Digital Key Activation Using Wireless Constellation Map Authentication
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Solution Overview
Problem
Existing vehicle security systems using digital keys are vulnerable to relay attacks, allowing unauthorized access and theft through communication hijacking.
Innovation Solution
A vehicle and mobile device system that generates and stores a print pattern based on the relative position of wireless communication apparatuses, using signal strength to create a constellation map, and controls digital key activation/deactivation based on this pattern, enhancing security by verifying the proximity and authenticity of the mobile device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vehicle uses digital key control through mobile device communication, then the ease of operation is improved, but the reliability deteriorates due to vulnerability to relay attacks
Solution Approach 1:
The system performs preliminary scanning of wireless communication apparatuses and generates a reference print pattern of the constellation map before the actual digital key activation. This preliminary action creates a security baseline that is stored and later compared during the key activation process to detect relay attacks
Solution Approach 2:
The system continuously monitors the constellation map by scanning wireless communication apparatuses and compares the current print pattern with the stored reference print pattern. This feedback mechanism detects deviations caused by relay attacks and dynamically controls the activation state of the digital key accordingly
2Reliability
If the vehicle scans and generates constellation map print patterns for security verification, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The communication device performs multiple functions: it scans wireless communication apparatuses, measures signal strengths, generates constellation maps, creates print patterns, and compares patterns. This multi-functionality reduces the need for separate dedicated components for each security function, thereby managing complexity while enhancing reliability
Solution Approach 2:
The vehicle's communication device autonomously performs the security verification process by scanning wireless communication apparatuses, generating and storing reference print patterns, and using these patterns to control digital key activation without requiring external security hardware or complex additional systems
Data Source
AI summary
In an embodiment, a vehicle and/or a mobile device obtains relative position information of surrounding wireless communication apparatuses based on received signal strengths of the wireless communication apparatuses received by a communication device, generates the relative positions of the wireless communication apparatuses as a constellation map, generates a print pattern based on the position of the constellation map, and controls activation of a digital key based on the print pattern corresponding to the constellation map.