Vehicle-to-X Message Verification Using Priority-Based Segmentation
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Solution Overview
Problem
Current vehicle-to-X communication systems face challenges in efficiently utilizing computing capacity and implementing security solutions, particularly with the 'verification on demand' approach, where deciding message importance is dispersed across units lacking security implementations, leading to suboptimal resource utilization.
Innovation Solution
A method for processing vehicle-to-X messages involves a processing module that receives, buffers, and verifies messages based on a checking sequence specified by prioritization information, allowing for efficient verification of important messages and reducing data traffic by forwarding only necessary information, thus optimizing computing capacity and security verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all incoming vehicle-to-X messages are verified using cryptographic checksums, then security against tampering is ensured, but processing power consumption increases significantly
Solution Approach 1:
The patent implements selective verification where only certain messages are verified based on priority classification. The control unit determines which messages require verification and communicates this to the processing module, which then verifies only those specific messages rather than all incoming messages. This partial action approach maintains security for critical messages while reducing overall processing power consumption.
2Use of energy by moving object
If verification is performed on demand based on message importance, then processing power is saved, but the decision-making unit lacks security implementation capabilities
Solution Approach 1:
The patent divides the system into two specialized modules: a processing module that handles security verification with cryptographic capabilities, and a control unit that determines message priority and makes verification decisions. This segmentation allows each component to specialize in its strength - the control unit in decision-making and the processing module in security verification - resolving the contradiction between energy efficiency and security capability.
Solution Approach 2:
The processing module acts as an intermediary that receives priority information from the control unit and executes the actual security verification. This intermediary role allows the control unit to make informed decisions about which messages need verification without needing to implement security verification itself, while ensuring that verified messages are processed by a dedicated security-capable module.
3Adaptability or versatility
If a dispersed construction method is used with existing control units, then integration is easier, but coordination between decision-making and security verification becomes difficult
Solution Approach 1:
The processing module is designed with multi-functionality to handle both message reception and security verification tasks. It can process messages from multiple sources and implement cryptographic verification using standards like ECDSA. This universal design simplifies integration with existing control units while maintaining clear functional boundaries that reduce coordination complexity.
Data Source
AI summary
A method for processing vehicle-to-X messages in a processing module and a method for processing vehicle-to-X messages in a control module. In the course of this messages are checked in a specified checking sequence.