} catch (final IOException e) {
                throw new RuntimeCIFSException(e);
            }
            bos.write(0x0);
        }

        System.arraycopy(bos.toByteArray(), 0, dst, dstIndex, bos.size());
        return bos.size();
    }

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

        for (final DialectVersion ver : dvs) {
            this.dialects[i] = ver.getDialect();
            i++;
        }

        if (config.getMaximumVersion().atLeast(DialectVersion.SMB210)) {
            System.arraycopy(config.getMachineId(), 0, this.clientGuid, 0, this.clientGuid.length);
        }

        final List<NegotiateContextRequest> negoContexts = new LinkedList<>();

        idx += 4;

        return data;
    }

    @Override
    public int encode(byte[] dst, int dstIndex) {
        byte[] data = getData();
        System.arraycopy(data, 0, dst, dstIndex, data.length);
        return data.length;
    }

    @Override
    public int decode(byte[] buffer, int bufferIndex, int len) throws SMBProtocolDecodingException {
        if (len < 20) {

    }

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

        if (this.isExtendedSecurity()) {
            System.arraycopy(buffer, bufferIndex, this.blob, 0, this.blob.length);
            bufferIndex += this.blob.length;
        }

        this.nativeOs = readString(buffer, bufferIndex);

        count += len; // update number of bytes
        final int partLen = BLOCK_LENGTH - bufferNdx;
        int i = 0;
        if (len >= partLen) {
            System.arraycopy(input, offset, buffer, bufferNdx, partLen);

            transform(buffer, 0);

            for (i = partLen; i + BLOCK_LENGTH - 1 < len; i += BLOCK_LENGTH) {
                transform(input, offset + i);

        when(mockContext.getConfig()).thenReturn(mockConfig);

        // Mock random for predictable salt generation
        doAnswer(invocation -> {
            byte[] buffer = invocation.getArgument(0);
            System.arraycopy(testSalt, 0, buffer, 0, Math.min(buffer.length, testSalt.length));
            return null;
        }).when(mockRandom).nextBytes(any(byte[].class));
    }

    @Test

            }

            mac.update(data, 0, data.length);
            byte[] signature = mac.doFinal();

            // Place signature in data
            System.arraycopy(signature, 0, data, SIGNATURE_OFFSET, SIGNATURE_LENGTH);

            boolean result = digest.verify(data, 0, data.length, 0, msg);

        final int start = bufferIndex;
        if (len < 24) {
            throw new SMBProtocolDecodingException("Invalid resume key");
        }

        this.resumeKey = new byte[24];
        System.arraycopy(buffer, bufferIndex, this.resumeKey, 0, 24);
        bufferIndex += 24;

        SMBUtil.readInt4(buffer, bufferIndex); // contextLength - reserved
        bufferIndex += 4;

        return bufferIndex - start;
    }

        // Flags (4 bytes)
        this.flags = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        // LeaseKey (16 bytes)
        byte[] keyBytes = new byte[16];
        System.arraycopy(buffer, bufferIndex, keyBytes, 0, 16);
        this.leaseKey = new Smb2LeaseKey(keyBytes);
        bufferIndex += 16;

        // LeaseState (4 bytes)
        this.leaseState = SMBUtil.readInt4(buffer, bufferIndex);

        dstIndex += 2;

        SMBUtil.writeInt4(STRUCTURE_SIZE, dst, dstIndex); // DataLength
        dstIndex += 4;

        // Write context name
        System.arraycopy(CONTEXT_NAME_BYTES, 0, dst, dstIndex, 4);
        dstIndex += 4;

        // Padding to align data to 8-byte boundary
        dstIndex += 4;

        // Write durable handle request data (16 bytes of reserved)