DSAKeyPairGeneratorTest.java revision cec4dd4b1d33f78997603d0f89c0d0e56e64dbcd 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package tests.security.interfaces;
18
19import dalvik.annotation.TestLevel;
20import dalvik.annotation.TestTargetNew;
21import dalvik.annotation.TestTargetClass;
22
23import junit.framework.TestCase;
24
25import java.math.BigInteger;
26import java.security.interfaces.DSAKeyPairGenerator;
27import java.security.interfaces.DSAParams;
28import java.security.SecureRandom;
29import java.security.spec.DSAParameterSpec;
30import java.security.InvalidParameterException;
31
32import org.apache.harmony.security.tests.support.interfaces.DSAKeyPairGeneratorImpl;
33
34@TestTargetClass(DSAKeyPairGenerator.class)
35public class DSAKeyPairGeneratorTest extends TestCase {
36
37    private final BigInteger p = new BigInteger("4");
38    private final BigInteger q = BigInteger.TEN;
39    private final BigInteger g = BigInteger.ZERO;
40
41
42    class MyDSA extends DSAKeyPairGeneratorImpl {
43        public MyDSA(DSAParams dsaParams) {
44            super(dsaParams);
45        }
46    }
47
48    /**
49     * @tests java.security.interfaces.DSAKeyPairGenerator
50     * #initialize(DSAParams params, SecureRandom random)
51     */
52    @TestTargetNew(
53        level = TestLevel.COMPLETE,
54        notes = "",
55        method = "initialize",
56        args = {java.security.interfaces.DSAParams.class, java.security.SecureRandom.class}
57    )
58    public void test_DSAKeyPairGenerator01() {
59        DSAParams dsaParams = new DSAParameterSpec(p, q, g);
60        SecureRandom random = null;
61        MyDSA dsa = new MyDSA(dsaParams);
62        try {
63            random = SecureRandom.getInstance("SHA1PRNG");
64        } catch (Exception e) {
65            fail("Unexpected exception for SecureRandom: " + e);
66        }
67
68        try {
69            dsa.initialize(dsaParams, random);
70        } catch (Exception e) {
71            fail("Unexpected exception: " + e);
72        }
73
74        try {
75            dsa.initialize(dsaParams, null);
76            fail("InvalidParameterException was not thrown");
77        } catch (InvalidParameterException ipe) {
78            //expected
79        } catch (Exception e) {
80            fail(e + " was thrown instead of InvalidParameterException");
81        }
82        try {
83            dsa.initialize(null, random);
84            fail("InvalidParameterException was not thrown");
85        } catch (InvalidParameterException ipe) {
86            //expected
87        } catch (Exception e) {
88            fail(e + " was thrown instead of InvalidParameterException");
89        }
90    }
91
92    /**
93     * @tests java.security.interfaces.DSAKeyPairGenerator
94     * #initialize(int modlen, boolean genParams, SecureRandom randomm)
95     */
96    @TestTargetNew(
97        level = TestLevel.COMPLETE,
98        notes = "",
99        method = "initialize",
100        args = {int.class, boolean.class, java.security.SecureRandom.class}
101    )
102    public void test_DSAKeyPairGenerator02() {
103        int[] invalidLen = {-1, 0, 511, 513, 650, 1023, 1025};
104        DSAParams dsaParams = new DSAParameterSpec(p, q, g);
105        SecureRandom random = null;
106        MyDSA dsa = new MyDSA(null);
107        try {
108            random = SecureRandom.getInstance("SHA1PRNG");
109        } catch (Exception e) {
110            fail("Unexpected exception for SecureRandom: " + e);
111        }
112
113        //exception case
114        try {
115            dsa.initialize(520, false, random);
116            fail("InvalidParameterException was not thrown");
117        } catch (InvalidParameterException ipe) {
118            String str = ipe.getMessage();
119            if (!str.equals("there are not precomputed parameters")) {
120                fail("Incorrect exception's message: " + str);
121            }
122        } catch (Exception e) {
123            fail(e + " was thrown instead of InvalidParameterException");
124        }
125
126        //exception case
127        for (int i = 0; i < invalidLen.length; i++) {
128            try {
129                dsa.initialize(invalidLen[i], true, random);
130                fail("InvalidParameterException was not thrown");
131            } catch (InvalidParameterException ipe) {
132                String str = ipe.getMessage();
133                if (!str.equals("Incorrect modlen")) {
134                    fail("Incorrect exception's message: " + str);
135                }
136            } catch (Exception e) {
137                fail(e + " was thrown instead of InvalidParameterException");
138            }
139        }
140
141        //positive case
142        dsa = new MyDSA(dsaParams);
143        try {
144            dsa.initialize(520, true, random);
145        } catch (Exception e) {
146            fail(e + " was thrown for subcase 1");
147        }
148
149        //positive case
150        try {
151            dsa.initialize(520, false, random);
152        } catch (Exception e) {
153            fail(e + " was thrown for subcase 1");
154        }
155    }
156}
157