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/*
* Copyright (C) 2015 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2015 Vincent Breitmoser <v.breitmoser@mugenguild.com>
* Copyright (C) 2015 Adithya Abraham Philip <adithyaphilip@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sufficientlysecure.keychain.operations;
import java.util.Random;
import android.content.Context;
import android.support.annotation.NonNull;
import org.bouncycastle.bcpg.HashAlgorithmTags;
import org.bouncycastle.bcpg.S2K;
import org.bouncycastle.bcpg.SymmetricKeyAlgorithmTags;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.operator.PBEDataDecryptorFactory;
import org.bouncycastle.openpgp.operator.PGPDigestCalculatorProvider;
import org.bouncycastle.openpgp.operator.jcajce.JcaPGPDigestCalculatorProviderBuilder;
import org.bouncycastle.openpgp.operator.jcajce.JcePBEDataDecryptorFactoryBuilder;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.operations.results.BenchmarkResult;
import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType;
import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog;
import org.sufficientlysecure.keychain.operations.results.SignEncryptResult;
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyInputParcel;
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyOperation;
import org.sufficientlysecure.keychain.pgp.PgpSecurityConstants;
import org.sufficientlysecure.keychain.pgp.PgpSecurityConstants.OpenKeychainSymmetricKeyAlgorithmTags;
import org.sufficientlysecure.keychain.pgp.Progressable;
import org.sufficientlysecure.keychain.pgp.SignEncryptParcel;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.BenchmarkInputParcel;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Passphrase;
import org.sufficientlysecure.keychain.util.ProgressScaler;
public class BenchmarkOperation extends BaseOperation<BenchmarkInputParcel> {
public BenchmarkOperation(Context context, ProviderHelper providerHelper, Progressable
progressable) {
super(context, providerHelper, progressable);
}
@NonNull
@Override
public BenchmarkResult execute(BenchmarkInputParcel consolidateInputParcel,
CryptoInputParcel cryptoInputParcel) {
OperationLog log = new OperationLog();
log.add(LogType.MSG_BENCH, 0);
// random data
byte[] buf = new byte[1024*1024*10];
new Random().nextBytes(buf);
Passphrase passphrase = new Passphrase("a");
int numRepeats = 5;
long totalTime = 0;
// encrypt
SignEncryptResult encryptResult;
int i = 0;
do {
SignEncryptOperation op =
new SignEncryptOperation(mContext, mProviderHelper,
new ProgressScaler(mProgressable, i*(50/numRepeats), (i+1)*(50/numRepeats), 100), mCancelled);
SignEncryptParcel input = new SignEncryptParcel();
input.setSymmetricPassphrase(passphrase);
input.setSymmetricEncryptionAlgorithm(OpenKeychainSymmetricKeyAlgorithmTags.AES_128);
input.setBytes(buf);
encryptResult = op.execute(input, new CryptoInputParcel());
log.add(encryptResult, 1);
log.add(LogType.MSG_BENCH_ENC_TIME, 2,
String.format("%.2f", encryptResult.getResults().get(0).mOperationTime / 1000.0));
totalTime += encryptResult.getResults().get(0).mOperationTime;
} while (++i < numRepeats);
long encryptionTime = totalTime / numRepeats;
totalTime = 0;
// decrypt
i = 0;
do {
DecryptVerifyResult decryptResult;
PgpDecryptVerifyOperation op =
new PgpDecryptVerifyOperation(mContext, mProviderHelper,
new ProgressScaler(mProgressable, 50 +i*(50/numRepeats), 50 +(i+1)*(50/numRepeats), 100));
PgpDecryptVerifyInputParcel input = new PgpDecryptVerifyInputParcel(encryptResult.getResultBytes());
input.setAllowSymmetricDecryption(true);
decryptResult = op.execute(input, new CryptoInputParcel(passphrase));
log.add(decryptResult, 1);
log.add(LogType.MSG_BENCH_DEC_TIME, 2, String.format("%.2f", decryptResult.mOperationTime / 1000.0));
totalTime += decryptResult.mOperationTime;
} while (++i < numRepeats);
long decryptionTime = totalTime / numRepeats;
totalTime = 0;
int iterationsFor100ms;
try {
PGPDigestCalculatorProvider digestCalcProvider = new JcaPGPDigestCalculatorProviderBuilder()
.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build();
PBEDataDecryptorFactory decryptorFactory = new JcePBEDataDecryptorFactoryBuilder(
digestCalcProvider).setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME).build(
"".toCharArray());
byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
int iterations = 0;
while (iterations < 255 && totalTime < 100) {
iterations += 1;
S2K s2k = new S2K(HashAlgorithmTags.SHA1, iv, iterations);
totalTime = System.currentTimeMillis();
decryptorFactory.makeKeyFromPassPhrase(SymmetricKeyAlgorithmTags.AES_128, s2k);
totalTime = System.currentTimeMillis() -totalTime;
if ((iterations % 10) == 0) {
log.add(LogType.MSG_BENCH_S2K_FOR_IT, 1, Integer.toString(iterations), Long.toString(totalTime));
}
}
iterationsFor100ms = iterations;
} catch (PGPException e) {
Log.e(Constants.TAG, "internal error during benchmark", e);
log.add(LogType.MSG_INTERNAL_ERROR, 0);
return new BenchmarkResult(BenchmarkResult.RESULT_ERROR, log);
}
log.add(LogType.MSG_BENCH_S2K_100MS_ITS, 1, Integer.toString(iterationsFor100ms));
log.add(LogType.MSG_BENCH_ENC_TIME_AVG, 1, String.format("%.2f", encryptionTime/1000.0));
log.add(LogType.MSG_BENCH_DEC_TIME_AVG, 1, String.format("%.2f", decryptionTime/1000.0));
log.add(LogType.MSG_BENCH_SUCCESS, 0);
return new BenchmarkResult(BenchmarkResult.RESULT_OK, log);
}
}
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