Passive Keyless Entry Countermeasures for Relay Attack Resistance
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Solution Overview
Problem
Passive keyless entry systems are vulnerable to malicious attacks, particularly relay attacks, where attackers intercept and relay wireless communications to gain unauthorized access to vehicles without possessing the key fob, due to the systems' reliance on proximity-independent wireless transmissions.
Innovation Solution
Implementing a security system that dynamically adapts communication protocols by activating countermeasures such as altering communication routines, formats, and confirming user presence using sensor data analysis, without requiring additional hardware, to prevent malicious attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If passive keyless entry systems use proximity-independent wireless transmissions, then user convenience is improved, but security against relay attacks deteriorates
Solution Approach 1:
The system dynamically adapts communication protocols by selectively activating countermeasures based on environmental conditions and security characteristics. The communication behavior changes from static to dynamic, allowing the system to maintain convenience while enhancing security against relay attacks through real-time protocol adaptation.
Solution Approach 2:
The system changes communication parameters such as transmission timing, message formats, and authentication routines based on detected security conditions. By modifying these parameters dynamically, the system prevents relay attacks while maintaining the convenience of passive keyless entry operation.
2Reliability
If the system implements additional security countermeasures, then security against malicious attacks is improved, but device complexity increases
Solution Approach 1:
The security system is segmented into multiple independent countermeasures that can be selectively activated. Each countermeasure addresses specific security threats, allowing the system to implement comprehensive security without requiring all countermeasures to be active simultaneously, thus managing complexity through modular design.
Solution Approach 2:
The communication module serves multiple functions by implementing various countermeasures (timing validation, message format verification, authentication routines) within a single unified system. This multi-functionality allows the system to address different security threats without adding separate dedicated hardware for each countermeasure.
3Reliability
If the system validates user presence using sensor data, then security is improved, but processing time and energy consumption increase
Solution Approach 1:
The system performs preliminary validation of user presence using sensor data before executing full authentication routines. By pre-checking environmental conditions and user presence indicators, the system avoids time-consuming processing when validation is unnecessary, thus reducing average processing time while maintaining security.
Solution Approach 2:
The system implements partial validation using sensor data in certain conditions rather than full validation in all cases. This selective approach applies security measures proportionally to the detected risk level, reducing processing time and energy consumption when full validation is not required while maintaining adequate security.
Data Source
AI summary
Systems, methods, and other embodiments described herein relate to securing wireless communications for passive keyless entry (PKE) to an asset. In one embodiment, a method includes, responsive to acquiring sensor data about at least a surrounding environment of a vehicle that provides access according to wireless communications with a remote device, analyzing the sensor data to define operating conditions identifying security characteristics of the vehicle and interactions of the remote device with the vehicle. The method includes activating a countermeasure from an available group of countermeasures according to at least the operating conditions. The method includes wirelessly communicating, by the vehicle with the remote device, according to the countermeasure.