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 }