An Anonymous Path Routing (APR) Protocol for Wireless Sensor Networks
Jehn‐Ruey Jiang, Jang‐Ping Sheu, Ching Tu, Jih-Wei Wu · 2011
How to secure data communication is an important problem in wireless sensor net-works (WSNs). General solutions to the problem are to encrypt the packet payload with symmetric keys. But those solutions only prevent the packet content from being snooped or tampered. Adversaries still can learn of network topology by the traffic analysis attack for starting devastating attacks such as the denial-of-service attack and the like. In this paper, we propose an anonymous path routing (APR) protocol for WSNs. In APR, data are encrypted by pair-wise keys and transmitted with anonyms between neighboring sensor nodes and anonyms between the source and destination nodes of a multi-hop communica-tion path. The encryption prevents adversaries from disclosing the data, and the anony-mous communication prevents adversaries from observing the relation of the packets for further attacks. We implement APR on the MICAz platform to evaluate its overheads for demonstrating its applicability in practical WSNs.