Research On Identity Authentication And Secure Transaction Of Energy Internet Based On Blockchain

With the continuous deepening of the world's energy transformation,a modern energy system centered on smart grids and multi-energy linkages is gradually taking shape,and the concept of the Energy Internet was brought up.The widespread application of distributed and renewable energy has enabled traditional household electrical consumers to have the ability to supply electricity.There is a growing need for users to trade in energy.The traditional power grid is a centralized large-scale power station.It only communicates with smart meters on the user side.The identity authentication scheme is relatively simple.In the future,the Energy Internet will have a large number of terminal accesses,and communication needs will become increasingly prominent.Therefore,how to enable users to access Energy Internet services through secure and effective identity authentication scheme and how to allow users to conduct energy transactions safely are the two major challenges.The main work and contributions of this paper are as follows:(1)We discuss the potential security risks of the Energy Internet,and summarizes the research on security requirements for identity authentication and energy transactions in Energy Internet and its schemes.On this basis,this paper makes an in-depth study on some security problems existing in energy transaction and identity authentication,and proposes a system model for Energy Internet.(2)We propose an Energy Internet identity authentication scheme based on blockchain.This scheme combines blockchain with cryptographic accumulator.In this scheme,we propose an energy chain suitable for Energy Internet,and reaches a consensus based on the credit value mechanism.Energy Routers and users can use the energy chain to complete identity authentication.Our security analysis demonstrates that privacy and authentication are both achieved in the scheme.Experimental results illustrate that this scheme effectively improves authentication efficiency.(3)We propose a distributed power security transaction scheme based on blockchain.This scheme aims to solve the problems of privacy leakage and security failure in the transaction process.Electric energy transactions will be realized by means of transaction chains,divided into public transactions and private transactions.Private transaction and permission control function of smart contract can protect user's transaction privacy and security.The introduction of supervisory nodes will help achieve consensus in the blockchain.Experimental results show the effectiveness of this scheme.