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SCIENCE CHINA Information Sciences, Volume 62, Issue 3: 032103(2019) https://doi.org/10.1007/s11432-018-9451-y

EFFECT: an efficient flexible privacy-preserving data aggregation scheme with authentication in smart grid

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  • ReceivedFeb 27, 2018
  • AcceptedMay 14, 2018
  • PublishedJan 11, 2019

Abstract

Smart grid is considered as a promising approach to solve the problems of carbon emission and energy crisis. In smart grid, the power consumption data are collected to optimize the energy utilization. However, security issues in communications still present practical concerns. To cope with these challenges, we propose EFFECT, an efficient flexible privacy-preserving aggregation scheme with authentication in smart grid. Specifically, in the proposed scheme, we achieve both data source authentication and data aggregation in high efficiency. Besides, in order to adapt to the dynamic smart grid system, the threshold for aggregation is adjusted according to the energy consumption information of each particular residential area and the time period, which can support fault-tolerance while ensuring individual data privacy during aggregation. Detailed security analysis shows that our scheme can satisfy the desired security requirements of smart grid. In addition, we compare our scheme with existing schemes to demonstrate the effectiveness of our proposed scheme in terms of low computational complexity and communication overhead.


Acknowledgment

This work was partially supported by Beijing Natural Science Foundation (Grant No. 4182060), and Fundamental Research Funds for the Central Universities (Grant No. 2018ZD06).


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  • Figure 1

    (Color online) The conceptual architecture of smart grid.

  • Figure 2

    (Color online) System model of EFFECT scheme.

  • Figure 3

    (Color online) Initialization process.

  • Figure 4

    (Color online) Computational cost considering fault tolerance.

  • Figure 5

    (Color online) Comparison of communication overhead with (a) different user numbers, and (b) different data size.

  • Table 1   Computation complexity
    Entity name Involving operations Computation complexity
    3*SM (1) User's electricity usage data collection
    3*$4~\times~C_e+3~\times~C_m$
    (2) Data encryption
    (3) Signature $\delta_i$ generation
    3*GW (1) User's data integrity verification and sender authentication
    3*$(2n+1)~\times~C_m+3~\times~C_e$
    (2) User's data aggregation
    (3) Signature $\sigma_j$ generation
    2*CC (1) Aggregated data integrity verification and sender authentication
    2*$3~\times~C_e+2~\times~C_m$
    (2) Data decryption
  • Table 2   Comparison of computation complexity in authentication phrase
    Scheme EPPA EPPDA Shen's scheme EFFECT
    Complexity $(n+1)~\times~C_p$ $2n~\times~C_p$ $(n+2)~\times~C_p$ $n~\times~C_m+C_e$

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