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.InvalidAlgorithmParameterException; 25 import java.security.InvalidKeyException; 26 import java.security.NoSuchAlgorithmException; 27 import java.security.NoSuchProviderException; 28 import java.security.spec.AlgorithmParameterSpec; 29 import java.util.Arrays; 30 import java.util.Random; 31 import javax.crypto.BadPaddingException; 32 import javax.crypto.Cipher; 33 import javax.crypto.IllegalBlockSizeException; 34 import javax.crypto.KeyGenerator; 35 import javax.crypto.NoSuchPaddingException; 36 import javax.crypto.SecretKey; 37 import javax.crypto.ShortBufferException; 38 import javax.crypto.spec.IvParameterSpec; 39 40 41 /** 42 * @test 43 * @bug 8043836 44 * @summary Test AES ciphers with 4 different modes with NoPadding. Check if 45 * data before encryption and after decryption is the same. 46 * @key randomness 47 */ 48 49 public class CTR { 50 51 private static final String ALGORITHM = "AES"; 52 53 private static final String PROVIDER = "SunJCE"; 54 55 private static final String[] MODES = {"CTR","CFB24","OFB32","GCM"}; 56 57 private static final String PADDING = "NoPadding"; 58 59 60 private static final int KEY_LENGTH = 128; 61 62 public static void main(String argv[]) throws Exception { 63 CTR test = new CTR(); 64 for (String mode : MODES) { 65 test.runTest(ALGORITHM, mode, PADDING); 66 } 67 } 68 69 70 public void runTest(String algo, String mo, String pad) throws Exception { 71 Cipher ci = null; 72 byte[] iv = null; 73 AlgorithmParameterSpec aps = null; 74 SecretKey key = null; 75 76 try { 77 Random rdm = new Random(); 78 byte[] plainText; 79 80 ci = Cipher.getInstance(algo + "/" + mo + "/" + pad, PROVIDER); 81 KeyGenerator kg = KeyGenerator.getInstance(algo, PROVIDER); 82 kg.init(KEY_LENGTH); 83 key = kg.generateKey(); 84 85 for (int i = 0; i < 15; i++) { 86 plainText = new byte[1600 + i + 1]; 87 rdm.nextBytes(plainText); 88 89 if (!mo.equalsIgnoreCase("GCM")) { 90 ci.init(Cipher.ENCRYPT_MODE, key, aps); 91 } else { 92 ci.init(Cipher.ENCRYPT_MODE, key); 93 } 94 95 byte[] cipherText = new byte[ci.getOutputSize(plainText.length)]; 96 int offset = ci.update(plainText, 0, plainText.length, 97 cipherText, 0); 98 99 ci.doFinal(cipherText, offset); 100 101 if (!mo.equalsIgnoreCase("ECB")) { 102 iv = ci.getIV(); 103 aps = new IvParameterSpec(iv); 104 } else { 105 aps = null; 106 } 107 108 if (!mo.equalsIgnoreCase("GCM")) { 109 ci.init(Cipher.DECRYPT_MODE, key, aps); 110 } else { 111 ci.init(Cipher.DECRYPT_MODE, key, ci.getParameters()); 112 } 113 114 byte[] recoveredText = new byte[ci.getOutputSize(cipherText.length)]; 115 int len = ci.doFinal(cipherText, 0, cipherText.length, 116 recoveredText); 117 byte[] tmp = new byte[len]; 118 119 for (int j = 0; j < len; j++) { 120 tmp[j] = recoveredText[j]; 121 } 122 Arrays.toString(plainText); 123 if (!java.util.Arrays.equals(plainText, tmp)) { 124 System.out.println("Original: "); 125 dumpBytes(plainText); 126 System.out.println("Recovered: "); 127 dumpBytes(tmp); 128 throw new RuntimeException("Original text is not equal with recovered text, with mode:" + mo); 129 } 130 } 131 } catch (NoSuchAlgorithmException | NoSuchProviderException | NoSuchPaddingException 132 | InvalidKeyException | InvalidAlgorithmParameterException 133 | ShortBufferException | IllegalBlockSizeException 134 | BadPaddingException e) { 135 System.out.println("Test failed!"); 136 throw e; 137 } 138 } 139 140 private void dumpBytes(byte[] bytes){ 141 for (byte b : bytes){ 142 System.out.print(Integer.toHexString(b)); 143 } 144 System.out.println(); 145 } 146 }