基于群盲签名的智能电网隐私保护方案研究

Research on Privacy Protection Scheme of Smart Grid Based on Group Blind Signature

为保证电力用户隐私及数据安全,提出了一种基于群盲签名的智能电网隐私保护方案。该方案包含三层结构:控制中心、智能变电站和智能电表。三层协同交互,共同完成电力数据传输过程。为保护用户隐私,提出了一种基于Schnorr身份认证协议的高效匿名认证方法。在仿真阶段,将所提方法与同态加密、属性基群签名(ABGS)、数据聚合等方法对比,所提方法的计算量和时间消耗均有所下降。此外,时间成本随用户和变电站的数量线性增加,但增加速度比略低于其他方法。仿真验证了所提方法能够应用于大规模用户。

A privacy protection scheme of smart grid based on group blind signature is proposed to ensure the privacy and data security of power users.The scheme contains three layers of structure:control center,smart substation,and smart meter.The three layers interact collaboratively to complete the power data transmission process.To protect the privacy of legitimate users,an efficient anonymous authentication method based on Schnorr identity authentication protocol is proposed.In the simulation stage,the proposed method is compared with homomorphic encryption,attribute base group signature(ABGS),and data aggregation,and the computation and time consumption of the proposed method are reduced.In addition,the time cost increases linearly with the number of users and substations,but the rate of increase is slightly lower than that of other methods.The simulation verifies that the proposed method can be applied to large-scale users.