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With high expansibility of sensor electronic devices, wireless sensor networks have attracted more and more attention. The k nearest neighbors (k-NN) query has become a significant part of sensor networks due to its availability and convenience. However, it is an important but challenging problem to keep privacy and security while still maintaining low energy consumption. In this paper, we address...
With high expansibility and efficient power usage, tiered wireless sensor networks are widely deployed in many fields as an important part of Internet of Things (IoTs). It is challenging to process range query while protecting sensitive data from adversaries. Moreover, most existing work focuses on privacy-preserving range query neglecting collusion attacks and probability attacks, which are more...
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