Multi-service two-factor authentication method and system suitable for V2G network

Abstract

The invention discloses a multi-server two-factor authentication method suitable for a smart grid V2G network. The method comprises the following steps: 1) generating a main private key and system parameters through a trusted registration center KGC; 2) generating user equipment authentication information and user equipment verification information; 3) generating a private key and a public key of the server; 4) performing user equipment verification; 5) enabling a mobile device to send login request information to the server; 6) enabling the mobile device to log in the server after passing the authentication of the server; (7) enabling the mobile device of the electric vehicle user to authenticate the server and carrying out key negotiation with the server; 8) enabling the mobile device of the electric vehicle to calculate the session key and verify the validity of the server message. According to the method, the correctness and the high efficiency of mutual authentication are ensured, and meanwhile, known attacks such as replay attacks, user pretending attacks, server spoofing attacks, the mobile device loss attacks and offline password attacks can be resisted.

Description

technical field [0001] The invention belongs to the technical field of smart grid V2G, and particularly relates to an identity-based multi-server two-factor authentication method and system. Background technique [0002] The rapid development of the Industrial Internet of Things has had a huge impact on applications in industries such as healthcare, transportation manufacturing, and smart grids. In addition, the access of billions of IoT devices (such as sensors, smart meters, aggregators, etc.) makes the smart grid one of the main drivers of the Industrial IoT. With the rapid development of electric vehicles in the world, the vehicle-to-grid (V2G) network mode is regarded as an important part of smart grid communication, and has attracted more and more attention from industry and academia. The core idea of ​​V2G technology is to use electric vehicles to store energy as a buffer for the grid and renewable energy. This can not only solve the problem of low power grid effici...

AI Technical Summary

Problems solved by technology

Considering the high mobility and unpredictability of vehicles in V2G networks, authentication methods based on group signatures and ring signatures need to form a user group relationship in advance, and a large number of complex calculation operations need to be introduced in the signature calculation, which is difficult to adapt to resource constraints. V2G network authentication with limited and unpredictable groups; the registration and authentication method based on the client-server requires the client to register multiple times with servers in different regions or service types to obtain diversified services, and this method is also difficult to apply Mobile V2G networks; some existing multi-server authentication methods for V2G networks do not provide two-factor security authentication of passwords and smart cards

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