Host Device Known-Good List for Accessory Authentication Bypass
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Solution Overview
Problem
Existing communication protocols between electronic devices are inefficient due to the need for repeated authentication processes when reconnecting, disrupting the user experience and consuming additional time.
Innovation Solution
Implementing a list of known-good device identifiers that allows bypassing authentication for previously authenticated devices, reducing the need for repeated authentication by storing configuration information and using a timeout mechanism for device reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication process is performed for every connection, then device security is improved, but connection time and user experience deteriorate
Solution Approach 1:
The host device performs authentication in advance when a device first connects, storing the authenticated device identifier in a known-good list. When the same device reconnects within a timeout period, the pre-performed authentication allows bypassing the authentication process, thus resolving the contradiction between security and connection time.
Solution Approach 2:
The system applies different authentication treatments to different devices based on their status in the known-good list. Authenticated devices receive expedited reconnection while unauthenticated devices undergo full authentication, allowing localized optimization of connection time without compromising overall security.
2Reliability
If authentication process is performed for every connection, then device authorization is improved, but user experience deteriorates
Solution Approach 1:
Authentication is performed in advance and the result is cached in the known-good list. Subsequent reconnections by authenticated devices can bypass the authentication process, maintaining authorization security while significantly improving user experience by eliminating repeated authentication interruptions.
Solution Approach 2:
The system dynamically adjusts authentication requirements based on device history. Devices with prior successful authentication experience dynamic treatment (bypass), while new devices undergo static full authentication, creating a flexible system that adapts to device history to improve user experience without sacrificing authorization.
3Reliability
If repeated authentication is required, then security protocol compliance is improved, but communication efficiency deteriorates
Solution Approach 1:
The authentication process is performed in advance and its results are stored in the known-good list. This preliminary action allows subsequent reconnections to bypass authentication, maintaining security protocol compliance for initial connections while dramatically improving communication efficiency for reconnections.
Solution Approach 2:
Once a device is authenticated, its authorized status continues without interruption for a predetermined timeout period. This continuity allows multiple reconnections within the timeout window to proceed without repeating authentication, maintaining security compliance while ensuring continuous efficient communication.
Data Source
AI summary
Authentication techniques for electronic devices can provide more seamless communication between two devices. A first device (e.g., a host device) can maintain a list of known-good devices (e.g., accessory devices) with which it can interoperate. Information identifying a second device can be added to the known-good list when the second device successfully connects to the first device and completes an authentication process. After the second device disconnects, the first device can retain the identifying information on the known-good list for a predetermined period of time, after which the information can expire. If the second device reconnects to the host before its information expires, the authentication process can be bypassed.