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/share/classes
28 */
29
30 import jdk.test.lib.Asserts;
31
32 import java.security.DrbgParameters;
33 import java.util.Arrays;
34
35 import static java.security.DrbgParameters.Capability.*;
36
37 public 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 }