byte[] enc = constant;
        int klen = keybytes.length;
        byte[] dk = new byte[klen];
        for ( int n = 0; n < klen; ) {
            byte[] block = cipher.doFinal(enc);
            int len = Math.min(klen - n, block.length);
            System.arraycopy(block, 0, dk, n, len);
            n += len;
            enc = block;
        }
        return dk;
    }

        // CAP_LARGE_WRITE
        if ( th.hasCapability(SmbConstants.CAP_LARGE_WRITEX) && !th.areSignaturesActive() ) {
            this.writeSizeFile = Math.min(th.getConfig().getSendBufferSize() - 70, 0xFFFF - 70);
        }
        else {
            log.debug("No support or SMB signing is enabled, not enabling large writes");
            this.writeSizeFile = this.writeSize;

    /**
     * @param config
     * @param fileId
     */
    public Smb2QueryInfoRequest ( Configuration config, byte[] fileId ) {
        super(config, SMB2_QUERY_INFO);
        this.outputBufferLength = ( Math.min(config.getMaximumBufferSize(),  config.getListSize()) - Smb2QueryInfoResponse.OVERHEAD ) & ~0x7;
        this.fileId = fileId;
    }


    /**
     * {@inheritDoc}
     *

    // open function
    static final int OPEN_FUNCTION_FAIL_IF_EXISTS      = 0x0000;
    static final int OPEN_FUNCTION_OVERWRITE_IF_EXISTS = 0x0020;

    static final int PID = (int)( Math.random() * 65536d );

    static final int SECURITY_SHARE = 0x00;
    static final int SECURITY_USER  = 0x01;

    static final int CMD_OFFSET        = 4;
    static final int ERROR_CODE_OFFSET = 5;

            end = Math.max(end, this.headerStart + this.parameterOffset + this.parameterCount + this.pad2);
        }

        if ( this.dataCount > 0 ) {
            System.arraycopy(this.txn_buf, this.bufDataOffset, dst, this.headerStart + this.dataOffset, this.dataCount);
            this.bufDataOffset += this.dataCount;
            end = Math.max(end, this.headerStart + this.dataOffset + this.dataCount);

            throw new CIFSException(
                "The default OEM encoding " + SmbConstants.DEFAULT_OEM_ENCODING + " does not appear to be supported by this JRE.");
        }

        this.localPid = (int) ( Math.random() * 65536d );
        this.localTimeZone = TimeZone.getDefault();
        this.random = new SecureRandom();

        if ( this.machineId == null ) {
            byte[] mid = new byte[32];

            localHostname = "JCIFS" +
                    ( addr[2] & 0xFF ) + "_" +
                    ( addr[3] & 0xFF ) + "_" +
                    Hexdump.toHexString( (int)( Math.random() * (double)0xFF ), 2 );
        }

        /* Create an NbtAddress for the local interface with
         * the name deduced above possibly with scope applied and
         * cache it forever.
         */

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.pac.kerberos;


import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.util.Enumeration;

import javax.security.auth.kerberos.KerberosKey;

import org.bouncycastle.asn1.*;

import jcifs.pac.ASN1Util;
import jcifs.pac.PACDecodingException;

     */
    public static String encode(byte[] bytes) {
        int length = bytes.length;
        if (length == 0) return "";
        StringBuffer buffer =
                new StringBuffer((int) Math.ceil((double) length / 3d) * 4);
        int remainder = length % 3;
        length -= remainder;
        int block;
        int i = 0;
        while (i < length) {

        if ( log.isTraceEnabled() ) {
            log.trace("update: " + this.updates + " " + offset + ":" + len);
            log.trace(Hexdump.toHexString(input, offset, Math.min(len, 256)));
        }
        if ( len == 0 ) {
            return; /* CRITICAL */
        }
        this.digest.update(input, offset, len);
        this.updates++;
    }


    /**