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.Random; 30 import javax.crypto.BadPaddingException; 31 import javax.crypto.Cipher; 32 import javax.crypto.IllegalBlockSizeException; 33 import javax.crypto.KeyGenerator; 34 import javax.crypto.NoSuchPaddingException; 35 import javax.crypto.SecretKey; 36 import javax.crypto.ShortBufferException; 37 import javax.crypto.spec.IvParameterSpec; 38 39 /** 40 * @test 41 * @bug 8043836 42 * @summary Test AES ciphers with different modes and padding schemes (ECB mode 43 * doesn't use IV). The test tries 3 different read methods of 44 * CipherInputStream. 45 */ 46 public class Padding { 47 48 private static final String ALGORITHM = "AES"; 49 private static final String PROVIDER = "SunJCE"; 50 private static final String[] MODES = { "ECb", "CbC", "PCBC", "OFB", 51 "OFB150", "cFB", "CFB7", "cFB8", "cFB16", "cFB24", "cFB32", 52 "Cfb40", "cfB48", "cfB56", "cfB64", "cfB72", "cfB80", "cfB88", 53 "cfB96", "cfb104", "cfB112", "cfB120", "OFB8", "OFB16", "OFB24", 54 "OFB32", "OFB40", "OFB48", "OFB56", "OFB64", "OFB72", "OFB80", 55 "OFB88", "OFB96", "OFB104", "OFB112", "OFB120", "GCM" }; 56 private static final String PADDING = "PKCS5Padding"; 57 private static final int KEY_LENGTH = 128; 58 59 public static void main(String argv[]) throws Exception { 60 Padding test = new Padding(); 61 for (String mode : MODES) { 62 test.runTest(ALGORITHM, mode, PADDING); 63 } 64 } 65 66 public void runTest(String algo, String mo, String pad) throws Exception { 67 Cipher ci = null; 68 byte[] iv = null; 69 AlgorithmParameterSpec aps = null; 70 SecretKey key = null; 71 try { 72 Random rdm = new Random(); 73 byte[] plainText; 74 75 ci = Cipher.getInstance(algo + "/" + mo + "/" + pad, PROVIDER); 76 KeyGenerator kg = KeyGenerator.getInstance(algo, PROVIDER); 77 kg.init(KEY_LENGTH); 78 key = kg.generateKey(); 79 80 for (int i = 0; i < 15; i++) { 81 plainText = new byte[1600 + i + 1]; 82 rdm.nextBytes(plainText); 83 84 if (!mo.equalsIgnoreCase("GCM")) { 85 ci.init(Cipher.ENCRYPT_MODE, key, aps); 86 } else { 87 ci.init(Cipher.ENCRYPT_MODE, key); 88 } 89 90 byte[] cipherText = new byte[ci.getOutputSize(plainText.length)]; 91 int offset = ci.update(plainText, 0, plainText.length, 92 cipherText, 0); 93 ci.doFinal(cipherText, offset); 94 95 if (!mo.equalsIgnoreCase("ECB")) { 96 iv = ci.getIV(); 97 aps = new IvParameterSpec(iv); 98 } else { 99 aps = null; 100 } 101 102 if (!mo.equalsIgnoreCase("GCM")) { 103 ci.init(Cipher.DECRYPT_MODE, key, aps); 104 } else { 105 ci.init(Cipher.DECRYPT_MODE, key, ci.getParameters()); 106 } 107 108 byte[] recoveredText = new byte[ci.getOutputSize(cipherText.length)]; 109 int len = ci.doFinal(cipherText, 0, cipherText.length, 110 recoveredText); 111 byte[] tmp = new byte[len]; 112 113 for (int j = 0; j < len; j++) { 114 tmp[j] = recoveredText[j]; 115 } 116 117 if (!java.util.Arrays.equals(plainText, tmp)) { 118 System.out.println("Original: "); 119 dumpBytes(plainText); 120 System.out.println("Recovered: "); 121 dumpBytes(tmp); 122 throw new RuntimeException( 123 "Original text is not equal with recovered text, with mode:" 124 + mo); 125 } 126 } 127 } catch (NoSuchAlgorithmException e) { 128 //CFB7 and OFB150 are for negative testing 129 if (!mo.equalsIgnoreCase("CFB7") && !mo.equalsIgnoreCase("OFB150")) { 130 System.out 131 .println("Unexpected NoSuchAlgorithmException with mode: " 132 + mo); 133 throw new RuntimeException("Test failed!"); 134 } 135 } catch ( NoSuchProviderException | NoSuchPaddingException 136 | InvalidKeyException | InvalidAlgorithmParameterException 137 | ShortBufferException | IllegalBlockSizeException 138 | BadPaddingException e) { 139 System.out.println("Test failed!"); 140 throw e; 141 } 142 } 143 144 private void dumpBytes(byte[] bytes) { 145 for (byte b : bytes) { 146 System.out.print(Integer.toHexString(b)); 147 } 148 149 System.out.println(); 150 } 151 }