SshCrypto.java

/*
 * This file is part of "The Java Telnet Application".
 *
 * (c) Matthias L. Jugel, Marcus Mei�ner 1996-2002. All Rights Reserved.
 * The file was changed by Radek Polak to work as midlet in MIDP 1.0
 *
 * Please visit http://javatelnet.org/ for updates and contact.
 *
 * --LICENSE NOTICE--
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 * --LICENSE NOTICE--
 */
package ssh.v1;

/**
 * @author Marcus Meissner
 * @version $Id$
 */
public class SshCrypto {
	private Cipher sndCipher, rcvCipher;

	public SshCrypto(String type, final byte[] key) {
		sndCipher = Cipher.getInstance(type);
		rcvCipher = Cipher.getInstance(type);

		// must be async for RC4. But we currently don't.

		sndCipher.setKey(key);
		rcvCipher.setKey(key);
	}

	public byte[] encrypt(byte[] block) {
		return sndCipher.encrypt(block);
	}

	public byte[] decrypt(byte[] block) {
		return rcvCipher.decrypt(block);
	};

}