1 /*
2 * Copyright (c) 2015, 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 static java.lang.System.out;
25
26 import java.nio.ByteBuffer;
27 import java.security.MessageDigest;
28 import java.util.Random;
29
30 /**
31 * @test
32 * @bug 8050371
33 * @summary Check md.getDigestLength() equal digest output length with various
34 * algorithm/dataLen/(update,digest methods).
35 * @author Kevin Liu
36 */
37
38 public class TestSameLength {
39
40 public static void main(String[] args) throws Exception {
41 TestSameLength test = new TestSameLength();
42 test.run();
43 }
44
45 private void run() throws Exception {
46 String[] algorithmArr = {
47 "SHA", "Sha", "SHA-1", "sha-1", "SHA1", "sha1", "MD5", "md5",
48 "SHA-224", "SHA-256", "SHA-384", "SHA-512"
49 };
50 int[] nUpdatesArr = {
51 0, 1, 2, 3
52 };
53 int[] dataLenArr = {
54 1, 50, 2500, 125000, 6250000
55 };
56
57 for (String algorithm: algorithmArr) {
58 for (UpdateMethod update: UpdateMethod.values()) {
59 for (int dataLen: dataLenArr) {
60 if (!runTest(algorithm, dataLen, update)) {
61 throw new RuntimeException(
62 "Test failed at algorithm/dataLen/numUpdate:"
63 + algorithm + "/" + dataLen + "/"
64 + update.toString());
65 }
66 }
67 }
68 }
69
70 out.println("All " + algorithmArr.length * nUpdatesArr.length
71 * dataLenArr.length + " tests Passed");
72 }
73
74 private boolean runTest(String algo, long dataLen,
75 UpdateMethod whichUpdate) throws Exception {
76 try {
77 // Do initialization
78 byte[] data = new byte[(int) dataLen];
79 new Random().nextBytes(data);
80 MessageDigest md = MessageDigest.getInstance(algo);
81 int outputLen = md.getDigestLength();
82
83 // Perform the update using all available/possible update methods
84 whichUpdate.updateDigest(data, md, dataLen);
85 // Get the output
86 byte[] output = md.digest();
87
88 // Compare input and output
89 return outputLen == output.length;
90 } catch (Exception ex) {
91 System.err.println("Testing: " + algo + "/" + dataLen + "/"
92 + whichUpdate.toString()
93 + " failed with unexpected exception");
94 ex.printStackTrace();
95 throw ex;
96 }
97 }
98
99 private static enum UpdateMethod {
100 UPDATE_BYTE {
101 @Override
102 public void updateDigest(byte[] data,
103 MessageDigest md, long dataLen) {
104
105 for (int i = 0; i < dataLen; i++) {
106 md.update(data[i]);
107 }
108 }
109 },
110
111 UPDATE_BUFFER {
112 @Override
113 public void updateDigest(byte[] data,
114 MessageDigest md, long dataLen) {
115
116 md.update(data);
117 }
118 },
119
120 UPDATE_BUFFER_LEN {
121 @Override
122 public void updateDigest(byte[] data,
123 MessageDigest md, long dataLen) {
124
125 for (int i = 0; i < dataLen; i++) {
126 md.update(data, i, 1);
127 }
128 }
129 },
130
131 UPDATE_BYTE_BUFFER {
132 @Override
133 public void updateDigest(byte[] data,
134 MessageDigest md, long dataLen) {
135
136 md.update(ByteBuffer.wrap(data));
137 }
138 };
139
140 public abstract void updateDigest(byte[] data,
141 MessageDigest md, long dataLen);
142 }
143 }