| /* |
| * Copyright (c) 2014, 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.InvalidKeyException; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.NoSuchProviderException; |
| import java.security.spec.InvalidParameterSpecException; |
| import java.util.Random; |
| import javax.crypto.BadPaddingException; |
| import javax.crypto.Cipher; |
| import javax.crypto.IllegalBlockSizeException; |
| import javax.crypto.KeyGenerator; |
| import javax.crypto.NoSuchPaddingException; |
| import javax.crypto.SecretKey; |
| import javax.crypto.ShortBufferException; |
| import javax.crypto.spec.GCMParameterSpec; |
| |
| /** |
| * @test |
| * @bug 8043836 |
| * @summary Test AES encryption with no padding. Expect the original data length |
| * is the same as the encrypted data. |
| * @key randomness |
| */ |
| public class TestNonexpanding { |
| |
| private static final String ALGORITHM = "AES"; |
| private static final String PROVIDER = "SunJCE"; |
| private static final String[] MODES = { "ECb", "CbC", "OFB", "OFB150", |
| "cFB", "CFB7", "cFB8", "cFB16", "cFB24", "cFB32", "Cfb40", "cfB48", |
| "cfB56", "cfB64", "cfB72", "cfB80", "cfB88", "cfB96", "cfb104", |
| "cfB112", "cfB120", "GCM" }; |
| private static final String PADDING = "NoPadding"; |
| private static final int KEY_LENGTH = 128; |
| |
| public static void main(String argv[]) throws Exception { |
| TestNonexpanding test = new TestNonexpanding(); |
| for (String mode : MODES) { |
| test.runTest(ALGORITHM, mode, PADDING); |
| } |
| } |
| |
| public void runTest(String algo, String mo, String pad) throws Exception { |
| Cipher ci = null; |
| SecretKey key = null; |
| try { |
| // Initialization |
| Random rdm = new Random(); |
| byte[] plainText = new byte[128]; |
| rdm.nextBytes(plainText); |
| |
| ci = Cipher.getInstance(algo + "/" + mo + "/" + pad, PROVIDER); |
| |
| KeyGenerator kg = KeyGenerator.getInstance(algo, PROVIDER); |
| kg.init(KEY_LENGTH); |
| key = kg.generateKey(); |
| |
| // encrypt |
| ci.init(Cipher.ENCRYPT_MODE, key); |
| byte[] cipherText = new byte[ci.getOutputSize(plainText.length)]; |
| int offset = ci.update(plainText, 0, plainText.length, cipherText, |
| 0); |
| ci.doFinal(cipherText, offset); |
| |
| // Comparison |
| if (!(plainText.length == cipherText.length)) { |
| // The result of encryption in GCM is a combination of an |
| // authentication tag and cipher text. |
| if (mo.equalsIgnoreCase("GCM")) { |
| GCMParameterSpec spec = ci.getParameters().getParameterSpec(GCMParameterSpec.class); |
| int cipherTextLength = cipherText.length - spec.getTLen() |
| / 8; |
| if (plainText.length == cipherTextLength) { |
| return; |
| } |
| } |
| System.out.println("Original length: " + plainText.length); |
| System.out.println("Cipher text length: " + cipherText.length); |
| throw new RuntimeException("Test failed!"); |
| } |
| } catch (NoSuchAlgorithmException e) { |
| //CFB7 and OFB150 are for negative testing |
| if (!mo.equalsIgnoreCase("CFB7") && !mo.equalsIgnoreCase("OFB150")) { |
| System.out.println("Unexpected NoSuchAlgorithmException with mode: " |
| + mo); |
| throw new RuntimeException("Test failed!"); |
| } |
| } catch ( NoSuchProviderException | NoSuchPaddingException |
| | InvalidKeyException | InvalidParameterSpecException |
| | ShortBufferException | IllegalBlockSizeException |
| | BadPaddingException e) { |
| System.out.println("Test failed!"); |
| throw e; |
| } |
| } |
| } |