1/*
2 * Copyright (C) 2012 Google Inc.
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 benchmarks.regression;
18
19import com.google.caliper.Param;
20import com.google.caliper.SimpleBenchmark;
21
22import java.io.ByteArrayInputStream;
23import java.io.InputStream;
24import java.security.KeyPair;
25import java.security.KeyPairGenerator;
26import java.security.spec.AlgorithmParameterSpec;
27
28import javax.crypto.CipherInputStream;
29import javax.crypto.KeyGenerator;
30import javax.crypto.SecretKey;
31
32import java.util.HashMap;
33import java.util.Map;
34
35import javax.crypto.Cipher;
36import javax.crypto.spec.IvParameterSpec;
37
38/**
39 * CipherInputStream benchmark.
40 */
41public class CipherInputStreamBenchmark extends SimpleBenchmark {
42
43    private static final int DATA_SIZE = 1024 * 1024;
44    private static final byte[] DATA = new byte[DATA_SIZE];
45
46    private static final int IV_SIZE = 16;
47    private static final byte[] IV = new byte[IV_SIZE];
48
49    static {
50        for (int i = 0; i < DATA_SIZE; i++) {
51            DATA[i] = (byte) i;
52        }
53        for (int i = 0; i < IV_SIZE; i++) {
54            IV[i] = (byte) i;
55        }
56    }
57
58    private SecretKey key;
59
60    private byte[] output = new byte[8192];
61
62    private Cipher cipherEncrypt;
63
64    private AlgorithmParameterSpec spec;
65
66    @Override protected void setUp() throws Exception {
67        KeyGenerator generator = KeyGenerator.getInstance("AES");
68        generator.init(128);
69        key = generator.generateKey();
70
71        spec = new IvParameterSpec(IV);
72
73        cipherEncrypt = Cipher.getInstance("AES/CBC/PKCS5Padding");
74        cipherEncrypt.init(Cipher.ENCRYPT_MODE, key, spec);
75    }
76
77    public void timeEncrypt(int reps) throws Exception {
78        for (int i = 0; i < reps; ++i) {
79            cipherEncrypt.init(Cipher.ENCRYPT_MODE, key, spec);
80            InputStream is = new CipherInputStream(new ByteArrayInputStream(DATA), cipherEncrypt);
81            while (is.read(output) != -1) {
82            }
83        }
84    }
85}
86