Accessory Controller Networks With Secure Proxy Coordination
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Solution Overview
Problem
Existing systems lack a unified and secure method for multiple controllers to manage and control various accessory devices within a network, particularly in environments like homes or vehicles, where devices from different manufacturers and with varying functions need to be integrated and secured.
Innovation Solution
A controller network system is implemented, utilizing a uniform accessory protocol that includes a secure exchange of long-term public keys and allows multiple controllers to manage and control various accessory devices, employing a uniform accessory protocol that integrates and secure storage elements, which are capable of communicating with an intermediary, employing a secure exchange of long-term public keys and allows multiple controllers to manage and control various accessory devices, which are capable of communicating with accessory devices, employing a unified accessory protocol that integrates and secure storage elements, which are capable of communicating with accessory devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple controllers are allowed to manage accessory devices, then control versatility and functionality are improved, but system complexity and security management become worsened
Solution Approach 1:
The accessory device acts as an intermediary that receives control requests from multiple controllers and forwards them to the target accessory. The accessory maintains authorization records for multiple controllers and manages the communication between controllers and controlled devices, thereby enabling multiple controllers to work together without direct complex interactions between them.
2Adaptability or versatility
If multiple controllers are allowed to manage accessory devices, then control versatility and functionality are improved, but security and authorized access management become worsened
Solution Approach 1:
The accessory device performs preliminary authorization checks before processing control requests. Each controller must be pre-authorized by the accessory device through a pairing process where the accessory verifies the controller's credentials and stores authorization records. This preliminary security action ensures that only authorized controllers can manage accessories, maintaining security while allowing multiple controllers.
3Ease of operation
If a unified accessory protocol is implemented, then ease of operation and integration are improved, but compatibility with different transport protocols becomes worsened
Solution Approach 1:
The accessory device serves as a mediator that translates between the unified accessory protocol used by controllers and the specific transport protocols required by different accessories. The accessory receives standardized control requests through the unified protocol, processes them, and communicates with the target accessory using the appropriate transport protocol (Bluetooth Low Energy, Wi-Fi, Zigbee, etc.), thereby maintaining both unity and compatibility.
Data Source
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AI summary
Controllers can be used to control the operation of various accessories. Controllers with access to a particular accessory (or group of accessories) can be organized into a controller network to facilitate control. The controller network can include various proxy devices including bridge and tunnel proxies that can relay messages to and from accessories, perform protocol translations, and/or provide communication security. Some proxy devices can include decision logic to enable coordinated control over one or more accessories by the controllers in the controller network.