1/*
2 * Copyright (C) 2008 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 */
16package org.apache.harmony.crypto.tests.javax.crypto.func;
17
18
19import java.security.Key;
20import java.security.NoSuchAlgorithmException;
21import java.security.SecureRandom;
22
23import javax.crypto.Cipher;
24import javax.crypto.KeyGenerator;
25import javax.crypto.spec.IvParameterSpec;
26
27public class CipherSymmetricKeyThread extends CipherThread {
28    CipherSymmetricKeyThread(String name, int[] keys, String[] modes, String[] paddings) {
29        super(name, keys, modes, paddings);
30    }
31
32
33    @Override
34    public void crypt() throws Exception {
35        byte[] output = new byte[128];
36        byte[] decrypted = new byte[128];
37        byte[] input  =  getData().getBytes();
38        SecureRandom sr = new SecureRandom();
39        byte[] iv = null;//new byte[16];
40        int outputSize = 0;
41
42        KeyGenerator kg = KeyGenerator.getInstance(getAlgName());
43        kg.init(getKeyLength(), new SecureRandom());
44        Key key = kg.generateKey();
45
46        Cipher cip = Cipher.getInstance(getAlgName() + "/" + getMode() + "/" +
47                    getPadding());
48        if (getAlgName() != "AES") {
49            iv = new byte[8];
50        } else {
51            iv = new byte[16];
52        }
53        sr.nextBytes(iv);
54        IvParameterSpec ivspec = new IvParameterSpec(iv);
55        if (getMode() != "ECB") {
56            cip.init(Cipher.ENCRYPT_MODE, key, ivspec);
57            cip.doFinal(input, 0, input.length, output);
58            outputSize = cip.getOutputSize(input.length);
59            iv = cip.getIV();
60            ivspec = new IvParameterSpec(iv);
61            cip.init(Cipher.DECRYPT_MODE, key, ivspec);
62            cip.doFinal(output, 0, outputSize, decrypted);
63        } else {
64            cip.init(Cipher.ENCRYPT_MODE, key);
65            cip.doFinal(input, 0, input.length, output);
66            outputSize = cip.getOutputSize(input.length);
67            cip.init(Cipher.DECRYPT_MODE, key);
68            cip.doFinal(output, 0, outputSize, decrypted);
69        }
70
71        checkEncodedData(getData().getBytes(), decrypted);
72    }
73}
74