V2X Secure Session and Pseudonym Messaging for Fast Trusted Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing V2X communication technologies face challenges in ensuring secure and efficient message exchange, particularly in protecting user anonymity and preventing message forgery, while optimizing for the specific needs of vehicle-to-everything communication.
Innovation Solution
Implementing a security protocol that uses X.509 certificates for secure sessions and pseudonym certificates for message encryption and digital signatures, combined with message filtering and verification methods to enhance security and reduce computational load on devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If V2X devices use direct communication for vehicle safety, then communication speed is improved, but security and anonymity protection deteriorate
Solution Approach 1:
The patent introduces a server as an intermediary component that mediates between V2X devices. The server receives V2X messages, verifies digital signatures using pseudonym certificates, and manages secure communication sessions. This intermediary architecture enables devices to maintain direct fast communication while the server handles security verification, thus preserving both communication speed and security/anonymity protection.
2Reliability
If V2X devices implement comprehensive security verification, then message integrity is improved, but computational load deteriorates
Solution Approach 1:
The patent segments the security verification process into two parts: (1) V2X devices perform lightweight digital signature generation using pseudonym certificates, and (2) the server performs the computationally intensive verification of digital signatures. This segmentation allows devices to maintain message integrity with minimal computational overhead, while the server handles the heavy verification load.
Solution Approach 2:
The patent implements partial verification at the device level (digital signature generation) and moves excessive/comprehensive verification to the server level. Devices perform only the necessary minimal action of signing messages, while the server performs the complete verification process, reducing the computational burden on resource-constrained V2X devices.
3Reliability
If V2X devices use random V2X IDs for anonymity, then user privacy is improved, but message traceability deteriorates
Solution Approach 1:
The patent changes the parameter of identification from permanent to temporary by using randomly generated V2X IDs that are valid only for specific time periods or message sequences. Each device obtains pseudonym certificates with associated random IDs from the server, enabling anonymity during communication while the server maintains the ability to trace messages through the certificate issuance records when necessary.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An apparatus for a vehicle-to-everything (V2X) service establishes a secure session with a V2X server by using a transport layer security (TLS) handshake on the basis of an X.509 certificate of the V2X server. The apparatus generates a signed V2X message having a digital signature generated on the basis of a pseudonym certificate. The apparatus encodes the signed V2X message on the basis of the X.509 certificate.