Two Improvements of Random Key Predistribution for Wireless Sensor Networks - Revised Version

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Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Fakultu informatiky. Oficiální stránka publikace je na webu muni.cz.
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KŮR Jiří MATYÁŠ Václav ŠVENDA Petr

Rok publikování 2012
Druh Článek v odborném periodiku
Časopis / Zdroj Infocommunications Journal
Fakulta / Pracoviště MU

Fakulta informatiky

Citace
Obor Informatika
Klíčová slova Hash function collision; Key management; Random key predistribution; Security; Wireless sensor network
Popis Key distribution is of a critical importance to security of wireless sensor networks (WSNs). Random key predistribution is an acknowledged approach to the key distribution problem. In this paper, we propose and analyze two novel improvements that enhance security provided by the random key predistribution schemes. The first improvement exploits limited length collisions in secure hash functions to increase the probability of two nodes sharing a key. The second improvement introduces hash chains into the key pool construction to directly increase the resilience against a node capture attack. Both improvements can be further combined to bring the best performance. We evaluate the improvements both analytically and computationally on a network simulator. The concepts used are not limited to the random key predistribution.
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