Digital Vehicle Key Locking for Unauthorized Key Addition
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Solution Overview
Problem
The generation of a new digital vehicle key represents a potential attack vector on the security concept of motor vehicles, and existing systems lack effective mechanisms to secure against unauthorized addition of such keys.
Innovation Solution
Implementing a locking device on the motor vehicle and key management system to prevent the acceptance of newly generated digital vehicle keys, using encrypted communication and attestation packages, and enabling secure storage and transmission of requests to manage locking devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking device is set up directly on the motor vehicle to prevent acceptance of newly generated digital vehicle keys, then security against unauthorized key addition is improved, but the system cannot respond to locking requests when the vehicle is shielded from radio waves (e.g., in underground car parks)
Solution Approach 1:
The patent introduces a mobile device as an intermediary carrier that stores and transmits locking device setup requests. When the vehicle is radio-shielded and cannot receive direct communications, the request is stored in the mobile device's digital vehicle key and can be transmitted later when communication is possible, ensuring the system remains adaptable while maintaining security
Solution Approach 2:
The system performs preliminary actions by storing the locking device setup request in the digital vehicle key on the mobile device before the vehicle can receive it. This allows the request to be prepared in advance and transmitted when communication conditions permit, resolving the contradiction between immediate security response and adaptability to communication barriers
2Loss of time
If direct communication between key management system and motor vehicle is used to set up locking devices, then response time is improved, but communication may fail when the vehicle is shielded from radio waves
Solution Approach 1:
The mobile device acts as an intermediary that can store and forward locking device setup requests. When direct communication fails due to radio shielding, the request persists in the mobile device and can be transmitted later, maintaining reliability without permanently increasing response time loss
Solution Approach 2:
The system dynamically adapts its communication path based on conditions. When direct vehicle communication is available, it uses that for fast response; when blocked, it transitions to storing the request in the mobile device for later transmission, optimizing both response time and reliability based on real-time conditions
Data Source
AI summary
A method of controlling a motor vehicle includes detecting, by a key management system, a request to set up a locking device against addition of a newly generated digital vehicle key which can be used to control the motor vehicle, storing, by the key management system, a request for setting up a locking device in a digital vehicle key which has been stored on a mobile device, transmitting the request from the mobile device to the motor vehicle and setting up the locking device on the part of the motor vehicle.