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PEQ: A Privacy-Preserving Scheme for Exact Query Evaluation in Distributed Sensor Data Networks

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4 Author(s)
Vu, H. ; Dept. of Comput. Sci., Univ. of Texas at Dallas, Richardson, TX, USA ; Thuc Nguyen ; Mittal, N. ; Venkatesan, S.

Evaluating queries in distributed sensor networks while preserving privacy of data is a challenging problem. In this paper, we propose a new scheme for evaluating almost all types of queries, including sum, min/max, mean, median and histogram, accurately while, at the same time, preserving privacy of individual data. Our scheme does not require sensor nodes to share secret keys with each other. Further, it does not use encryption and secure hashing, both of which can be expensive operations.

Published in:

Reliable Distributed Systems, 2009. SRDS '09. 28th IEEE International Symposium on

Date of Conference:

27-30 Sept. 2009