Research on Cross-Domain Authentication Scheme for V2G Networks Based on SM9 Signature Cryptography Algorithm and Consortium Blockchain Technology

Abstract

With the rapid development of electric vehicles worldwide, the vehicle to grid (V2G) network, which is an important component of the smart grid, is facing a huge security threat. Especially, the convergence effect generated when a large number of devices connect to the V2G network can easily cause server authentication congestion, forming a signaling data storm, leading to a sharp increase in authentication latency. To solve this problem, this paper fully analyzes the advantages of the consortium blockchain technology and the V2G Multidomain Network architecture, and proposes a cross domain security management authentication scheme for V2G network based on SM9 digital signature algorithm and the consortium blockchain technology. This scheme can achieve secure and reliable two-way authentication between local domain users and local domain servers, as well as between local domain users and foreign domain servers, and can also achieve safe and effective storage and sharing of information flow and current to improve the security of energy transaction data, transparency of information, and level of automation certification in a distributed network environment. This will actively promote the popularization of electric vehicles.