BlowFishKey.java example

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silentium-master
/*
 * 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 silentium.gameserver.network.gameserverpackets;

import java.security.GeneralSecurityException;
import java.security.interfaces.RSAPublicKey;

import javax.crypto.Cipher;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author -Wooden-
 */
public class BlowFishKey extends GameServerBasePacket
{
	private static Logger _log = LoggerFactory.getLogger(BlowFishKey.class.getName());

	public BlowFishKey(byte[] blowfishKey, RSAPublicKey publicKey)
	{
		writeC(0x00);
		byte[] encrypted = null;
		try
		{
			Cipher rsaCipher = Cipher.getInstance("RSA/ECB/nopadding");
			rsaCipher.init(Cipher.ENCRYPT_MODE, publicKey);
			encrypted = rsaCipher.doFinal(blowfishKey);

			writeD(encrypted.length);
			writeB(encrypted);
		}
		catch (GeneralSecurityException e)
		{
			_log.error("Error While encrypting blowfish key for transmision (Crypt error)");
			e.printStackTrace();
		}
	}

	@Override
	public byte[] getContent()
	{
		return getBytes();
	}
}