| /* |
| * Copyright (c) 2007, 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.AlgorithmParameters; |
| import java.security.Key; |
| import java.util.Arrays; |
| import javax.crypto.SecretKey; |
| import javax.crypto.Cipher; |
| import javax.crypto.KeyGenerator; |
| |
| /* |
| * @test |
| * @bug 8048596 |
| * @summary Check if a key wrapper works properly with GCM mode |
| */ |
| public class KeyWrapper { |
| |
| static final String AES = "AES"; |
| static final String TRANSFORMATION = "AES/GCM/NoPadding"; |
| static final String PROVIDER = "SunJCE"; |
| static final int KEY_LENGTH = 128; |
| |
| public static void main(String argv[]) throws Exception { |
| doTest(PROVIDER, TRANSFORMATION); |
| } |
| |
| private static void doTest(String provider, String algo) throws Exception { |
| SecretKey key; |
| SecretKey keyToWrap; |
| |
| // init a secret Key |
| KeyGenerator kg = KeyGenerator.getInstance(AES, PROVIDER); |
| kg.init(KEY_LENGTH); |
| key = kg.generateKey(); |
| keyToWrap = kg.generateKey(); |
| |
| // initialization |
| Cipher cipher = Cipher.getInstance(algo, provider); |
| cipher.init(Cipher.WRAP_MODE, key); |
| AlgorithmParameters params = cipher.getParameters(); |
| |
| // wrap the key |
| byte[] keyWrapper = cipher.wrap(keyToWrap); |
| try { |
| // check if we can't wrap it again with the same key/IV |
| keyWrapper = cipher.wrap(keyToWrap); |
| throw new RuntimeException( |
| "FAILED: expected IllegalStateException hasn't " |
| + "been thrown "); |
| } catch (IllegalStateException ise) { |
| System.out.println(ise.getMessage()); |
| System.out.println("Expected exception"); |
| } |
| |
| // unwrap the key |
| cipher.init(Cipher.UNWRAP_MODE, key, params); |
| cipher.unwrap(keyWrapper, algo, Cipher.SECRET_KEY); |
| |
| // check if we can unwrap second time |
| Key unwrapKey = cipher.unwrap(keyWrapper, algo, Cipher.SECRET_KEY); |
| |
| if (!Arrays.equals(keyToWrap.getEncoded(), unwrapKey.getEncoded())) { |
| throw new RuntimeException( |
| "FAILED: original and unwrapped keys are not equal"); |
| } |
| } |
| } |