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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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package org.openjdk.bench.javax.crypto.full;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Setup;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;

public class DESedeBench extends CryptoBase {

    public static final int SET_SIZE = 128;

    @Param({"DESede/ECB/NoPadding", "DESede/ECB/PKCS5Padding", "DESede/CBC/NoPadding","DESede/CBC/PKCS5Padding"})
    private String algorithm;

    @Param({"168"})
    private int keyLength;

    @Param({""+16*1024})
    private int dataSize;

    byte[][] data;
    byte[][] encryptedData;
    private Cipher encryptCipher;
    private Cipher decryptCipher;
    int index = 0;

    @Setup
    public void setup() throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException, InvalidAlgorithmParameterException {
        setupProvider();
        KeyGenerator kg = KeyGenerator.getInstance("DESede");
        kg.init(keyLength);
        Key key = kg.generateKey();
        encryptCipher = makeCipher(prov, algorithm);
        encryptCipher.init(Cipher.ENCRYPT_MODE, key);
        decryptCipher = makeCipher(prov, algorithm);
        decryptCipher.init(Cipher.DECRYPT_MODE, key, encryptCipher.getParameters());
        data = fillRandom(new byte[SET_SIZE][dataSize]);
        encryptedData = fillEncrypted(data, encryptCipher);
    }

    @Benchmark
    public byte[] encrypt() throws BadPaddingException, IllegalBlockSizeException {
        byte[] d = data[index];
        index = (index +1) % SET_SIZE;
        return encryptCipher.doFinal(d);
    }

    @Benchmark
    public byte[] decrypt() throws BadPaddingException, IllegalBlockSizeException {
        byte[] e = encryptedData[index];
        index = (index +1) % SET_SIZE;
        return decryptCipher.doFinal(e);
    }

}