Double-Blockchain Assisted Secure and Anonymous Data Aggregation for Fog-Enabled Smart Grid

• 作者: Siguang Chen Li Yang Chuanxin Zhao Vijayakumar Varadarajan Kun Wang
• 来源期刊: 工程（英文）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Smart Grid and Energy Internet-Article
• 页码范围: 159-169
• 页数: 11页
• 语种: 英文

摘要

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.