Vehicle Access Control Using Misuse Probability Assessment
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Solution Overview
Problem
Existing automatic locking and starting systems for vehicles are vulnerable to relay attacks, where the radio link between the vehicle and electronic key can be extended to allow unauthorized access and theft, due to the limitations of current security measures such as propagation time measurement and additional hardware requirements.
Innovation Solution
A system that uses statistical computation methods to assess the probability of misuse based on various indicators, such as usage patterns and parking coordinates, to determine if additional authentication criteria are needed before allowing vehicle entry or motor starting, thereby enhancing security without requiring cost-intensive hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If propagation time measurement is used to detect relay attacks, then security against relay attacks is improved, but device complexity and cost increase due to additional hardware requirements
Solution Approach 1:
The patent replaces physical measurement hardware (propagation time measurement devices) with a statistical evaluation system that processes existing signal data. Instead of adding specialized hardware to measure radio wave propagation time, the system uses software-based statistical methods to analyze patterns in authentication signals and detect anomalies indicating relay attacks.
Solution Approach 2:
The patent creates a virtual model of normal authentication behavior through statistical analysis of multiple authentication cycles. By building this statistical profile from observed data, the system can detect deviations without requiring additional sensing hardware, effectively copying the function of physical measurement through data analysis.
2Reliability
If additional authentication criteria are always required, then security against misuse is improved, but ease of operation deteriorates due to constant additional steps
Solution Approach 1:
The patent implements dynamic authentication where the requirements change based on assessed risk. The system continuously evaluates authentication patterns and adjusts the level of verification needed - using only statistical analysis for normal cases, and escalating to additional authentication criteria only when misuse probability exceeds a threshold, making the process adaptive rather than static.
Solution Approach 2:
The system changes the parameter of authentication strictness based on the calculated probability of misuse. When the probability remains below the threshold, standard authentication proceeds normally. When it exceeds the threshold, the system dynamically increases the authentication parameter by requiring additional verification steps, thus adapting security levels to actual risk.
3Reliability
If statistical computation methods are used to assess misuse probability, then security is improved by detecting anomalies, but use of energy increases due to continuous monitoring and computation
Solution Approach 1:
The patent implements periodic statistical evaluation rather than continuous monitoring. The system analyzes authentication patterns at regular intervals (each authentication cycle) rather than continuously processing data between authentications. This periodic approach maintains security through regular assessment while significantly reducing energy consumption compared to continuous monitoring.
Data Source
AI summary
A system for automatic control of entry and/or motor starting authorization of a user for a vehicle. A control device or a computation device associated with the control device uses at least one statistical computation method to compute a probability of misuse for obtaining an entry and/or motor starting authorization for the vehicle. If the computed probability of misuse reaches or exceeds a prescribable threshold value, a control signal at least for unlocking the vehicle doors and/or for enabling of the motor control device is/are stopped or produced by the control device only if at least one additional authentication criterion has been satisfied; and/or the system for control of entry and/or motor starting authorization is deactivated if it is established that the vehicle is parking in an environment where the probability of future misuse of the electronic key reaches or exceeds a prescribable threshold value.