Hierarchical Vehicle Device Identity Verification
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Solution Overview
Problem
There is a lack of reliable methods for verifying the authenticity of vehicle-mounted devices, which are crucial for vehicle function and safety, as they can be replaced with fake or shoddy devices, potentially affecting performance and safety.
Innovation Solution
A hierarchical identity verification method is implemented, where a primary authentication node sends a random number to a secondary authentication node, which then verifies intra-domain devices, reducing the load by only requiring verification of a small quantity of devices at each level and ensuring high reliability through a network architecture with domain managers and authentication nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all vehicle-mounted devices are verified individually, then verification reliability is improved, but device load and verification time increase significantly
Solution Approach 1:
The verification system is segmented into hierarchical levels: domain managers manage subsets of devices, and multiple domain managers report to a central authentication node. This segmentation allows parallel verification processes across different domains, reducing overall verification time while maintaining comprehensive coverage through the hierarchical structure.
Solution Approach 2:
Domain managers perform preliminary verification of devices within their managed subsets before reporting to the central authentication node. This preliminary action filters out obviously fake devices early in the process, reducing the workload for central verification and accelerating the overall verification timeline.
2Measurement precision
If verification is performed on all vehicle-mounted devices at the central node, then verification accuracy is improved, but device load and processing complexity increase
Solution Approach 1:
The verification system divides devices into subsets managed by different domain managers. Each domain manager handles verification for their specific subset, reducing the complexity burden on any single node. The hierarchical structure distributes computational complexity across multiple levels while maintaining centralized coordination for overall accuracy.
Solution Approach 2:
Domain managers act as intermediaries between individual devices and the central authentication node. They perform initial verification and filtering, reducing the number of devices that require central node verification. This intermediary layer simplifies the central node's workload while maintaining verification accuracy through coordinated multi-level validation.
3Ease of operation
If no verification mechanism is implemented, then device operation simplicity is maintained, but security and reliability of vehicle functions deteriorate
Solution Approach 1:
The verification system operates autonomously through automated authentication protocols between domain managers, authentication nodes, and devices. The self-service mechanism handles verification transparently without requiring manual intervention, maintaining operational simplicity while ensuring security through automated validation of device identities and permissions.
Data Source
AI summary
A first apparatus sends a first random number to a second apparatus, where a vehicle carries the first apparatus and a first set. The second apparatus belongs to the first set. The first set further includes a third apparatus. The first apparatus communicates with the third apparatus using the second apparatus. The first apparatus receives a first message from the second apparatus. The first message includes first verification information to perform identity verification on the second apparatus. The first verification information is based on identity information of the second apparatus and the first random number. The first apparatus determines, based on the first verification information and the first random number, that the identity verification on the second apparatus has succeeded.