Intelligent power grid safety communication method based on combination cipher

Abstract

The invention discloses an intelligent power grid safety communication method based on a combination cipher. The combination cipher is adopted, one key is used for completing operation such as session key agreement, encryption and signature, and the method adopts an offline / online mode, and as for an intelligent power meter with limited storage space and limited computing power, the needed storage space can be reduced and the computing speed is enhanced. A transfer station is arranged between the intelligent power meter and a power meter data management center (MDMS), and private keys corresponding to the power meter, the transfer station and the MDMS are generated by a key generation center (PKG). A session key is firstly generated between the power meter and the transfer station, and the session key is used for realizing two-way authentication and carrying out communication. Then, a chain transmission mode is adopted, the transfer station acquires data of power meters in a governing range of the transfer station, certain safety operation is carried out, the data are then transmitted to the adjacent next transfer station, and by such analogy, the data finally reach the MDMS.

Description

technical field [0001] The invention belongs to the technical field of secure communication, and in particular relates to a safe communication method between a smart meter and MDMS in a smart grid. Background technique [0002] As a product of the new era, the smart grid will completely replace the current grid architecture in the future and provide more reliable, safer and more convenient services for human life. A major feature of the smart grid is the realization of two-way communication between the user and the power company, so it can predict the energy demand of the user more objectively and avoid the waste caused by excessive power production. At the same time, with the increase and integration of communication, network loopholes in the smart grid also emerge as the times require. Realize smart stealing and smart tracking. One of the goals of the smart grid is to provide consumers with information about their energy consumption in near real-time. For example, consum...

AI Technical Summary

Problems solved by technology

In order to further strengthen the security, based on a mutual authentication and key establishment mechanism, the data collection center and the smart device can perform mutual authentication through the public key certificate of the data collection center and the shared long-term key in advance, but how to distribute the shared long-term key The technical problem of the key prevents the scheme from being widely promoted

In addition, the use of public key certificates, zero-knowledge authentication and access control technologies to achieve multi-factor authentication systems, authentication protocols based on elliptic curves, etc., and the use of symmetric cryptosystems to achieve both two-way authentication and confidentiality protocols, but this protocol Requires a large number of key negotiation processes, requiring multiple authentications before communication

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