STEF: A Secure Ticket-Based En-route Filtering Scheme for Wireless Sensor Networks

— Node compromise is a serious threat in wireless sensor networks. An adversary can use compromised nodes to inject false data into the network forging events to deceive the base station. Furthermore, an adversary can cause serious damage by injecting a large amount of false messages to deplete the scarce energy resources of the forwarding en-route sensor nodes. In this paper, we propose a Secure Ticket-Based Enroute Filtering Scheme (STEF) that drops false messages enroute. We propose a ticket concept where reply messages are only forwarded if they contain a valid ticket originally issued by the base station. Messages containing no ticket, or an replayed ticket, are immediately filtered out by not compromised sensor nodes. The ticket concept is based on lightweight one-way functions. This enables every en-route node to verify the tickets. Furthermore, our scheme does not need symmetric key sharing between message generating nodes and en-route nodes, which results in a high resilien...

• Type: Conference
• Year: 2007
• Where: IEEEARES
• Authors: Christoph Krauß, Markus Schneider, Kpatcha M. Bayarou, Claudia Eckert
• Keywords: En-route Nodes, En-route Sensor Nodes, IEEEARES 2007, Security Privacy, Sensor Nodes