A method for access authentication of electric vehicles

Abstract

The invention relates to an access authentication method of electric automobiles. The method comprises the following steps that: access authentication systems of the electric automobiles are established; access authentication between the electric automobiles and a charging station is carried out; and the charging station carries out batch signature authentication on the electric automobiles. According to the invention, identity aggregate signatures are introduced into identity validity inspection of the electric automobiles, and bidirectional authentication and session key negotiation are designed between the electric automobiles and the access authentication systems, so that the reasonable usage of the information resources in the station is ensured, and the safety of the whole network system is fundamentally ensured. The batch signature authentication mechanism enables the charging station to verify a plurality of electric automobile terminal signatures in the aggregate manner, the calculation load is lightened, and the performance is improved. The typical identity aggregate signature system is composed of five algorithms: system initialization, private key generation, signing, aggregation and aggregate verification, user identity information can be used to replace a public key thereof, the problem of high certificate cost is solved, and by compressing the plurality signatures into one, the high-efficiency verification is carried out.

Description

Technical field: [0001] The invention relates to an access authentication method of an electric vehicle, and more particularly relates to an access authentication method of an electric vehicle based on an identity aggregation signature. Background technique: [0002] As an important part of the smart grid, electric vehicles have received great attention due to their characteristics of mobile energy storage, energy saving, environmental protection, and cost reduction, and are predicted to be the future of the world's automobile industry. However, severe security challenges also follow, especially the operation service platform relying on the Internet of Things technology makes electric vehicles face a more complex network environment, and are vulnerable to various adversary attacks, such as information tampering and message theft. , replay attacks, forgery attacks, etc., resulting in immeasurable economic losses, seriously restricting the long-term development and application...

AI Technical Summary

Problems solved by technology

However, most of these methods require bilinear pairing operations, and the signatures must be verified one by one. The calculation cost is high, and efficient access authentication cannot be supported.

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