SMBUtil.writeInt2(4, buffer, 2);
            SMBUtil.writeInt2(PreauthIntegrityNegotiateContext.HASH_ALGO_SHA512, buffer, 4);
            byte[] salt = { 0x01, 0x02, 0x03, 0x04 };
            System.arraycopy(salt, 0, buffer, 6, 4);

            PreauthIntegrityNegotiateContext context = new PreauthIntegrityNegotiateContext();
            int bytesRead = context.decode(buffer, 0, 10);

        // 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);

        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<>();

        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);

        new ByteProcessor<byte[]>() {
          int pos;

          @Override
          public boolean processBytes(byte[] buf, int off, int len) throws IOException {
            System.arraycopy(buf, off, processedBytes, pos, len);
            pos += len;
            return true;
          }

          @Override
          public byte[] getResult() {
            return processedBytes;
          }

    void testDecodeMethodIntegration() throws Exception {
        byte[] buffer = new byte[1024];
        int bufferIndex = 0;

        // Prepare SMB2 header (64 bytes)
        // Protocol ID
        System.arraycopy(new byte[] { (byte) 0xFE, 'S', 'M', 'B' }, 0, buffer, bufferIndex, 4);
        // Header length
        SMBUtil.writeInt2(64, buffer, bufferIndex + 4);
        // Credit charge

        offset += 2;

        SMBUtil.writeInt4(52, buffer, offset); // DataLength (32 standard + 20 directory-specific)
        offset += 4;

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

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

        // Write standard lease data (32 bytes)

        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;
    }

        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)

    }

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

        if (extendedSecurity) {
            System.arraycopy(buffer, bufferIndex, blob, 0, blob.length);
            bufferIndex += blob.length;
        }
        nativeOs = readString(buffer, bufferIndex);
        bufferIndex += stringWireLength(nativeOs, bufferIndex);