KALwEN: a new practical and interoperable key management scheme for body sensor networks

Law, Yee Wei and Moniava, Giorgi and Gong, Zheng and Hartel, Pieter and Palaniswami, Marimuthu (2010) KALwEN: a new practical and interoperable key management scheme for body sensor networks. Security and communication networks, 4 (11). pp. 1309-1329. ISSN 1939-0122

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Abstract:	Key management is the pillar of a security architecture. Body sensor networks (BSNs) pose several challenges–some inherited from wireless sensor networks (WSNs), some unique to themselves–that require a new key management scheme to be tailor-made. The challenge is taken on, and the result is KALwEN, a new parameterized key management scheme that combines the best-suited cryptographic techniques in a seamless framework. KALwEN is user-friendly in the sense that it requires no expert knowledge of a user, and instead only requires a user to follow a simple set of instructions when bootstrapping or extending a network. One of KALwEN's key features is that it allows sensor devices from different manufacturers, which expectedly do not have any pre-shared secret, to establish secure communications with each other. KALwEN is decentralized, such that it does not rely on the availability of a local processing unit (LPU). KALwEN supports secure global broadcast, local broadcast, and local (neighbor-to-neighbor) unicast, while preserving past key secrecy and future key secrecy (FKS). The fact that the cryptographic protocols of KALwEN have been formally verified also makes a convincing case. With both formal verification and experimental evaluation, our results should appeal to theorists and practitioners alike.
Item Type:	Article
Copyright:	© 2010 Wiley
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Distributed and Embedded Systems (DIES)
Link to this item:	http://purl.utwente.nl/publications/75037
Official URL:	http://dx.doi.org/10.1002/sec.256
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