Vehicle Door Lock System Using Knocking Event Correlation
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Solution Overview
Problem
Wireless vehicle keys are vulnerable to eavesdropping and relay attacks, allowing unauthorized access as the access information can be intercepted and manipulated by non-trusted devices.
Innovation Solution
A vehicle door lock system that requires physical contact verification using a portable electronic device, generating and comparing triggering event data from both the vehicle and the device to ensure the device is in proximity, thereby preventing unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless key access information data is transferred wirelessly between the wireless key and the vehicle, then convenience for the user is improved, but security against eavesdropping and relay attacks deteriorates
Solution Approach 1:
The patent introduces an intermediary verification mechanism involving a portable electronic device that acts as a mediator between the wireless key and the vehicle. This device captures triggering events (such as knocking sounds or vibrations) from both the vehicle and the portable device, verifies their correlation, and only then permits access. This intermediary layer prevents direct eavesdropping and relay attacks on the wireless communication channel while maintaining the convenience of wireless access.
2Adaptability or versatility
If a portable electronic device is used as a wireless key, then functionality and integration are improved, but vulnerability to interception and manipulation by non-trusted devices worsens
Solution Approach 1:
The patent implements preliminary action by requiring the portable electronic device to perform a triggering event (such as knocking or vibrating) before access is granted. The vehicle's sensor detects this triggering event and generates triggering event data, which is then verified against data from the portable device. This preliminary verification step ensures that the portable device is physically present and actively participating in the access process, preventing interception and manipulation by non-trusted devices while maintaining the versatility of using portable devices as keys.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances security by preventing relay attacks and ensuring only trusted devices with proximity access information can unlock the vehicle, thereby securing access.
Implementation Method 1
generate first triggering event data, indicative of a first triggering event detected by the vehicle event sensor, caused by a knocking of an object onto the vehicle
Implementation Method 2
generate second triggering event data, indicative of a second triggering event detected by the portable electronic device event sensor, caused by a knocking of the portable electronic device onto an object
Data Source
Figure 1a~1b
Figure 2~3
Figure 4~5
AI summary
The disclosure relates to a vehicle door lock system (100) of a vehicle (1), a portable electronic device (20) and a method for managing access to the vehicle (1). The vehicle door lock system (100) comprises: a door lock (5a,5b,5c,5d); a vehicle event sensor (10a,10b,10c,10d); and a processing circuitry (102a), the processing circuitry (102a,102b,102c) is configured to cause the vehicle door lock system (100) to generate first triggering event data (1TED), indicative of a first triggering event detected by the vehicle event sensor (10a,10b,10c,10d), caused by a knocking of an object onto the vehicle (1), at a first time (T1), obtain, from a portable electronic device (20), second triggering event data (2TED), indicative of a second triggering event caused by a knocking of the portable electronic device (20) onto an object, at a second time (T2), determine if the first triggering event and the second triggering event both occurs within a predetermined time period by comparing the first triggering event data (1TED) and the second triggering event data (2TED).