The smart meters in electricity grids enable fine-grained consumption monitoring. Thus,udsuppliers could adjust their tariffs. However, as smart meters are deployed within the smart gridudfield, authentication and key establishment between smart grid parties (smart meters, aggregators,udand servers) become an urgency. Besides, as privacy is becoming a big concern for smart meters,udsmart grid parties are reluctant to leak their real identities during the authentication phase. In thisudpaper, we analyze the recent authentication schemes in smart grids and other applied fields, andudpropose an anonymous authentication and key establishment scheme between smart grid parties:udFAuth. The proposed scheme is based on bilinear maps and the computational Diffie–Hellmanudproblem. We changed the way the smart meter parties registered at Key Generation Center, makingudthe proposed scheme robust against various potential attacks that could be launched by the KeyudGeneration Center, as the scheme could avoid the private key of the smart meter parties fromudleaking to the Key Generation Center. Besides, the proposed scheme reduced the computationaludload, both at the smart meter side and at the aggregator side, which make it perfectly suitable forudcomputation-constrained devices. Security proof results show the proposed scheme is secure underudthe BAN logic and random oracle model.
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