Research On User Identity And Electricity Data Protection Method Under Advanced Measurement Infrastructure

The advanced measurement infrastructure is a complete network and system that measures,counts,stores,analyzes,and uses the user’s power information.It consists of four parts: the user’s indoor network,smart meters,wide area communication network,and measurement data management system.In the system,on the one hand,smart meters need to send real-time power data reflecting the user’s detailed power consumption information to the control center.These data are fine-grained covering data such as account number,smart meter number,remaining amount,current total power,etc.,Once it is leaked,it will expose the user’s private information such as electricity consumption habits and life rules.On the other hand,the control center will also send control information and electricity price information to users.Once this information is hijacked or tampered with by an illegal attacker,errors will occur in the instructions executed by the smart meter,and normal measurement work cannot be completed.Therefore,in order to ensure the safe,real-time,complete,and reliable transmission of data in the advanced measurement infrastructure,this paper studies the protection methods of user identity and electricity consumption data under the advanced measurement infrastructure,and has completed the following aspects of work :First of all,it analyzes the problems and challenges of user privacy security in the current advanced measurement infrastructure,studies the current solutions to such problems,and improves the existing solutions based on the characteristics of data transmission in the advanced measurement infrastructure.Secondly,in view of the information leakage that may occur in the process of smart meters sending data to the control center,a privacy protection scheme based on the combination of time perturbation mechanism and rin g signcryption is proposed.This scheme combines the time disturbance mechanism and the ring signcryption algorithm.The theory proves that it meets the security requirements and has a significant effect in protecting user privacy.At the same time,the so lution does not use complex calculation methods and is suitable for smart grid devices with limited computing resources.Then,in view of the huge workload problem that the data collector needs to verify the correctness of the ciphertext in turn before rec eiving the signcryption file for designcrypting,a scheme of attribute-based certificateless aggregate signcryption is proposed,And passed the security verification during data transmission.This scheme does not use complex calculations,while ensuring security,greatly reduce the amount of calculation during data transmission and improve transmission efficiency.Finally,through efficiency comparison and related tests with the existing schemes,the usability of the scheme,the running time of each scheme a nd the calculation efficiency are analyzed.The results show that the scheme designed in this paper not only meets the safety performance requirements,but also to a large extent The above improves the calculation efficiency and is suitable for the application environment of the advanced measurement infrastructure.