부산대학교 도서관

Summary: ``Wireless sensor networks (WSNs) are often deployed inantagonistic environments and thus nodes can be potentially captured byan adversary. Therefore, the security is a fundamental issue in sensornetworks and key management is a basic security service in thesenetworks. Due to the limitations on sensor nodes, the traditional keymanagement techniques are not suitable. Recently, a number of keypredistribution techniques are proposed for establishing the pairwisekey in sensor networks by some researchers. In this paper, we propose akey predistribution scheme based on multivariate polynomials. The basicidea of our approach is to apply the combinatorial design theory in themultivariate key predistribution scheme. In this scheme, using the IDsof sensors as an $d$ tuple of positive integers and the combinatorialdesign, the shares of multivariate polynomials store in sensor nodesbefore the network deployment. Our results in this paper show that theour proposed approach has better security than the previous schemes interms of resilience against node capture without the additionalcommunication overhead.''