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International Journal of Digital Multimedia Broadcasting
Volume 2011, Article ID 382147, 9 pages
Research Article

BVS: A Lightweight Forward and Backward Secure Scheme for PMU Communications in Smart Grid

1School of Computer Science, China University of Geosciences, Wuhan 430074, China
2School of Software Engineering, Key Laboratory of Network and Information Attack and Defense Technology of MoE, Beijing 100876, China
3Department of Information and Communication Technology, University of Agder (UiA), Grimstad, Norway

Received 30 November 2010; Accepted 20 April 2011

Academic Editor: Pierangela Samarati

Copyright © 2011 Wei Ren et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In smart grid, phaser measurement units (PMUs) can upload readings to utility centers via supervisory control and data acquisition (SCADA) or energy management system (EMS) to enable intelligent controlling and scheduling. It is critical to maintain the secrecy of readings so as to protect customers' privacy, together with integrity and source authentication for the reliability and stability of power scheduling. In particular, appealing security scheme needs to perform well in PMUs that usually have computational resource constraints, thus designed security protocols have to remain lightweight in terms of computation and storage. In this paper, we propose a family of schemes to solve this problem. They are public key based scheme (PKS), password based scheme (PWS) and billed value-based scheme (BVS). BVS can achieve forward and backward security and only relies on hash functions. Security analysis justifies that the proposed schemes, especially BVS, can attain the security goals with low computation and storage cost.