
| failCount++; |
| } |
| } catch (Exception ex) { |
| ex.printStackTrace(System.err); |
| failCount++; |
| } |
| |
| for (int iCnt = 0; iCnt < maxLoopCnt; iCnt++) { |
| |
| // Get keysize (modulus) of keys |
| KeyFactory keyFact = KeyFactory.getInstance(KEYALG, PROVIDER_NAME); |
| |
| // Comparing binary length. |
| RSAPrivateKeySpec privateKeySpec |
| = (RSAPrivateKeySpec) keyFact.getKeySpec(privateKey, |
| RSAPrivateKeySpec.class); |
| int iPrivateKeySize = privateKeySpec.getModulus().bitLength(); |
| |
| RSAPublicKeySpec publicKeySpec |
| = (RSAPublicKeySpec) keyFact.getKeySpec(publicKey, |
| RSAPublicKeySpec.class); |
| int iPublicKeySize = publicKeySpec.getModulus().bitLength(); |
| |
| if ((iKeyPairSize != iPublicKeySize) || (iKeyPairSize != iPrivateKeySize)) { |
| System.err.println("iKeyPairSize : " + iKeyPairSize); |
| System.err.println("Generated a " + iPrivateKeySize |
| + " bit RSA private key"); |
| System.err.println("Generated a " + iPublicKeySize |
| + " bit RSA public key"); |
| failCount++; |
| } |
| } |
| |
| if (failCount > 0) { |
| throw new RuntimeException("There are " + failCount + " tests failed."); |
| } |
| } |
| |
| /** |
| * @param kpair test key pair. |
| * @return true if test passed. false if test failed. |
| */ |
| private static boolean sizeTest(KeyPair kpair) { |
| RSAPrivateKey priv = (RSAPrivateKey) kpair.getPrivate(); |
| RSAPublicKey pub = (RSAPublicKey) kpair.getPublic(); |
| |
| // test the getModulus method |
| if ((priv instanceof RSAKey) && (pub instanceof RSAKey)) { |
| if (!priv.getModulus().equals(pub.getModulus())) { |
| System.err.println("priv.getModulus() = " + priv.getModulus()); |
| System.err.println("pub.getModulus() = " + pub.getModulus()); |
| return false; |
| } |
| } |
| return true; |
| } |
| } |