1/* 2 * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 4921443 27 * @summary Ensure ISO10126Padding works correctly. 28 * @author Valerie Peng 29 * @key randomness 30 */ 31import java.util.Arrays; 32import java.security.*; 33import java.security.spec.*; 34 35import javax.crypto.*; 36import javax.crypto.spec.*; 37import java.security.Provider; 38 39public class TestISO10126Padding { 40 private static final String ALGO = "AES"; 41 private static final String TRANS = "AES/ECB"; 42 private static final int KEYSIZE = 16; // in bytes 43 44 private SecretKey key; 45 46 private TestISO10126Padding() throws Exception { 47 // setup 48 KeyGenerator kg = KeyGenerator.getInstance(ALGO, "SunJCE"); 49 kg.init(KEYSIZE*8); 50 key = kg.generateKey(); 51 } 52 53 private void runTest(int dataLength) throws Exception { 54 // setup 55 byte[] data = new byte[dataLength]; 56 new SecureRandom().nextBytes(data); 57 System.out.println("Testing data length: " + dataLength); 58 59 // TEST#1 -- 60 // generate the cipher text using manually-supplied 61 // XML Encryption padding 62 Cipher ci = Cipher.getInstance(TRANS + "/NoPadding", "SunJCE"); 63 ci.init(Cipher.ENCRYPT_MODE, key); 64 byte[] paddedData = new byte[ci.getBlockSize()]; 65 System.arraycopy(data, 0, paddedData, 0, data.length); 66 int padValue = paddedData.length - data.length; 67 paddedData[paddedData.length-1] = (byte) padValue; 68 byte[] cipherText = ci.doFinal(paddedData); 69 70 // decrypt using ISO10126Padding 71 ci = Cipher.getInstance(TRANS + "/ISO10126Padding", "SunJCE"); 72 ci.init(Cipher.DECRYPT_MODE, key); 73 byte[] recovered = ci.doFinal(cipherText); 74 if (!Arrays.equals(data, recovered)) { 75 throw new Exception("TEST#1: decryption failed"); 76 } 77 // TEST#2 -- 78 // generate the cipher text using ISO10126Padding 79 ci = Cipher.getInstance(TRANS + "/ISO10126Padding", "SunJCE"); 80 ci.init(Cipher.ENCRYPT_MODE, key); 81 cipherText = ci.doFinal(data); 82 83 // decrypt using ISO10126Padding 84 ci.init(Cipher.DECRYPT_MODE, key); 85 recovered = ci.doFinal(cipherText); 86 if (!Arrays.equals(data, recovered)) { 87 throw new Exception("TEST#2: decryption failed"); 88 } 89 } 90 91 public static void main(String[] argv) throws Exception { 92 TestISO10126Padding test = new TestISO10126Padding(); 93 for (int i = 0; i<16; i++) { 94 test.runTest(i); 95 } 96 System.out.println("Test Passed"); 97 } 98} 99