1 /* 2 * Copyright (c) 2014, 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 import java.security.InvalidKeyException; 25 import java.security.NoSuchAlgorithmException; 26 import java.security.NoSuchProviderException; 27 import java.security.spec.InvalidParameterSpecException; 28 import java.util.Random; 29 import javax.crypto.BadPaddingException; 30 import javax.crypto.Cipher; 31 import javax.crypto.IllegalBlockSizeException; 32 import javax.crypto.KeyGenerator; 33 import javax.crypto.NoSuchPaddingException; 34 import javax.crypto.SecretKey; 35 import javax.crypto.ShortBufferException; 36 import javax.crypto.spec.GCMParameterSpec; 37 38 /** 39 * @test 40 * @bug 8043836 41 * @summary Test AES encryption with no padding. Expect the original data length 42 * is the same as the encrypted data. 43 * @key randomness 44 */ 45 public class TestNonexpanding { 46 47 private static final String ALGORITHM = "AES"; 48 private static final String PROVIDER = "SunJCE"; 49 private static final String[] MODES = { "ECb", "CbC", "OFB", "OFB150", 50 "cFB", "CFB7", "cFB8", "cFB16", "cFB24", "cFB32", "Cfb40", "cfB48", 51 "cfB56", "cfB64", "cfB72", "cfB80", "cfB88", "cfB96", "cfb104", 52 "cfB112", "cfB120", "GCM" }; 53 private static final String PADDING = "NoPadding"; 54 private static final int KEY_LENGTH = 128; 55 56 public static void main(String argv[]) throws Exception { 57 TestNonexpanding test = new TestNonexpanding(); 58 for (String mode : MODES) { 59 test.runTest(ALGORITHM, mode, PADDING); 60 } 61 } 62 63 public void runTest(String algo, String mo, String pad) throws Exception { 64 Cipher ci = null; 65 SecretKey key = null; 66 try { 67 // Initialization 68 Random rdm = new Random(); 69 byte[] plainText = new byte[128]; 70 rdm.nextBytes(plainText); 71 72 ci = Cipher.getInstance(algo + "/" + mo + "/" + pad, PROVIDER); 73 74 KeyGenerator kg = KeyGenerator.getInstance(algo, PROVIDER); 75 kg.init(KEY_LENGTH); 76 key = kg.generateKey(); 77 78 // encrypt 79 ci.init(Cipher.ENCRYPT_MODE, key); 80 byte[] cipherText = new byte[ci.getOutputSize(plainText.length)]; 81 int offset = ci.update(plainText, 0, plainText.length, cipherText, 82 0); 83 ci.doFinal(cipherText, offset); 84 85 // Comparison 86 if (!(plainText.length == cipherText.length)) { 87 // The result of encryption in GCM is a combination of an 88 // authentication tag and cipher text. 89 if (mo.equalsIgnoreCase("GCM")) { 90 GCMParameterSpec spec = ci.getParameters().getParameterSpec(GCMParameterSpec.class); 91 int cipherTextLength = cipherText.length - spec.getTLen() 92 / 8; 93 if (plainText.length == cipherTextLength) { 94 return; 95 } 96 } 97 System.out.println("Original length: " + plainText.length); 98 System.out.println("Cipher text length: " + cipherText.length); 99 throw new RuntimeException("Test failed!"); 100 } 101 } catch (NoSuchAlgorithmException e) { 102 //CFB7 and OFB150 are for negative testing 103 if (!mo.equalsIgnoreCase("CFB7") && !mo.equalsIgnoreCase("OFB150")) { 104 System.out.println("Unexpected NoSuchAlgorithmException with mode: " 105 + mo); 106 throw new RuntimeException("Test failed!"); 107 } 108 } catch ( NoSuchProviderException | NoSuchPaddingException 109 | InvalidKeyException | InvalidParameterSpecException 110 | ShortBufferException | IllegalBlockSizeException 111 | BadPaddingException e) { 112 System.out.println("Test failed!"); 113 throw e; 114 } 115 } 116 }