A secure smart grid access control method and system resistant to differential attacks

Abstract

The invention provides a security smart grid access control method and system resistant to differential attacks. The trusted authority is responsible for managing and distributing the secret information of the system; the control center is responsible for integrating, processing and analyzing power consumption data; and the power transmission center is responsible for management and transmission network; the power distribution center is responsible for managing the power distribution network; the power supplier is responsible for providing a competitive power retail market; the gateway is responsible for connecting the control center and the power consumption side, and aggregating power consumption; The power data is reported to the control center, and the specific steps include the system initialization stage; the data encryption stage; the data aggregation stage; the data re-encryption and access control stage; the data decryption and data recovery stage. The invention researches and designs a fine-grained security data access control mechanism suitable for multi-receiver application requirements of the smart grid, and can effectively eliminate and resist potential network hidden dangers, collusion attacks and differential attacks from inside and outside the smart grid.

Description

technical field [0001] The invention relates to a method and system for access control of a secure smart grid resistant to differential attacks. Background technique [0002] Relevant scholars have proposed a variety of solutions based on data aggregation for the privacy protection of smart grid communication systems. Mohammed et al. used blinding factors to shield users' personal electricity consumption data. When performing data aggregation, the blinding factors offset each other and obtained the aggregated data of all users. Alsharif et al. designed a homomorphic encryption privacy protection system based on the Paillier cipher mechanism. Each user encrypts its electricity consumption, and performs related operations in the ciphertext domain to decrypt the user's aggregate electricity consumption. Existing data aggregation schemes can only support single-receiver smart grid communication architectures. In order to be suitable for multi-receiver application requirements,...

AI Technical Summary

Problems solved by technology

The existing scheme has the following disadvantages: (1) Since the control center is allowed to classify the ciphertext, the gateway controlled by the control center can understand the customer distribution of each power supplier in each region, thereby destroying the market environment of fair competition ; (2) Sending multiple ciphertext information of aggregated data (for each supplier or for each attribute subset) will significantly increase the communication overhead; (3) There is a potential for system entities to collude with the control center to conduct collusion attacks Network hidden dangers, so that power suppliers pay false power distribution fees to power distribution centers; (4) cannot effectively resist potential differential attacks in smart grid communication systems, and the effectiveness of differential privacy is very low

Therefore, there is a lack of fine-grained security data access control mechanisms suitable for multi-receiver application requirements, ensuring that each recipient can only access their own exclusive data, and effectively eliminating and resisting potential network risks, collusion attacks, and differentials from internal and external sources. A secure and efficient smart grid data aggregation solution and application system for attacks

Images