/*
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* Copyright (C) 2012 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package benchmarks.regression;
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import com.google.caliper.BeforeExperiment;
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import com.google.caliper.Param;
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import java.security.spec.AlgorithmParameterSpec;
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import java.util.HashMap;
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import java.util.Map;
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import javax.crypto.Cipher;
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import javax.crypto.KeyGenerator;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.IvParameterSpec;
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/**
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* Cipher benchmarks. Only runs on AES currently because of the combinatorial
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* explosion of the test as it stands.
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*/
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public class CipherBenchmark {
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private static final int DATA_SIZE = 8192;
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private static final byte[] DATA = new byte[DATA_SIZE];
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private static final int IV_SIZE = 16;
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private static final byte[] IV = new byte[IV_SIZE];
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static {
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for (int i = 0; i < DATA_SIZE; i++) {
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DATA[i] = (byte) i;
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}
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for (int i = 0; i < IV_SIZE; i++) {
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IV[i] = (byte) i;
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}
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}
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@Param private Algorithm algorithm;
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public enum Algorithm {
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AES,
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};
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@Param private Mode mode;
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public enum Mode {
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CBC,
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CFB,
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CTR,
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ECB,
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OFB,
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};
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@Param private Padding padding;
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public enum Padding {
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NOPADDING,
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PKCS1PADDING,
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};
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@Param({"128", "192", "256"}) private int keySize;
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@Param({"16", "32", "64", "128", "1024", "8192"}) private int inputSize;
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@Param private Implementation implementation;
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public enum Implementation { OpenSSL, BouncyCastle };
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private String providerName;
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// Key generation isn't part of the benchmark so cache the results
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private static Map<Integer, SecretKey> KEY_SIZES = new HashMap<Integer, SecretKey>();
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private String cipherAlgorithm;
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private SecretKey key;
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private byte[] output = new byte[DATA.length];
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private Cipher cipherEncrypt;
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private Cipher cipherDecrypt;
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private AlgorithmParameterSpec spec;
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@BeforeExperiment
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protected void setUp() throws Exception {
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cipherAlgorithm = algorithm.toString() + "/" + mode.toString() + "/"
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+ padding.toString();
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String keyAlgorithm = algorithm.toString();
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key = KEY_SIZES.get(keySize);
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if (key == null) {
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KeyGenerator generator = KeyGenerator.getInstance(keyAlgorithm);
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generator.init(keySize);
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key = generator.generateKey();
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KEY_SIZES.put(keySize, key);
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}
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switch (implementation) {
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case OpenSSL:
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providerName = "AndroidOpenSSL";
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break;
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case BouncyCastle:
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providerName = "BC";
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break;
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default:
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throw new RuntimeException(implementation.toString());
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}
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if (mode != Mode.ECB) {
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spec = new IvParameterSpec(IV);
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}
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cipherEncrypt = Cipher.getInstance(cipherAlgorithm, providerName);
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cipherEncrypt.init(Cipher.ENCRYPT_MODE, key, spec);
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cipherDecrypt = Cipher.getInstance(cipherAlgorithm, providerName);
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cipherDecrypt.init(Cipher.DECRYPT_MODE, key, spec);
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}
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public void timeEncrypt(int reps) throws Exception {
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for (int i = 0; i < reps; ++i) {
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cipherEncrypt.doFinal(DATA, 0, inputSize, output);
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}
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}
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public void timeDecrypt(int reps) throws Exception {
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for (int i = 0; i < reps; ++i) {
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cipherDecrypt.doFinal(DATA, 0, inputSize, output);
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}
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}
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}
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