NetlogonCredentialUtil.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 */

package com.liferay.portal.security.sso.ntlm.internal;

import jcifs.util.DES;

/**
 * @author Michael C. Han
 */
public class NetlogonCredentialUtil {

	public static byte[] computeNetlogonCredential(
		byte[] input, byte[] sessionKey) {

		byte[] k1 = new byte[7];
		byte[] k2 = new byte[7];

		System.arraycopy(sessionKey, 0, k1, 0, 7);
		System.arraycopy(sessionKey, 7, k2, 0, 7);

		DES k3 = new DES(k1);
		DES k4 = new DES(k2);

		byte[] output1 = new byte[8];
		byte[] output2 = new byte[8];

		k3.encrypt(input, output1);
		k4.encrypt(output1, output2);

		return output2;
	}

}