1/*
2 * Copyright (c) 2016, 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/* @test
25 * @bug 8051408 8158534
26 * @summary Make sure DrbgParameters coded as specified
27 * @library /test/lib
28 */
29
30import jdk.test.lib.Asserts;
31
32import java.security.DrbgParameters;
33import java.util.Arrays;
34
35import static java.security.DrbgParameters.Capability.*;
36
37public class DrbgParametersSpec {
38
39    public static void main(String args[]) throws Exception {
40
41        byte[] p, np1, np2;
42
43        // Capability
44        Asserts.assertTrue(PR_AND_RESEED.supportsPredictionResistance());
45        Asserts.assertTrue(PR_AND_RESEED.supportsReseeding());
46        Asserts.assertFalse(RESEED_ONLY.supportsPredictionResistance());
47        Asserts.assertTrue(RESEED_ONLY.supportsReseeding());
48        Asserts.assertFalse(NONE.supportsPredictionResistance());
49        Asserts.assertFalse(NONE.supportsReseeding());
50
51        // Instantiation
52        p = "Instantiation".getBytes();
53        DrbgParameters.Instantiation ins = DrbgParameters
54                .instantiation(192, RESEED_ONLY, p);
55        Asserts.assertTrue(ins.getStrength() == 192);
56        Asserts.assertTrue(ins.getCapability() == RESEED_ONLY);
57        np1 = ins.getPersonalizationString();
58        np2 = ins.getPersonalizationString();
59        // Getter outputs have same content but not the same object
60        Asserts.assertTrue(Arrays.equals(np1, p));
61        Asserts.assertTrue(Arrays.equals(np2, p));
62        Asserts.assertNE(np1, np2);
63        // Changes to original input has no affect on object
64        p[0] = 'X';
65        np2 = ins.getPersonalizationString();
66        Asserts.assertTrue(Arrays.equals(np1, np2));
67
68        ins = DrbgParameters.instantiation(-1, NONE, null);
69        Asserts.assertNull(ins.getPersonalizationString());
70
71        iae(() -> DrbgParameters.instantiation(-2, NONE, null));
72        npe(() -> DrbgParameters.instantiation(-1, null, null));
73
74        // NextBytes
75        p = "NextBytes".getBytes();
76        DrbgParameters.NextBytes nb = DrbgParameters
77                .nextBytes(192, true, p);
78        Asserts.assertTrue(nb.getStrength() == 192);
79        Asserts.assertTrue(nb.getPredictionResistance());
80        np1 = nb.getAdditionalInput();
81        np2 = nb.getAdditionalInput();
82        // Getter outputs have same content but not the same object
83        Asserts.assertTrue(Arrays.equals(np1, p));
84        Asserts.assertTrue(Arrays.equals(np2, p));
85        Asserts.assertNE(np1, np2);
86        // Changes to original input has no affect on object
87        p[0] = 'X';
88        np2 = nb.getAdditionalInput();
89        Asserts.assertTrue(Arrays.equals(np1, np2));
90
91        iae(() -> DrbgParameters.nextBytes(-2, false, null));
92
93        // Reseed
94        p = "Reseed".getBytes();
95        DrbgParameters.Reseed rs = DrbgParameters
96                .reseed(true, p);
97        Asserts.assertTrue(rs.getPredictionResistance());
98        np1 = rs.getAdditionalInput();
99        np2 = rs.getAdditionalInput();
100        // Getter outputs have same content but not the same object
101        Asserts.assertTrue(Arrays.equals(np1, p));
102        Asserts.assertTrue(Arrays.equals(np2, p));
103        Asserts.assertNE(np1, np2);
104        // Changes to original input has no affect on object
105        p[0] = 'X';
106        np2 = rs.getAdditionalInput();
107        Asserts.assertTrue(Arrays.equals(np1, np2));
108    }
109
110    static void iae(RunnableWithException r) throws Exception {
111        checkException(r, IllegalArgumentException.class);
112    }
113
114    static void npe(RunnableWithException r) throws Exception {
115        checkException(r, NullPointerException.class);
116    }
117
118    interface RunnableWithException {
119        void run() throws Exception;
120    }
121
122    static void checkException(RunnableWithException r, Class ex)
123            throws Exception {
124        try {
125            r.run();
126        } catch (Exception e) {
127            if (ex.isAssignableFrom(e.getClass())) {
128                return;
129            }
130            throw e;
131        }
132        throw new Exception("No exception thrown");
133    }
134}
135