Secure and Fault-Tolerant Event Boundary Detection in Wireless Sensor Networks

Event boundary detection is in and of itself a useful application in Wireless Sensor Networks (WSNs). Typically, it includes the detection of a large-scale spatial phenomenon such as the transportation front line of a contamination or the diagnosis of network health. This paper presents SEBD, a fully distributed and light-weight Secure Event Boundary Detection scheme, which implements secure and fault-tolerant detection of event boundaries in an adversarial environment. An efficient key establishment protocol is first proposed which establishes location based keys at each sensor node to secure the communications.