Vehicle Control Verification Using Multi-Level Certificate Chains
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control instruction transmission processes lack adequate security due to simple encryption methods and lack of identity verification on terminal and in-vehicle devices, compromising the integrity of the communication.
Innovation Solution
Implement a multi-level certificate chain-based verification system involving a first server that generates target verification information and a certificate chain for both the terminal and in-vehicle devices, ensuring identity verification through multiple layers of key-based authentication before processing vehicle control instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If simple encryption method is used for vehicle control instruction, then ease of operation is improved, but security is worsened
Solution Approach 1:
The verification process is segmented into multiple independent stages: certificate chain verification, identity authentication, and encrypted transmission. Each stage performs a specific security function, transforming a single complex security operation into manageable segments that collectively enhance security without overwhelming operational complexity
Solution Approach 2:
Identity verification and certificate validation are performed preliminarily before the actual vehicle control instruction transmission. The terminal device and in-vehicle device complete mutual authentication and establish secure channels in advance, ensuring that subsequent control instructions are transmitted over verified secure connections
2Device complexity
If no identity verification is performed on terminal device and in-vehicle device, then device complexity is reduced, but security is worsened
Solution Approach 1:
A certificate chain acts as an intermediary verification mechanism between the terminal device and in-vehicle device. Rather than requiring direct complex mutual authentication, the certificate chain serves as a trusted intermediary that validates identities, simplifying the verification process while maintaining high security standards
Solution Approach 2:
The verification system adds a new dimension of security by implementing multi-level certificate chain verification. Instead of relying on single-layer authentication, the system verifies certificates across multiple hierarchical levels, transforming security from a single-dimensional check to a multi-dimensional verification process
3Reliability
If multi-level certificate chain verification is implemented, then security is improved, but device complexity is worsened
Solution Approach 1:
The complex multi-level certificate chain verification is segmented into distinct verification steps: root certificate validation, intermediate certificate verification, and end-entity certificate authentication. Each segment handles a specific level of the certificate hierarchy, making the overall complex process manageable and modular
Solution Approach 2:
The certificate chain verification mechanism serves multiple functions simultaneously: it validates device identities, establishes trust relationships, ensures data integrity, and provides audit trails. This multi-functionality justifies the increased device complexity by delivering comprehensive security benefits across multiple operational dimensions
Data Source
Figure 1A~1B
Figure 2A
Figure 2B
AI summary
Embodiments of this specification provide a plurality of privacy-protection-based verification methods, apparatuses, devices, and systems. A method includes the following: a local identity verification request for controlling an in-vehicle device is sent to a first server, where the first server is configured to generate target verification information corresponding to the terminal device and the in-vehicle device for the identity verification request; the target verification information and a pre-constructed certificate chain that are sent by the first server are received, and the certificate chain and the target verification information are verified based on a predetermined key of the terminal device to obtain a verification result; and when the verification result is that the verification succeeds, a vehicle control instruction is processed based on the target verification information, and a processed vehicle control instruction is sent to the in-vehicle device, so that the in-vehicle device processes the vehicle control instruction based on the target verification information and the certificate chain.