Abstract
With the increasing openness of smart grids, a large quantity of power terminals will be widely applied in systems of smart grids by various access modes (wired, wireless, satellite). In order to ensure the integrity and confidentiality of the data and the security of the communications between power terminals and the smart grid intranet, a lightweight security authentication and key agreement scheme is proposed in this article. The scheme provides mutual authentication based on the SM2 algorithm and key agreement which can prevent various attacks. Furthermore experimental evaluation and comparative analysis is conducted to indicate that the proposed scheme can resist many types of attacks with lower amounts of total computational resources and lower communications bandwidth. The analysis shows that the proposed scheme is suitable for smart grid.
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