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 17 package benchmarks.regression; 18 19 import com.google.caliper.Param; 20 import com.google.caliper.SimpleBenchmark; 21 import com.android.org.bouncycastle.crypto.Digest; 22 23 public 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
