基于身份认证和聚合加密的智能电表数据隐私保护方案

Smart Meter Aata Privacy Protection Scheme Based on Authentication and Aggregation Encryption

智能电表的使用虽然为供用电双方都提供了诸多便利,但由于存在较频繁的信息流传输,也给智能电网中对用户家庭用电数据的隐私保护工作带来了巨大挑战.为了保证即使数据被窃取,不法者依然无法通过数据对用户的行为信息作出判断,提出了一个基于身份认证和聚合加密的智能电表数据隐私保护方案.方案中对数据的保护分为两个阶段,即数据的读取阶段和聚合加密阶段.读取阶段采用盲签名的方式,保证数据读取过程的安全性;聚合加密阶段采用匿名化处理和Paillier同态加密的方式,实现数据的匿名传输,在提高隐私保护安全强度的同时也大大降低了计算和传输开销.方案实现了在保护用户用电数据不被泄露的同时也避免了因海量数据汇聚而造成的系统拥塞问题.

Although the use of smart meters for both power supply provides a lot of convenience,but because of the frequent flow of information transmission,also give to the user in the smart grid electricity data privacy protection work has brought the huge challenge.In order to ensure that even if the data is stolen,the upsurge will not be able to pass data to the user to judge the behavior of the information,this paper proposes a based on identity authentication and aggregation of smart meter data privacy protection scheme.The protection of data in the scheme is divided into two stages,namely the reading stage of data and the stage of aggregation encryption.The reading stage uses the combination of key distribution and identity signature to ensure the security of data reading process.Polymerization phase encryption method of anonymous processing and Paillier homomorphic encryption way,realize the anonymous data transmission,as well as improve the privacy security strength greatly reduces the computation and the transport costs.The scheme realizes the problem of system congestion caused by massive data aggregation while protecting users’ electricity data from being leaked.