* @param data the data to calculate the MAC for
     * @return the calculated MAC bytes
     * @throws GeneralSecurityException if cryptographic operations fail
     */
    public static byte[] calculateMacArcfourHMACMD5(int keyusage, Key key, byte[] data) throws GeneralSecurityException {
        int ms_usage = mapArcfourMD5KeyUsage(keyusage);
        Mac mac = Mac.getInstance("HmacMD5");

     * @throws SmbException if an SMB protocol error occurs
     * @throws GeneralSecurityException if a security error occurs during authentication
     */
    public SmbComSessionSetupAndX(final CIFSContext tc, final SmbComNegotiateResponse negotiated, final ServerMessageBlock andx,
            final Object cred) throws SmbException, GeneralSecurityException {
        super(tc.getConfig(), SMB_COM_SESSION_SETUP_ANDX, andx);

    /**
     * Test method for
     * {@link jcifs.pac.PacMac#calculateMacArcfourHMACMD5(int, java.security.Key, byte[])}.
     *
     * @throws GeneralSecurityException
     */
    @Test
    void testCalculateMacArcfourHMACMD5() throws GeneralSecurityException {
        // Using a key with a known value for reproducibility
        SecretKeySpec key = new SecretKeySpec(new byte[16], "ARCFOUR");

    }

    /**
     * Test decrypt with RC4 encryption.
     *
     * @throws GeneralSecurityException if a security error occurs
     */
    @Test
    void testDecryptRc4() throws GeneralSecurityException {
        // This is a simplified test and does not use real encrypted data from Kerberos
        // It mainly tests the decryption logic path

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.internal.smb1.com;

import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.RuntimeCIFSException;
import jcifs.SmbConstants;
import jcifs.internal.smb1.AndXServerMessageBlock;

 */
package jcifs.pac.kerberos;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.GeneralSecurityException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;

import javax.security.auth.kerberos.KerberosKey;
import javax.security.auth.login.LoginException;

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package jcifs.smb;

import java.security.GeneralSecurityException;
import java.util.Arrays;

import jcifs.CIFSContext;

/**
 * This class stores and encrypts NTLM user credentials. The default
 * credentials are retrieved from the {@code jcifs.smb.client.domain},