final ByteBuffer buffer = ByteBuffer.wrap(nonce);
            buffer.order(java.nio.ByteOrder.LITTLE_ENDIAN);
            buffer.putLong(counter);
            // Remaining bytes (if any) stay zero-padded
        }

        return nonce;
    }

    /**
     * Generate a secure random nonce for initial session setup.
     * This method can be used when enhanced randomness is required,

        request = new Smb2NegotiateRequest(mockConfig, 0);

        // When
        int size = request.size();

        // Then - Header (64) + Structure (36) + Dialects (4 * 2) = 108, padded to 8-byte boundary = 112
        assertEquals(112, size);
    }

    @Test
    @DisplayName("Should calculate size correctly with contexts")
    void testSizeWithContexts() throws Exception {
        // Given

        // Set converter value first
        setConverter(response, 0);

        // Set number of entries
        setNumEntries(response, 1);

        // Write share name (13 bytes, null padded)
        byte[] nameBytes = shareName.getBytes(StandardCharsets.US_ASCII);
        System.arraycopy(nameBytes, 0, buffer, bufferIndex, Math.min(nameBytes.length, 13));
        bufferIndex += 14;

        byte[] buffer = new byte[totalSize + 100];
        int bufferIndex = 0;
        int start = 0;

        // Write server name (16 bytes, null padded)
        byte[] nameBytes = serverName.getBytes(StandardCharsets.US_ASCII);
        System.arraycopy(nameBytes, 0, buffer, bufferIndex, Math.min(nameBytes.length, 15));
        bufferIndex += 16;

                setNetbiosName(ctx.getNetbiosName());
                byte[] sk = ctx.getSigningKey();
                if (sk != null) {
                    // session key is truncated to 16 bytes, right padded with 0 if shorter
                    byte[] key = new byte[16];
                    System.arraycopy(sk, 0, key, 0, Math.min(16, sk.length));
                    this.sessionKey = key;
                }