Image Display Device Control via Server-Generated Tokens
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Solution Overview
Problem
Existing image display devices face challenges in authenticating with other IoT devices from different manufacturers, leading to security risks and inconvenient one-by-one authentication processes when adding new master devices.
Innovation Solution
An image display device operates as a master device by performing authentication with other devices based on data exchanged with an existing authenticated master device, allowing control commands to be transmitted and executed through an authentication token generated by a server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If authentication procedure is performed between master device and slave device from different manufacturers, then device compatibility is improved, but authentication complexity and time increase
Solution Approach 1:
The server performs preliminary authentication between the master device and slave device before the actual control operation. The authentication token is generated in advance and stored, so when control is needed, the pre-authenticated credentials are used immediately without requiring real-time authentication procedures.
Solution Approach 2:
A server acts as an intermediary between the master device and slave device. The server handles the authentication process by generating and managing authentication tokens, allowing the master and slave devices to communicate without directly performing complex authentication procedures with each other.
2Adaptability or versatility
If authentication procedure is performed between master device and slave device from different manufacturers, then device compatibility is improved, but system complexity increases
Solution Approach 1:
The authentication functionality is extracted from the master device and slave device pair and relocated to a dedicated server. This separates the authentication complexity from the endpoint devices, allowing them to remain simple while the server handles all authentication logic and token management.
Solution Approach 2:
The server serves as an intermediary that manages authentication between devices from different manufacturers. It provides a unified authentication mechanism that works across different device types and manufacturers, eliminating the need for each device to implement complex multi-vendor authentication protocols.
3Adaptability or versatility
If all device information is registered in the same server, then device interoperability is improved, but security risk increases
Solution Approach 1:
Sensitive device information is extracted from the server and replaced with authentication tokens. The server stores only the necessary authentication credentials rather than complete device information, reducing the security risk while maintaining interoperability through token-based authentication.
Solution Approach 2:
Instead of storing actual device information in the server, authentication tokens (which are copies or representations of device identity) are used. These tokens allow device identification and authentication without exposing sensitive device information, thus maintaining interoperability while reducing security risks.
Data Source
AI summary
An image display device including a display; a user input interface; a communication interface which is provided with at least one communication module and transmits and receives a signal including data; a memory; and a control unit for transmitting and receiving data to and from external devices, wherein the control unit performs an authentication procedure pertaining to a first external device based on image display device-related data received from the first external device, receives data, pertaining to a second external device, and at least one control command, related to the control of the second external device, when the authentication procedure is completed, and, when a user input corresponding to one of the one or more control commands is received, transmits a control signal for the control command corresponding to the user input to the second external device based on the data pertaining to the second external device.