Vehicle Smart Key Distance Control Against Relay Attacks
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Solution Overview
Problem
The existing smart checking systems for vehicles are vulnerable to relay attacks, where radio waves from a vehicle are relayed to a distant location, potentially leading to theft, as they do not effectively prevent unauthorized activation or communication when the user terminal is far away from the vehicle.
Innovation Solution
An information processing apparatus and method that set or release a remote immobilizer function and a smart cancel function based on the distance between a vehicle and a user terminal, using a control unit to manage these functions to prevent unauthorized activation and communication, thereby enhancing security against relay attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If radio wave transmission is enabled for smart key communication, then ease of operation is improved, but vulnerability to relay attacks increases
Solution Approach 1:
The system performs preliminary distance verification between the user terminal and vehicle before enabling smart key communication. Position information is acquired and compared against threshold values in advance, preventing relay attacks by blocking communication attempts from distant locations before they can exploit the smart key system.
Solution Approach 2:
The control unit acts as an intermediary that mediates between the smart key communication system and the position verification system. It receives position information, determines distance based on threshold values, and selectively enables or disables radio wave transmission, thereby protecting the communication system from relay attacks while maintaining normal operation when safe.
2Reliability
If remote immobilizer function is set when distance exceeds threshold, then vehicle security is improved, but ease of operation deteriorates
Solution Approach 1:
The remote immobilizer function transitions from a static on/off state to a dynamic state that automatically adjusts based on real-time position information. The control unit continuously monitors distance between user terminal and vehicle, dynamically enabling or disabling the immobilizer function to maintain security while allowing convenient operation when the user is in proximity.
Solution Approach 2:
The system changes the operational parameter of the immobilizer function based on the parameter of distance. When distance exceeds a predetermined threshold, the immobilizer is enabled; when distance falls below the threshold, it is disabled. This parameter-based control maintains security without requiring manual user intervention.
3Measurement precision
If position information monitoring is continuously performed, then detection precision is improved, but use of energy increases
Solution Approach 1:
Instead of continuous monitoring, the system performs periodic position information acquisition and distance calculation. The control unit checks position data at intervals, comparing it against predetermined threshold values, thereby maintaining accurate distance measurement capability while significantly reducing energy consumption compared to continuous real-time monitoring.
Data Source
AI summary
An information processing apparatus including a control unit configured to acquire a distance between a vehicle and a user terminal based on position information of the vehicle and position information of the user terminal, and generate a command for setting or releasing a remote immobilizer function and a smart cancel function based on the distance between the vehicle and the user terminal. The remote immobilizer function is a function for remotely setting or releasing an immobilizer of the vehicle. The smart cancel function is a function for stopping radio waves transmitted from the vehicle for communication between the vehicle and a key of the vehicle.