Journal
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS
Volume 25, Issue 8, Pages 2053-2064Publisher
IEEE COMPUTER SOC
DOI: 10.1109/TPDS.2013.124
Keywords
Smart grid; demand response; privacy-preserving; forward secrecy; key evolution
Funding
- National Natural Science Foundation of China [61350110238, 61103207, U1233108, U1333127, 61272525, 61073106, 61003232]
- International Science and Technology Cooperation and Exchange Program of Sichuan Province, China [2014HH0029]
- Korea-China Young Scientist Exchange Program
- NSERC, Canada
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Smart grid has recently emerged as the next generation of power grid due to its distinguished features, such as distributed energy control, robust to load fluctuations, and close user-grid interactions. As a vital component of smart grid, demand response can maintain supply-demand balance and reduce users' electricity bills. Furthermore, it is also critical to preserve user privacy and cyber security in smart grid. In this paper, we propose an efficient privacy-preserving demand response (EPPDR) scheme which employs a homomorphic encryption to achieve privacy-preserving demand aggregation and efficient response. In addition, an adaptive key evolution technique is further investigated to ensure the users' session keys to be forward secure. Security analysis indicates that EPPDR can achieve privacy-preservation of electricity demand, forward secrecy of users' session keys, and evolution of users' private keys. In comparison with an existing scheme which also achieves forward secrecy, EPPDR has better efficiency in terms of computation and communication overheads and can adaptively control the key evolution to balance the trade-off between the communication efficiency and security level.
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