Secure data gathering protocol over wireless sensor network

Abstract

In order to securely gather data in wireless sensor networks, the path security needs to guarantee between sensors (or cluster heads) and a sink. The previous studies mainly focus on providing security; however, threats by compromised nodes in wireless sensor networks always exist when the sink gathers data from nodes. Approximately, the difficulty in data gathering process can summarize into two problems: one is to construct a secured path and the other is securely to transmit data over the path. In order to tackle two problems addressed, in this paper we propose a secure data gathering protocol over WSNs, which is consisted of a hierarchical key settlement, a secure path construction, and a data gathering over the secure path. The sensor nodes in this scheme have little overhead for the secured key settlement and the path construction. This work provides security analysis focused on the key settlement protocol, and evaluates network performance for the proposed data gathering protocol through simulation.