}

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Encodable#encode(byte[], int)
     */
    @Override
    public int encode(final byte[] dst, final int dstIndex) {
        System.arraycopy(this.bytes, this.off, dst, dstIndex, this.len);
        return this.len;
    }

        // Set error code to 0
        setErrorCode(response, 0);

        // Copy valid descriptor data to the offset position
        byte[] validData = createValidSecurityDescriptorBuffer();
        System.arraycopy(validData, 0, buffer, offset, validData.length);

        int result = response.readDataWireFormat(buffer, offset, buffer.length - offset);

        assertTrue(result > 0);

     * @param i the starting index in the array
     * @param l the number of bytes to write
     */
    public void writeOctetArray(final byte[] b, final int i, final int l) {
        System.arraycopy(b, i, buf, index, l);
        advance(l);
    }

    /**
     * Reads an octet array from the buffer.
     *
     * @param b the byte array to read into
     * @param i the starting index in the array

        byte[] dk = deriveKeyAES(baseKey, cst); // Checksum key
        try {
            Mac m = Mac.getInstance("HmacSHA1");
            m.init(new SecretKeySpec(dk, HMAC_KEY));
            System.arraycopy(m.doFinal(input), 0, output, 0, 12);
            return output;
        } finally {
            Arrays.fill(dk, 0, dk.length, (byte) 0);
        }
    }

    /**

    @Test
    @DisplayName("Test compression with offset and length")
    public void testCompressionWithOffsetLength() throws CIFSException {
        byte[] paddedData = new byte[testData.length + 200];
        System.arraycopy(testData, 0, paddedData, 100, testData.length);

        byte[] compressed = compressionService.compress(paddedData, 100, testData.length, CompressionService.COMPRESSION_LZ77);

     * {@inheritDoc}
     *
     * @see jcifs.Encodable#encode(byte[], int)
     */
    @Override
    public int encode(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

        System.arraycopy(this.sourceKey, 0, dst, dstIndex, 24);
        dstIndex += 24;

        SMBUtil.writeInt4(this.chunks.length, dst, dstIndex);
        dstIndex += 4;

        dstIndex += 4; // Reserved

        if (end == buffer.length) {
            if (start != 0) {
                // first try shifting the used buffer back to the beginning to make space
                int len = end - start;
                System.arraycopy(buffer, start, buffer, 0, len);
                start = 0;
                end = len;
            } else {
                // otherwise extend the buffer

        dst[dstIndex + 2] = this.fileInformationClass;
        dst[dstIndex + 3] = this.queryFlags;
        dstIndex += 4;
        SMBUtil.writeInt4(this.fileIndex, dst, dstIndex);
        dstIndex += 4;
        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;

        final int fnOffsetOffset = dstIndex;
        final int fnLengthOffset = dstIndex + 2;
        dstIndex += 4;

        dstIndex += 4;
        SMBUtil.writeInt4(this.dataLength, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt8(this.offset, dst, dstIndex);
        dstIndex += 8;
        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;
        SMBUtil.writeInt4(this.channel, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt4(this.remainingBytes, dst, dstIndex);

        final int start = dstIndex;
        SMBUtil.writeInt2(this.maxReferralLevel, dst, dstIndex);
        dstIndex += 2;
        final byte[] pathBytes = this.path.getBytes(StandardCharsets.UTF_16LE);
        System.arraycopy(pathBytes, 0, dst, dstIndex, pathBytes.length);
        dstIndex += pathBytes.length;
        SMBUtil.writeInt2(0, dst, dstIndex);
        dstIndex += 2; // null terminator
        return dstIndex - start;
    }