TestSigningDigest digest = new TestSigningDigest();
        block.digest = digest;

        byte[] buf = new byte[256];
        int len = block.encode(buf, 0);

        assertTrue(len > 0);
        assertTrue(digest.called, "sign() should be called during encode");
        assertEquals(len, digest.lastLength);
    }

    @Test
    @DisplayName("writeAndXWireFormat without andx writes 0xFF and sentinel offset")

        return 0;
    }

    @Override
    int readSetupWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    int readParametersWireFormat(final byte[] buffer, int bufferIndex, final int len) {
        final int start = bufferIndex;

        status = readInt2(buffer, bufferIndex);
        bufferIndex += 2;

     * @param bufferIndex the starting index in the buffer
     * @param len the maximum length of data to decode
     * @return decoded length
     * @throws SMBProtocolDecodingException if decoding fails
     */
    int decode(byte[] buffer, int bufferIndex, int len) throws SMBProtocolDecodingException;

        return 0;
    }

    @Override
    protected int readSetupWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    protected int readParametersWireFormat(final byte[] buffer, int bufferIndex, final int len) {
        final int start = bufferIndex;
        setStatus(SMBUtil.readInt2(buffer, bufferIndex));
        bufferIndex += 2;

    abstract int writeDataWireFormat(byte[] dst, int dstIndex);

    abstract int readSetupWireFormat(byte[] buffer, int bufferIndex, int len);

    abstract int readParametersWireFormat(byte[] buffer, int bufferIndex, int len);

    abstract int readDataWireFormat(byte[] buffer, int bufferIndex, int len);

    @Override
    public String toString() {

     * @return string length
     */
    public int stringWireLength(final String str, final int offset) {
        int len = str.length() + 1;
        if (this.useUnicode) {
            len = str.length() * 2 + 2;
            len = offset % 2 != 0 ? len + 1 : len;
        }
        return len;
    }

    /**
     * Calculates the length of a null-terminated string in the buffer.
     *

        hashFunction.hashBytes(bytes), hashFunction.newHasher(size).putBytes(bytes).hash());
    int off = random.nextInt(size);
    int len = random.nextInt(size - off);
    assertEquals(
        hashFunction.hashBytes(bytes, off, len),
        hashFunction.newHasher(size).putBytes(bytes, off, len).hash());
  }

  private static void assertHashByteBufferEquivalence(HashFunction hashFunction, Random random) {

    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode(byte[] buffer, int bufferIndex, int len) {
        int start = bufferIndex;
        int end = start + len;
        interfaces.clear();

        while (bufferIndex < end && (bufferIndex + 152) <= end) {
            // Read Next field to determine if there are more entries

    protected void haveResponse(final byte[] buffer, final int start, final int len) throws SMBProtocolDecodingException {
        if (isRetainPayload()) {
            final byte[] payload = new byte[len];
            System.arraycopy(buffer, start, payload, 0, len);
            setRawPayload(payload);
        }

        if (!verifySignature(buffer, start, len)) {

        return 0;
    }

    @Override
    protected int readParametersWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override
    protected int readDataWireFormat(final byte[] buffer, final int bufferIndex, final int len) {
        return 0;
    }

    @Override