| /* |
| * Copyright (C) 2012 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package benchmarks.regression; |
| |
| import com.google.caliper.BeforeExperiment; |
| import java.io.ByteArrayInputStream; |
| import java.io.InputStream; |
| import java.security.spec.AlgorithmParameterSpec; |
| import javax.crypto.Cipher; |
| import javax.crypto.CipherInputStream; |
| import javax.crypto.KeyGenerator; |
| import javax.crypto.SecretKey; |
| import javax.crypto.spec.IvParameterSpec; |
| |
| /** |
| * CipherInputStream benchmark. |
| */ |
| public class CipherInputStreamBenchmark { |
| |
| private static final int DATA_SIZE = 1024 * 1024; |
| private static final byte[] DATA = new byte[DATA_SIZE]; |
| |
| private static final int IV_SIZE = 16; |
| private static final byte[] IV = new byte[IV_SIZE]; |
| |
| static { |
| for (int i = 0; i < DATA_SIZE; i++) { |
| DATA[i] = (byte) i; |
| } |
| for (int i = 0; i < IV_SIZE; i++) { |
| IV[i] = (byte) i; |
| } |
| } |
| |
| private SecretKey key; |
| |
| private byte[] output = new byte[8192]; |
| |
| private Cipher cipherEncrypt; |
| |
| private AlgorithmParameterSpec spec; |
| |
| @BeforeExperiment |
| protected void setUp() throws Exception { |
| KeyGenerator generator = KeyGenerator.getInstance("AES"); |
| generator.init(128); |
| key = generator.generateKey(); |
| |
| spec = new IvParameterSpec(IV); |
| |
| cipherEncrypt = Cipher.getInstance("AES/CBC/PKCS5Padding"); |
| cipherEncrypt.init(Cipher.ENCRYPT_MODE, key, spec); |
| } |
| |
| public void timeEncrypt(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| cipherEncrypt.init(Cipher.ENCRYPT_MODE, key, spec); |
| InputStream is = new CipherInputStream(new ByteArrayInputStream(DATA), cipherEncrypt); |
| while (is.read(output) != -1) { |
| } |
| } |
| } |
| } |