Vehicle Remote Control System with Transponder Authentication
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Solution Overview
Problem
Current remote control systems for vehicles lack secure and reliable connectivity, as they rely on general-purpose mobile devices that may not have necessary security features and are not guaranteed to be secure, limiting the range and functionality of remote access.
Innovation Solution
A remote control system that includes a transponder configured to communicate with a mobile device and a controller, using a challenge-response authentication protocol to verify control requests, ensuring secure communication through short-range and long-range networks, and enabling secure vehicle functions like starting or unlocking the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If general-purpose mobile devices are used for remote control, then connectivity range and functionality are improved, but security is compromised
Solution Approach 1:
The system divides the remote control functionality into two separate components: a mobile device for long-range communication and a transponder for short-range authentication. This segmentation allows each component to specialize in its strength while mitigating their individual weaknesses.
Solution Approach 2:
The transponder acts as an intermediary between the mobile device and the vehicle controller. It receives authentication challenges from the controller, generates secure responses, and relays them through the mobile device, thereby enabling secure authentication without exposing the vehicle's sensitive systems directly to the untrusted mobile device.
2Length of stationary object
If mobile devices are used for remote access, then range is increased, but security features are insufficient
Solution Approach 1:
The system separates the authentication function (handled by the secure transponder) from the communication function (handled by the mobile device), allowing long-range access while maintaining security through the transponder's proximity-based authentication.
Solution Approach 2:
The transponder performs preliminary authentication by generating secure challenge-response pairs before the vehicle controller processes any control requests. This preliminary security check ensures that only authenticated mobile devices can communicate with the vehicle, even over long distances.
3Adaptability or versatility
If third-party mobile devices are manufactured, then connectivity is improved, but security cannot be ensured
Solution Approach 1:
The transponder serves as a trusted intermediary that mediates all authentication between the vehicle and any mobile device. Since the transponder is part of the vehicle's secure system, it ensures that third-party mobile devices cannot compromise security even though they provide improved connectivity.
Solution Approach 2:
The system creates a secure copy of the authentication mechanism within the transponder that mirrors the vehicle controller's challenge-response protocol. This allows the mobile device to communicate securely without needing to trust the third-party mobile device manufacturer's security implementation.
Data Source
AI summary
A remote control system for a vehicle may include a transponder configured to communicate with a mobile device, and a controller comprising a processing unit. The processing unit may be configured to: receive a control request to perform a vehicle function from the mobile device; receive an authentication signal from the mobile device, the authentication signal being generated by the transponder; and perform the vehicle function based on the authentication signal.