A distributed Wireless Sensor Network (WSN) is a collection of low-end devices with wireless message exchange capabilities. Due to the scarcity of hardware resources, the lack of network infrastructures, and the threats to security, implementing secure pair-wise communications among any pair of sensors is a challenging problem in distributed WSNs. In particular, memory and energy consumption as well as resilience to sensor physical compromise are the most stringent requirements. In this paper, we introduce a new threat model to communications confidentiality in WSNs, the smart attacker model. Under this new, more realistic model, the security features of previously proposed schemes decrease drastically. We then describe a novel pseudo-random key pre-deployment strategy ESP that combines all the following properties: (a) it supports an energy-efficient key discovery phase requiring no communications; (b) it provides node to node authentication; (c) it is highly resistant to the smart attacker. We provide both asymptotic results and extensive simulations of the schemes that are being proposed.
Energy efficient node-to-node authentication and communication confidentiality in wireless sensor networks / R., Di Pietro; Mancini, Luigi Vincenzo; Mei, Alessandro. - In: WIRELESS NETWORKS. - ISSN 1022-0038. - STAMPA. - 12:6(2006), pp. 709-721. (Intervento presentato al convegno 4th International Workshop on Algorithms for Wireless, Mobile, Ad Hoc and Sensor Networks tenutosi a Santa Fe, NM nel APR 30, 2004) [10.1007/s11276-006-6530-5].
Energy efficient node-to-node authentication and communication confidentiality in wireless sensor networks
MANCINI, Luigi Vincenzo;MEI, Alessandro
2006
Abstract
A distributed Wireless Sensor Network (WSN) is a collection of low-end devices with wireless message exchange capabilities. Due to the scarcity of hardware resources, the lack of network infrastructures, and the threats to security, implementing secure pair-wise communications among any pair of sensors is a challenging problem in distributed WSNs. In particular, memory and energy consumption as well as resilience to sensor physical compromise are the most stringent requirements. In this paper, we introduce a new threat model to communications confidentiality in WSNs, the smart attacker model. Under this new, more realistic model, the security features of previously proposed schemes decrease drastically. We then describe a novel pseudo-random key pre-deployment strategy ESP that combines all the following properties: (a) it supports an energy-efficient key discovery phase requiring no communications; (b) it provides node to node authentication; (c) it is highly resistant to the smart attacker. We provide both asymptotic results and extensive simulations of the schemes that are being proposed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.