Research On Privacy Preserving Of Electric Vehicle Users Based On Blockchain

As a power application product with great environmental protection potential,the electric vehicle has gradually attracted the attention of the academic community.Especially after entering the era of low-carbon development,with the continuous advancement of new energy technologies,electric vehicles have been integrated into people’s daily life.However,in the centralized electric vehicle communication mode,the centralized storage mode is prone to data security problems,such as data tampering,data leakage,and single point of failure.Moreover,when a mass of electric vehicles are connected to charging service companies through the vehicle-to-grid technology to seek intelligent services such as charging and discharging scheduling,settlement,and remote control,their inefficient two-way communication will cause the problem of long service response cycle.In addition,the communication network between the electric vehicle and the charging service control center is public,and it is easy to cause privacy preserving problems during communication.Therefore,in this process,efficient privacy preserving for electric vehicle users has become a must.In view of the above problems,the specific work of this paper is as follows:First of all,an application scenario model of electric vehicle charging and discharging based on consortium blockchain is constructed in this paper,designs the specific framework and realization process of the model.According to the application scenario,specific framework and realization process of the model,a distributed storage scheme based on consortium blockchain,a privacy preserving scheme for electric vehicles based on certificateless aggregate signcryption and a privacy preserving scheme for electric vehicles based on certificateless multi-message and multi-receiver signcryption are designed in this paper.Secondly,in view of the data security problem of the centralized storage mode,a distributed storage scheme based on consortium blockchain is designed in this paper.In addition,a consensus mechanism suitable for the scheme is designed by us too,which improves the consensus efficiency of the scheme.The theoretical analysis proves that the scheme has the characteristics of security,non-tampering,and low energy consumption.Thirdly,in view of the privacy preserving problem encountered when the electric vehicle uploads information to the charging service control center,a privacy preserving scheme for electric vehicles based on certificateless aggregate signcryption is designed in this paper.The scheme generates pseudo-identity and aggregate signcryption through keys,which enables electric vehicle users to charge and discharge with pseudo-identity and enjoy other intelligent services,and protects the privacy and security of users uploading information to the charging service control center.The theoretical analysis proves that the scheme has the characteristics of correctness,security and mutual authentication.The experimental analysis proves that the scheme has lower computational cost than other existing schemes.Fourthly,in view of the privacy preserving problem encountered when the charging service control center broadcasts information to the electric vehicle,a privacy preserving scheme for electric vehicles based on certificateless multi-message and multi-receiver signcryption is designed in this paper.On the basis of certificateless signcryption,the scheme meets the communication needs of broadcasting,and ensures that the private information in the electric vehicle user information will not be leaked when the charging service control center broadcasts the electric vehicle user information.The theoretical analysis proves that the scheme has the characteristics of correctness,security and mutual authentication.The experimental analysis proves that the scheme has lower computational cost than other existing schemes.