EPPDR: An Efficient Privacy-Preserving Demand Response Scheme with Adaptive Key Evolution in Smart Grid
EPPDR: An Efficient Privacy-Preserving Demand Response Scheme with Adaptive Key Evolution in Smart Grid
复制标题
DOI：
10.1109/tpds.2013.124
复制
发表时间：
2014-08-01
影响因子：
5.3
通讯作者：
Shen, Xuemin (Sherman)
中科院分区：
文献类型：
--
作者：
Li, Hongwei;Lin, Xiaodong;Shen, Xuemin (Sherman)
智能电网以其分布式能量控制、对负荷波动的鲁棒性、用户与电网的紧密交互等特点，成为下一代电网的发展方向。作为智能电网的重要组成部分，需求响应可以维持供需平衡，降低用户电费。此外，在智能电网中保护用户隐私和网络安全也至关重要。在本文中，我们提出了一个有效的隐私保护需求响应（EPPDR）计划，采用同态加密实现隐私保护的需求聚集和有效的响应。此外，还研究了一种自适应密钥演化技术，以保证用户会话密钥的前向安全。安全性分析表明，EPPDR能够实现用户用电需求的保密性、用户会话密钥的前向保密性和用户私钥的演化。与已有的前向保密方案相比，EPPDR在计算和通信开销方面具有更高的效率，并能自适应地控制密钥演化，平衡通信效率和安全性之间的矛盾。
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.