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Issue No. 09 - Sept. (2015 vol. 14)
ISSN: 1536-1233
pp: 1806-1819
Duncan Yung , Department of Computer Science, University of Pittsburgh, PA 15260, USA, Pittsburgh
Yu Li , Department of Computing, Hong Kong Polytechnic University, Hong Kong
Eric Lo , Department of Computing, Hong Kong Polytechnic University, Hong Kong
Man Lung Yiu , Department of Computing, Hong Kong Polytechnic University, Hong Kong
ABSTRACT
A moving $_$k$_$ NN query continuously reports the $_$k$_$ results (restaurants) nearest to a moving query point (tourist). In addition to the query results, a service provider often returns to a mobile client a safe region that bounds the validity of query results in order to minimize the communication cost between the service provider and that mobile client. However, when a service provider is not trustworthy, it may send inaccurate query results or incorrect safe regions to mobile clients. In this paper, we present a framework for authenticating both the query results and the safe regions of moving $_$k$_$ NN queries. We theoretically proved that our methods for authenticating moving $_$k$_$ NN queries minimize the data sent between the service provider and the mobile clients. Extensive experiments are carried out using both real and synthetic data sets and results show that our methods can perform moving $_$k$_$ NN query authentication with small communication costs and overhead.
INDEX TERMS
Authentication, Mobile computing, Servers, Mobile communication, Generators, Query processing, Spatial databases
CITATION

D. Yung, Y. Li, E. Lo and M. L. Yiu, "Efficient Authentication of Continuously Moving $k$ NN Queries," in IEEE Transactions on Mobile Computing, vol. 14, no. 9, pp. 1806-1819, 2015.
doi:10.1109/TMC.2014.2365203
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