| With the development of the times,the V2G network has become an important part of the smart grid.In order to widely deploy V2G and encourage more electric vehicle users to participate in the energy transaction process,the security and credibility of the network and the protection of user privacy must be resolved.For this reason,this article is based on the consortium blockchain and attribute-based signatures,and attempts to effectively solve the user’s privacy protection mechanism in the V2G network.The specific work and innovations of the paper are as follows:First,the paper analyzes the current application status of V2G network,and puts forward the main security and privacy protection requirements of the network in combination with the application status.On the basis of summarizing the functions of different entities of the traditional V2G network,the formal system model and security model of the V2G network are given.Secondly,the paper proposes a V2G network privacy protection mechanism based on attribute-based signature and consortium blockchain,and gives the formal system model and security model of the mechanism.For the first time,the attribute-based signature scheme is applied to the security and privacy protection communication of the V2G network,ensuring the anonymity in the authentication process of the EV and the multi-party aggregator,and constructing the anonymous incentive distribution scheme of the V2G network system based on the alliance blockchain.Finally,based on the privacy protection scheme proposed in the paper,the security and privacy protection needs of different entities are deeply analyzed,and the formal analysis and security proof of the privacy protection algorithm are carried out.The network performance evaluation and actual simulation experiments prove that the overall scheme is guaranteed The security and anonymity also better control the computing overhead,which can meet the access requirements of larger-scale users in the V2G network. |
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