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