DigestBenchmark.java revision 5a7833b406bb2716b057d3ed923f22f1f86b2a20 
1/*
2 * Copyright (C) 2010 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;
21import com.android.org.bouncycastle.crypto.Digest;
22
23public class DigestBenchmark extends SimpleBenchmark {
24
25    private static final int DATA_SIZE = 8192;
26    private static final byte[] DATA = new byte[DATA_SIZE];
27    static {
28        for (int i = 0; i < DATA_SIZE; i++) {
29            DATA[i] = (byte)i;
30        }
31    }
32
33    @Param private Algorithm algorithm;
34
35    public enum Algorithm { MD5, SHA1, SHA256,  SHA384, SHA512 };
36
37    @Param private Implementation implementation;
38
39    public enum Implementation { OPENSSL, BOUNCYCASTLE };
40
41    private Class<? extends Digest> digestClass;
42
43    @Override protected void setUp() throws Exception {
44        String className = "com.android.org.bouncycastle.crypto.digests.";
45        switch (implementation) {
46            case OPENSSL:
47                className += ("OpenSSLDigest$" + algorithm);
48                break;
49            case BOUNCYCASTLE:
50                className += (algorithm + "Digest");
51                break;
52            default:
53                throw new RuntimeException(implementation.toString());
54        }
55        this.digestClass = (Class<? extends Digest>)Class.forName(className);
56    }
57
58    public void time(int reps) throws Exception {
59        for (int i = 0; i < reps; ++i) {
60            Digest digest = digestClass.newInstance();
61            digest.update(DATA, 0, DATA_SIZE);
62            digest.doFinal(new byte[digest.getDigestSize()], 0);
63        }
64    }
65}
66