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Wireless sensor networks (WSNs) are made up
of large groups of nodes that perform distributed monitoring
services. Since sensor measurements are often sensitive
data acquired in hostile environments, securing WSN
becomes mandatory. However, WSNs consists of low-end
devices and frequently preclude the presence of a centralized
security manager. Therefore, achieving security is
even more challenging. State-of-the-art proposals rely on:
(1) attended and centralized security systems; or (2)
establishing initial keys without taking into account how to
efficiently manage rekeying. In this paper we present a
scalable group key management proposal for unattended
WSNs that is designed to reduce the rekeying cost when
the group membership changes.
CitacióJuan Hernández Serrano [et al.]. Low-cost group rekeying for unattended wireless sensor networks. "Wireless networks", 2012.