Multidimensional Data Aggregation Scheme for Smart Grid with Differential Privacy

Xiuxia Tian ； Qian Song ； Fuliang Tian

《International Journal of Network Security》 20卷6期 (2018/11) Pp. 1137-1148

https://doi.org/10.6633/IJNS.201811_20(6).14

摘要

The use of smart meters allows the power supplier to collect detailed consumer data from consumers, which may threaten consumers' personal information. In order to protect the privacy of consumers and prevent data leakage from specific consumers, we propose a multidimensional data aggregation scheme with differential privacy. The proposed scheme uses the Horner rule to deal with multidimensional data. The proposed scheme uses certificate-based aggregate short signature to achieve data authentication and data integrity, which reduces the number of bilinear pairing to a constant. Specially, our proposed scheme overcomes the differential attack problem by adding Laplace noise to aggregated data. We analyze the level of differential privacy utility. Compared to existing schemes, the proposed scheme is more efficient in terms of computational cost and communication overhead.

關鍵字

Data Aggregation ； Differential Privacy ； Privacy Protection ； Smart Grid