* @param data the raw PAC data bytes
     * @param keys map of Kerberos keys for signature validation
     * @throws PACDecodingException if the PAC data is malformed or signature validation fails
     */
    public Pac(byte[] data, Map<Integer, KerberosKey> keys) throws PACDecodingException {
        byte[] checksumData = data.clone();
        try {

            // Verify offset (8 bytes)
            assertEquals(offset, SMBUtil.readInt8(buffer, 0));

            // Verify length (8 bytes)
            assertEquals(length, SMBUtil.readInt8(buffer, 8));

            // Verify flags (4 bytes)
            assertEquals(flags, SMBUtil.readInt4(buffer, 16));

            // Verify reserved field is zeros (4 bytes)

public class SrvCopychunkCopy implements Encodable {

    private final byte[] sourceKey;
    private final SrvCopychunk[] chunks;

    /**
     * Constructs a server copy chunk operation request
     * @param sourceKey the resume key identifying the source file
     * @param chunks the array of copy chunk descriptors
     */
    public SrvCopychunkCopy(final byte[] sourceKey, final SrvCopychunk... chunks) {
        this.sourceKey = sourceKey;

    int writeParameterWordsWireFormat(final byte[] dst, int dstIndex) {
        writeInt2(fid, dst, dstIndex);
        dstIndex += 2;
        writeUTime(lastWriteTime, dst, dstIndex);
        return 6;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    int readParameterWordsWireFormat(final byte[] buffer, final int bufferIndex) {

    // Happy path + edge: getSessionKey returns bytes, empty and null
    @Test
    @DisplayName("getSessionKey returns bytes, empty, then null")
    void getSessionKey_variants() throws CIFSException {
        byte[] key = new byte[] { 10, 20 };
        when(session.getSessionKey()).thenReturn(key, new byte[0], null);

        assertArrayEquals(key, session.getSessionKey());
        assertArrayEquals(new byte[0], session.getSessionKey());

  }

  MessageDigestHashFunction(String algorithmName, int bytes, String toString) {
    this.toString = checkNotNull(toString);
    this.prototype = getMessageDigest(algorithmName);
    int maxLength = prototype.getDigestLength();
    checkArgument(
        bytes >= 4 && bytes <= maxLength, "bytes (%s) must be >= 4 and < %s", bytes, maxLength);
    this.bytes = bytes;
    this.supportsClone = supportsClone(prototype);
  }

	// https://bugs.openjdk.org/browse/JDK-7073588.
	// The approach here is to write 8 byte sizes if needed without
	// adding a zip64 extra in the local header (too late anyway).
	var buf []byte
	if w.isZip64() {
		buf = make([]byte, dataDescriptor64Len)
	} else {
		buf = make([]byte, dataDescriptorLen)
	}
	b := writeBuf(buf)
	b.uint32(dataDescriptorSignature) // de-facto standard, required by OS X

        }

        @Test
        @DisplayName("Should return correct number of bytes consumed from buffer")
        void shouldReturnCorrectBytesConsumed() throws SMBProtocolDecodingException {
            // Given - larger buffer than needed
            byte[] buffer = new byte[100];
            ByteBuffer bb = ByteBuffer.wrap(buffer).order(ByteOrder.LITTLE_ENDIAN);
            bb.putLong(1000L);

        response.maxFragmentedSize = SMBUtil.readInt4(data, idx);
        idx += 4;

        return response;
    }

    /**
     * Encode to byte array
     *
     * @return encoded message
     */
    public byte[] encode() {
        byte[] data = new byte[32];

        int idx = 0;
        SMBUtil.writeInt2(minVersion, data, idx);
        idx += 2;
        SMBUtil.writeInt2(maxVersion, data, idx);

	LogAllBody bool

	ttfbHeader time.Duration
	ttfbBody   time.Duration

	StartTime time.Time
	// number of bytes written
	bytesWritten int
	// number of bytes of response headers written
	headerBytesWritten int
	// Internal recording buffer
	headers bytes.Buffer
	body    bytes.Buffer
	// Indicate if headers are written in the log
	headersLogged bool
}

// Hijack - hijacks the underlying connection