PKCS8EncodedKeySpecTest.java revision 561ee011997c6c2f1befbfaa9d5f0a99771c1d63 
1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18/**
19* @author Vladimir N. Molotkov
20*/
21
22package org.apache.harmony.security.tests.java.security.spec;
23
24import java.security.spec.EncodedKeySpec;
25import java.security.spec.PKCS8EncodedKeySpec;
26import java.util.Arrays;
27
28import junit.framework.TestCase;
29
30/**
31 * Tests for <code>PKCS8EncodedKeySpec</code> class fields and methods.
32 *
33 */
34public class PKCS8EncodedKeySpecTest extends TestCase {
35
36    /**
37     * Constructor for PKCS8EncodedKeySpecTest.
38     * @param name
39     */
40    public PKCS8EncodedKeySpecTest(String name) {
41        super(name);
42    }
43
44    //
45    // Tests
46    //
47
48    /**
49     * Test for <code>PKCS8EncodedKeySpec</code> constructor<br>
50     * Assertion: constructs new <code>PKCS8EncodedKeySpec</code>
51     * object using valid parameter
52     */
53    public final void testPKCS8EncodedKeySpec() {
54        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
55
56        EncodedKeySpec eks = new PKCS8EncodedKeySpec(encodedKey);
57
58        assertTrue(eks instanceof PKCS8EncodedKeySpec);
59    }
60
61    /**
62     * Test for <code>getEncoded()</code> method<br>
63     * Assertion: returns encoded key
64     */
65    public final void testGetEncoded() {
66        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
67
68        PKCS8EncodedKeySpec meks = new PKCS8EncodedKeySpec(encodedKey);
69
70        byte[] ek = meks.getEncoded();
71
72        assertTrue(Arrays.equals(encodedKey, ek));
73    }
74
75    /**
76     * Test for <code>getFormat()</code> method
77     * Assertion: returns format name (always "PKCS#8")
78     */
79    public final void testGetFormat() {
80        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
81
82        PKCS8EncodedKeySpec meks = new PKCS8EncodedKeySpec(encodedKey);
83
84        assertEquals("PKCS#8", meks.getFormat());
85    }
86
87    /**
88     * Tests that internal state of the object
89     * can not be changed by modifying initial
90     * array value
91     */
92    public final void testIsStatePreserved1() {
93        // Reference array
94        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
95        // Reference array's copy will be used for test
96        byte[] encodedKeyCopy = encodedKey.clone();
97
98        PKCS8EncodedKeySpec meks = new PKCS8EncodedKeySpec(encodedKeyCopy);
99
100        // Modify initial array's value
101        encodedKeyCopy[3] = (byte)5;
102
103        // Get encoded key
104        byte[] ek = meks.getEncoded();
105
106        // Check  using reference array that
107        // byte value has not been changed
108        assertTrue(Arrays.equals(encodedKey, ek));
109    }
110
111    /**
112     * Tests that internal state of the object
113     * can not be modified using returned value
114     * of <code>getEncoded()</code> method
115     */
116    public final void testIsStatePreserved2() {
117        // Reference array
118        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
119        // Reference array's copy will be used for test
120        byte[] encodedKeyCopy = encodedKey.clone();
121
122        PKCS8EncodedKeySpec meks = new PKCS8EncodedKeySpec(encodedKeyCopy);
123
124        byte[] ek = meks.getEncoded();
125
126        // Modify returned array
127        ek[3] = (byte)5;
128
129        // Get encoded key again
130        byte[] ek1 = meks.getEncoded();
131
132        // Check using reference array that
133        // byte value has not been changed
134        assertTrue(Arrays.equals(encodedKey, ek1));
135    }
136
137}
138