File: MacSameTest.java

package info (click to toggle)
openjdk-11 11.0.4%2B11-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 757,028 kB
  • sloc: java: 5,016,041; xml: 1,191,974; cpp: 934,731; ansic: 555,697; sh: 24,299; objc: 12,703; python: 3,602; asm: 3,415; makefile: 2,772; awk: 351; sed: 172; perl: 114; jsp: 24; csh: 3
file content (101 lines) | stat: -rw-r--r-- 3,621 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
/*
 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.SecureRandom;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

/**
 * @test
 * @bug 8048603
 * @summary Check if doFinal and update operation result in same Mac
 * @author Yu-Ching Valerie Peng, Bill Situ, Alexander Fomin
 * @build Utils
 * @run main MacSameTest
 * @key randomness
 */
public class MacSameTest implements MacTest {

    private static final int MESSAGE_SIZE = 25;
    private static final int OFFSET = 5;
    private static final int KEY_SIZE = 70;

    /**
     * Initialize a message, instantiate a Mac object,
     * initialize the object with a SecretKey,
     * feed the message into the Mac object
     * all at once and get the output MAC as result1.
     * Reset the Mac object, chop the message into three pieces,
     * feed into the Mac object sequentially, and get the output MAC as result2.
     * Finally, compare result1 and result2 and see if they are the same.
     *
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Utils.runTests(new MacSameTest());
    }

    @Override
    public void doTest(String algo) throws NoSuchAlgorithmException,
            NoSuchProviderException, InvalidKeyException {
        Mac mac;
        try {
            mac = Mac.getInstance(algo, "SunJCE");
        } catch (NoSuchAlgorithmException nsae) {
            // depending on Solaris configuration,
            // it can support HMAC or not with Mac
            System.out.println("Expected NoSuchAlgorithmException thrown: "
                    + nsae);
            return;
        }

        byte[] plain = new byte[MESSAGE_SIZE];
        for (int i = 0; i < MESSAGE_SIZE; i++) {
            plain[i] = (byte) (i % 256);
        }

        byte[] tail = new byte[plain.length - OFFSET];
        System.arraycopy(plain, OFFSET, tail, 0, tail.length);

        SecureRandom srdm = new SecureRandom();
        byte[] keyVal = new byte[KEY_SIZE];
        srdm.nextBytes(keyVal);
        SecretKeySpec keySpec = new SecretKeySpec(keyVal, "HMAC");

        mac.init(keySpec);
        byte[] result1 = mac.doFinal(plain);

        mac.reset();
        mac.update(plain[0]);
        mac.update(plain, 1, OFFSET - 1);
        byte[] result2 = mac.doFinal(tail);

        if (!java.util.Arrays.equals(result1, result2)) {
            throw new RuntimeException("result1 and result2 are not the same");
        }
    }

}