| Summary: | 碩士 === 國立臺灣科技大學 === 資訊工程系 === 103 === Since wireless sensor networks (WSNs) are often deployed in open environments,attackers can eavesdrop communications between nodes to identify the locations of sources and destinations of messages, which causes privacy and security concerns. Although there exist studies on protecting location privacy of communication endpoints in WSNs, most work tend to overspend resources to protect unimportant data because of lacking data importance considerations.
This paper proposes two schemes on protecting end-to-end location privacy
in WSNs that take data importance levels into account, namely Broadcast-based Hierarchical Hidden Nodes Scheme (HHNB) and Sufficiency-based Hierarchical Hidden Nodes Scheme(HHNS). Both schemes create forged identities to hide the locations the source node and the destination node of a message from a local eavesdropper.
The simulation results show the proposed methods provide better protection
against local eavesdropper than previous researches on end-to-end location privacy in a WSN. Also, HHNS induces less communication costs in generating
forged identities.
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