/*

 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package org.openjdk.bench.javax.crypto.full;

import org.openjdk.jmh.annotations.BenchmarkMode;

import org.openjdk.jmh.annotations.Fork;

import org.openjdk.jmh.annotations.Measurement;

import org.openjdk.jmh.annotations.Mode;

import org.openjdk.jmh.annotations.OutputTimeUnit;

import org.openjdk.jmh.annotations.Param;

import org.openjdk.jmh.annotations.Scope;

import org.openjdk.jmh.annotations.Setup;

import org.openjdk.jmh.annotations.State;

import org.openjdk.jmh.annotations.Warmup;

import javax.crypto.BadPaddingException;

import javax.crypto.Cipher;

import javax.crypto.IllegalBlockSizeException;

import javax.crypto.NoSuchPaddingException;

import java.security.NoSuchAlgorithmException;

import java.security.Provider;

import java.security.SecureRandom;

import java.security.Security;

import java.util.Random;

import java.util.concurrent.TimeUnit;

@Fork(5)

@Warmup(iterations = 3, time = 3)

@Measurement(iterations = 8, time = 2)

@OutputTimeUnit(TimeUnit.SECONDS)

@State(Scope.Thread)

@BenchmarkMode(Mode.Throughput)

public class CryptoBase {

    @Param({""})

    private String provider;

    public Provider prov = null;

    @Setup

    public void setupProvider() {

        if (provider != null && !provider.isEmpty()) {

            prov = Security.getProvider(provider);

            if (prov == null) {

                throw new RuntimeException("Can't find prodiver \"" + provider + "\"");

            }

        }

    }

    public static Cipher makeCipher(Provider prov, String algorithm) throws NoSuchPaddingException, NoSuchAlgorithmException {

        return (prov == null) ? Cipher.getInstance(algorithm) : Cipher.getInstance(algorithm, prov);

    }

    public static byte[][] fillRandom(byte[][] data) {

        Random rnd = new Random();

        for (byte[] d : data) {

            rnd.nextBytes(d);

        }

        return data;

    }

    public static byte[] fillRandom(byte[] data) {

        Random rnd = new Random();

        rnd.nextBytes(data);

        return data;

    }

    public static byte[] fillSecureRandom(byte[] data) {

        SecureRandom rnd = new SecureRandom();

        rnd.nextBytes(data);

        return data;

    }

    public static byte[][] fillEncrypted(byte[][] data, Cipher encryptCipher) throws BadPaddingException, IllegalBlockSizeException {

        byte[][] encryptedData = new byte[data.length][];

        for (int i = 0; i < encryptedData.length; i++) {

            encryptedData[i] = encryptCipher.doFinal(data[i]);

        }

        return encryptedData;

    }

}