Pairwise Key Establishmentin Heterogeneous Sensor Networks
Date Issued
2009
Date
2009
Author(s)
Ko, Ying-I
Abstract
Pairwise key establishment in sensor networks is a challenging task because public key cryptography is not desirable on resource-limited sensor nodes. In order to improve performance, some of existing key management schemes proposed to cooperate with deployment information for key distribution. However, in some applications, deployment information of sensor nodes may not be available. In this thesis, we first propose a scheme which leverages heterogeneous sensor network and polynomial-based approach to do pairwise key establishment if there is no deployment information available. The analysis demonstrates that the proposed scheme is not only more efficient, but can also achieve better resilience against node compromises. We then extend our proposed scheme to a cluster-based key predistribution scheme. In addition to its efficiency, the extended scheme can offer perfect security for protecting sensor networks.
Subjects
pairwise key establishment
sensor network
Type
thesis
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