1/*
2 * Copyright (C) 2009 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;
18
19import java.security.InvalidKeyException;
20import java.security.KeyPair;
21import java.security.NoSuchAlgorithmException;
22import java.security.PrivateKey;
23import java.security.PublicKey;
24import javax.crypto.KeyAgreement;
25import junit.framework.Assert;
26
27public class KeyAgreementHelper extends TestHelper<KeyPair> {
28
29    private final String algorithmName;
30
31    public KeyAgreementHelper(String algorithmName) {
32        this.algorithmName = algorithmName;
33    }
34
35    @Override public void test(KeyPair keyPair) {
36        test(keyPair.getPrivate(), keyPair.getPublic());
37    }
38
39    void test(PrivateKey encryptKey, PublicKey decryptKey) {
40
41        KeyAgreement keyAgreement = null;
42        try {
43            keyAgreement = KeyAgreement.getInstance(algorithmName);
44        } catch (NoSuchAlgorithmException e) {
45            Assert.fail(e.getMessage());
46        }
47
48        try {
49            keyAgreement.init(encryptKey);
50        } catch (InvalidKeyException e) {
51            Assert.fail(e.getMessage());
52        }
53        try {
54            keyAgreement.doPhase(decryptKey, true);
55        } catch (InvalidKeyException e) {
56            Assert.fail(e.getMessage());
57        } catch (IllegalStateException e) {
58            Assert.fail(e.getMessage());
59        }
60        Assert.assertNotNull("generated secret is null", keyAgreement
61                .generateSecret());
62
63    }
64}
65