As a future energy system,the smart grid is designed to improve the efficiency of traditional power sys-tems while providing more stable and reliable services.However,this efficient and reliable service relies on collecting and analyzing users'electricity consumption data frequently,which induces various secu-rity and privacy threats.To address these challenges,we propose a double-blockchain assisted secure and anonymous data aggregation scheme for fog-enabled smart grid named DA-SADA.Specifically,we design a three-tier architecture-based data aggregation framework by integrating fog computing and the block-chain,which provides strong support for achieving efficient and secure data collection in smart grids.Subsequently,we develop a secure and anonymous data aggregation mechanism with low computational overhead by jointly leveraging the Paillier encryption,batch aggregation signature and anonymous authentication.In particular,the system achieves fine-grained data aggregation and provides effective support for power dispatching and price adjustment by the designed double-blockchain and two-level data aggregation.Finally,the superiority of the proposed scheme is illustrated by a series of security and computation cost analyses.

Siguang Chen;Li Yang;Chuanxin Zhao;Vijayakumar Varadarajan;Kun Wang

Jiangsu Key Lab of Broadband Wireless Communication and Internet of Things,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Jiangsu Engineering Research Center of Communication and Network Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Anhui Provincial Key Laboratory of Network and Information Security,Anhui Normal University,Wuhu 241000,China;School of Computer Science and Engineering,Vellore Institute of Technology,Chennai 600127,India;Department of Electrical and Computer Engineering,University of California,Los Angeles,CA 90095,USA

工程（英文）

[1]Siguang Chen;Li Yang;Chuanxin Zhao;Vijayakumar Varadarajan;Kun Wang-.Double-Blockchain Assisted Secure and Anonymous Data Aggregation for Fog-Enabled Smart Grid)[J].工程（英文）,2022(01):159-169

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