Research On Security Protection Technology Of Electric Vehicle Charging Pile Based On Blockchain

As one of the seven strategic emerging industries in China,new energy vehicles can meet the requirements of "zero emissions" and "low noise",and can effectively respond to energy crisis and environmental pollution.Among them,as a representative of new energy vehicles,electric vehicles have been recognized as the main direction of the reform and development of the automobile industry in the 21st century.Electric vehicle charging facilities as an important part of the development of the electric vehicle industry,the improvement of its informatization level is conducive to the large-scale development of the electric vehicle industry.In response to the information security issues of electric vehicle charging piles(hereinafter referred to as charging piles),we need to plan ahead and make preparations in advance.The research object in this article is the distributed charging piles,and the experimental research is closely focused on the safety protection issues related to the charging piles.Combining blockchain technology and encryption algorithms,this paper focuses on the information security protection and key management of charging piles.(1)This paper analyzes the information security threat of the charging pile to determine the information security requirements of the charging pile.In view of the lack of information maintenance technology after the charging pile leaves the factory,the large amount of computing power and storage space waste caused by the use of double encryption technology in the data transmission process,a data protection method for charging pile based on blockchain technology is proposed.This method combines the blockchain technology to protect the entire process after the charging pile is tested and shipped from the factory,the purpose is to ensure the safety and integrity of the data.The method is not only high in security,low in cost,strong in practicability,but also easy to popularize.It can be applied to many technical fields such as data interaction and privacy protection of Internet of things devices,and has broad application prospects.(2)Next,the paper optimizes and improves the scalar multiplication operation in the elliptic curve encryption algorithm.Representing the random number k in the form of a binary number,reduce the calculation amount of the kP operation,and use Hamming weight reduction inversion operation to improve the elliptic curve encryption algorithm computing efficiency.The experimental results show that the improved method in this paper effectively improves the operation efficiency.(3)In order to further improve the communication security and communication efficiency between the operation management platform,charging pile monitoring system,and charging piles.Based on the key management requirements of charging piles,this paper proposes a distributed key management scheme based on blockchain technology.The article introduces in detail from the three aspects of key generation,update and cancellation.And through the experimental analysis of the scheme,it can be seen that the proposed scheme has higher response efficiency and safety,and is more suitable for electric vehicle charging infrastructure,which helps promote the construction of charging infrastructure.