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The public-key cryptography is indispensable for securing the smart grid communications. In this paper, we propose a hierarchical and fully-connected public key infrastructure that considers the smart grid characteristics. In the proposed public key infrastructure, each certificate authority is responsible for managing the public-key certificates for a geo-bounded small area. We also propose a novel...
We present an anonymous authentication and verification scheme for the IEEE Wireless Access in Vehicular Communications (WAVE)-based vehicular ad hoc networks (VANETs). Our contribution includes vehicular message authentication and an efficient prioritized verification strategy for periodic road safety messages. A variation of elliptic curve digital signature algorithm (ECDSA) is used in combination...
We present an anonymous authentication scheme for vehicular networks, that provides conditional anonymity to collocated vehicles. A modified ECDSA mechanism utilizes the position information of vehicles operating together in close proximity for generation and verification of elliptic curve-based signatures on safety and other application messages. This waives the requirement of a third party public-key...
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