Vehicle Trust Verification via Message Frequency Analysis
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Solution Overview
Problem
Current inter-vehicular communication systems, such as IEEE 1609.2, cannot determine the trustworthiness of vehicle information transmitted by vehicles allowed to participate in communication, as they only verify participation and not the integrity of the information.
Innovation Solution
A method and apparatus that verify a remote vehicle's trustworthiness by receiving and analyzing verification messages, including certificate digests and unique numbers, over short-range wireless communication, determining reliability based on message frequency and generating permission for utilizing basic safety messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IEEE 1609.2 verification process is used to allow vehicle participation in inter-vehicular communication, then communication participation is enabled, but trustworthiness of transmitted vehicle information cannot be determined
Solution Approach 1:
The verification process is segmented into two distinct stages: (1) IEEE 1609.2 cryptographic verification for communication participation qualification, and (2) a new trustworthiness verification stage using short-range wireless communication to determine reliability of transmitted information. This segmentation allows each verification layer to address specific aspects independently, resolving the contradiction between enabling participation and ensuring trustworthiness.
Solution Approach 2:
A verification message containing a certificate digest is introduced as an intermediary element. This message is transmitted via short-range wireless communication and serves as a mediator to verify whether the transmitting vehicle actually possesses the cryptographic certificate, thereby determining trustworthiness without complicating the original IEEE 1609.2 participation verification process.
2Measurement precision
If verification messages are transmitted frequently to determine reliability, then trustworthiness determination accuracy is improved, but communication overhead and energy consumption increase
Solution Approach 1:
Trustworthiness verification is performed periodically by counting the number of verification messages received within a predetermined time period. This periodic approach balances measurement precision (by observing multiple messages) with energy efficiency (by using a time threshold rather than continuous verification), resolving the contradiction between accuracy and energy consumption.
Data Source
AI summary
An apparatus for verifying a vehicle in an inter-vehicular communication environment includes: a communication unit configured to receive a basic safety message and a verification message from a remote vehicle that is allowed to engage in inter-vehicular communication; and a controller configured to determine that the remote vehicle is reliable when the communication unit receives the verification message from the remote vehicle at least a predefined number of times over a predefined period of time, and to generate permission to utilize the basic safety message received from the remote vehicle when the controller determines that the remote vehicle is reliable.