com.javacreed.api.secureproperties.bouncycastle.TwoFishCipherFactory.java Source code

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Here is the source code for com.javacreed.api.secureproperties.bouncycastle.TwoFishCipherFactory.java

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/*
 * #%L
 * JavaCreed Secure Properties Bouncy Castle Encoder
 * %%
 * Copyright (C) 2012 - 2015 Java Creed
 * %%
 * 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.
 * #L%
 */
package com.javacreed.api.secureproperties.bouncycastle;

import java.io.InputStream;
import java.io.OutputStream;

import org.bouncycastle.crypto.BufferedBlockCipher;
import org.bouncycastle.crypto.engines.TwofishEngine;
import org.bouncycastle.crypto.io.CipherInputStream;
import org.bouncycastle.crypto.io.CipherOutputStream;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.bouncycastle.crypto.params.KeyParameter;

import com.javacreed.api.secureproperties.cipher.pbe.AbstractPbeCipherFactory;

/**
 * Two Fish password based cipher factory based on the Bouncy Castle (<a
 * href="https://www.bouncycastle.org/java.html">https://www.bouncycastle.org/java.html</a>)
 *
 * @author Albert Attard
 */
public class TwoFishCipherFactory extends AbstractPbeCipherFactory {

    /**
     * Creates an instance of this factory with the default settings
     */
    public TwoFishCipherFactory() {
        this("javacreed");
    }

    /**
     * Creates an instance of this factory using the given {@code key}
     *
     * @param key
     *          the algorithm's key
     * @throws NullPointerException
     *           if the key is {@code null}
     */
    public TwoFishCipherFactory(final String key) throws NullPointerException {
        super(key);
    }

    @Override
    protected InputStream wrapInToCipheredInputStream(final InputStream in) throws Exception {
        final BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));
        cipher.init(false, new KeyParameter(key.getBytes("UTF-8")));
        final CipherInputStream stream = new CipherInputStream(in, cipher);
        return stream;
    }

    @Override
    protected OutputStream wrapInToCipheredOutputStream(final OutputStream out) throws Exception {
        final BufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new TwofishEngine()));
        cipher.init(true, new KeyParameter(key.getBytes("UTF-8")));
        final CipherOutputStream stream = new CipherOutputStream(out, cipher);
        return stream;
    }
}