Abstract
The smart meters in electricity grids enable fine-grained consumption monitoring. Thus, suppliers could adjust their tariffs. However, as smart meters are deployed within the smart grid field, authentication and key establishment between smart grid parties (smart meters, aggregators, and servers) become an urgency. Besides, as privacy is becoming a big concern for smart meters, smart grid parties are reluctant to leak their real identities during the authentication phase. In this paper, we analyze the recent authentication schemes in smart grids and other applied fields, and propose an anonymous authentication and key establishment scheme between smart grid parties: FAuth. The proposed scheme is based on bilinear maps and the computational Diffie–Hellman problem. We changed the way the smart meter parties registered at Key Generation Center, making the proposed scheme robust against various potential attacks that could be launched by the Key Generation Center, as the scheme could avoid the private key of the smart meter parties from leaking to the Key Generation Center. Besides, the proposed scheme reduced the computational load, both at the smart meter side and at the aggregator side, which make it perfectly suitable for computation-constrained devices. Security proof results show the proposed scheme is secure under the BAN logic and random oracle model.
Highlights
The internet of things is applied into many parts of our daily life
In this paper, we proposed an anonymous authentication scheme based on bilinear maps and the computational Diffie–Hellman problem: FAuth, which totally meets the above three requirements as stated
We introduced an anonymous authentication scheme based on bilinear pairing and the computational Diffie–Hellman problem
Summary
The internet of things is applied into many parts of our daily life. Smart meters are one of these. As privacy becomes a concern, people start trying to find ways that smart grid parties could authenticate each other without leaking their identity to adversaries. By data mining or static methods, according to the electricity consumption, the status and income of the inhabitants may be revealed, so anonymous authentication is needed; in FAuth, the identity of the smart meter is encrypted before sending. In this paper, we proposed an anonymous authentication scheme based on bilinear maps and the computational Diffie–Hellman problem: FAuth, which totally meets the above three requirements as stated. Based on the methods of Tsai-Lo [4] and Odelu [5], we proposed FAuth, and the comparison results show that the proposed scheme greatly reduced the computation costs of smart grid parties at the authentication phase.
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