A novel privacy preserving data aggregation scheme with data integrity and fault tolerance for smart

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1 IntroductionrnBy making the best of the information technology in smart grid,considerable power energy can be effectively saved[1,2].How-ever,frequently collecting user\'s power consumption data in-curs privacy disclosure issues.Meanwhile,data integrity is also critical to make the decisions to be more credible and reliable.And the smart meters for collecting electricity consumptions are prone to communication failures for being deployed in unat-tended environment commonly.In addition,due to limited com-puting resources,especially in the user side,the efficient mech-anism should be designed to improve practicality.Therefore,how to achieve an efficient,secure,and reliable data aggrega-tion scheme for smart grid communications still deserves com-prehensive investigations.Focusing on solving the aforemen-tioned challenging issues,the main contributions of this paper are three-fold.
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