buffer.append("=");
        return buffer.toString();
    }

    /**
     * Decodes the supplied Base-64 encoded string.
     *
     * @param string The Base-64 encoded string that is to be decoded.
     * @return A <code>byte[]</code> containing the decoded data block.
     */
    public static byte[] decode(String string) {
        int length = string.length();
        if (length == 0) return new byte[0];

        Mac m = Mac.getInstance("HmacMD5");
        m.init(new SecretKeySpec(Hex.decode(key), "HMAC"));
        byte[] mac = m.doFinal(bytes);
        checkBytes(Hex.decode(expect), mac);
    }


    @Test
    public void testRC4Checksum1 () throws PACDecodingException, GeneralSecurityException {
        String data = "fifteen sixteen";

    public int type;
    public ACE[] aces;

    public SecurityDescriptor() {
    }
    public SecurityDescriptor(byte[] buffer, int bufferIndex, int len) throws IOException {
        this.decode(buffer, bufferIndex, len);
    }
    public int decode(byte[] buffer, int bufferIndex, int len) throws IOException {
        int start = bufferIndex;

        bufferIndex++; // revision
        bufferIndex++;

     * @return the totalBytesWritten
     */
    public byte[] getData () {
        return this.data;
    }


    /**
     * {@inheritDoc}
     *
     * @see Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode ( byte[] buffer, int bufferIndex, int len ) throws SMBProtocolDecodingException {
        int start = bufferIndex;
        this.namedPipeState = SMBUtil.readInt4(buffer, bufferIndex);

            _dst = _dst.derive(_nodei);
            for ( int _i = 0; _i < _nodes; _i++ ) {
                _dst.enc_ndr_small(this.node[ _i ]);
            }
        }


        @Override
        public void decode ( NdrBuffer _src ) throws NdrException {
            _src.align(4);
            this.time_low = _src.dec_ndr_long();
            this.time_mid = (short) _src.dec_ndr_short();

/**
 * @author mbechler
 *
 */
public final class AvPairs {

    private AvPairs () {}


    /**
     * Decode a list of AvPairs
     * 
     * @param data
     * @return individual pairs
     * @throws CIFSException
     */
    public static List<AvPair> decode ( byte[] data ) throws CIFSException {
        List<AvPair> pairs = new LinkedList<>();
        int pos = 0;
        boolean foundEnd = false;

                hdrBuf.setIndex(0);
                msg.decode_header(hdrBuf);
            }

            NdrBuffer msgBuf;
            if ( have != 0 && !msg.isFlagSet(DCERPC_LAST_FRAG) ) {
                msgBuf = new NdrBuffer(receiveMoreFragments(msg, inB), 0);
            }
            else {
                msgBuf = new NdrBuffer(inB, 0);
            }
            msg.decode(msgBuf);
        }
        finally {

        this.value = value;
    }


    @Override
    public void encode ( NdrBuffer dst ) throws NdrException {
        dst.enc_ndr_long(this.value);
    }


    @Override
    public void decode ( NdrBuffer src ) throws NdrException {
        this.value = src.dec_ndr_long();
    }

    public int value;

    public NdrLong(int value) {
        this.value = value;
    }

    public void encode(NdrBuffer dst) throws NdrException {
        dst.enc_ndr_long(value);
    }
    public void decode(NdrBuffer src) throws NdrException {
        value = src.dec_ndr_long();
    }

    public NdrSmall(int value) {
        this.value = value & 0xFF;
    }

    public void encode(NdrBuffer dst) throws NdrException {
        dst.enc_ndr_small(value);
    }
    public void decode(NdrBuffer src) throws NdrException {
        value = src.dec_ndr_small();
    }