Vehicle Keyless Entry Security via Signal Timing Verification
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Solution Overview
Problem
Keyless entry and contactless payment systems are vulnerable to misuse due to signal interference, allowing unauthorized access as signals can be transmitted over long distances, leading to false proximity assumptions.
Innovation Solution
A method and apparatus for automatic vehicle opening and starting that involve receiving a first signal, producing a second signal for the driver, and checking for a termination signal within a prescribed time to ensure authorized access, using a combination of signal transmission and plausibility checks to enhance security and user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If keyless entry systems use signal transmission over long distances, then user convenience is improved, but security against misuse deteriorates
Solution Approach 1:
The system introduces a feedback mechanism where the control apparatus sends a first signal to the electronic key and waits for a response signal within a predetermined time frame. The electronic key must respond within this time window to confirm legitimate proximity, preventing relay attacks that attempt to transmit signals over extended distances without the actual key being present.
Solution Approach 2:
The control apparatus performs a preliminary check by sending a challenge signal and measuring the response time before granting access. This preliminary action verifies that the electronic key is physically close to the vehicle, as legitimate keys respond within the predetermined time frame, while relay attacks fail to meet this timing requirement.
2Ease of operation
If automatic opening systems minimize active user involvement, then ease of operation is improved, but ability to prevent misuse deteriorates
Solution Approach 1:
The system enables self-service operation where the vehicle automatically opens when the electronic key is detected in proximity, minimizing active user involvement. The control apparatus autonomously determines whether to grant access based on the presence and response of the electronic key, providing both convenience and security without requiring user action.
Solution Approach 2:
The automatic system incorporates feedback mechanisms where the control apparatus receives response signals from the electronic key within a predetermined time frame. This feedback loop allows the system to automatically distinguish between legitimate keys and relay attacks, maintaining security while enabling hands-free operation.
3Productivity
If contactless payment systems transmit signals over long distances, then transaction speed is improved, but vulnerability to relay attacks deteriorates
Solution Approach 1:
The contactless payment system performs a preliminary verification by transmitting a signal and measuring the response time from the payment apparatus. legitimate payment devices respond within a predetermined time frame, confirming their physical proximity to the checkout terminal, while relay attacks fail to meet this timing requirement, thus preventing fraud while maintaining fast transactions.
Solution Approach 2:
The system uses feedback mechanisms where the checkout terminal sends a challenge signal and receives a response within a predetermined time window. This feedback loop verifies the legitimacy of the payment apparatus, ensuring that only devices physically close to the terminal can complete transactions, thereby preventing relay attacks while maintaining transaction speed.
Data Source
AI summary
Receiving a first signal or a first message and taking the receipt of the first signal or of the first message as a basis for producing a second signal or a second message for a driver of a vehicle.