모바일 애드 혹 네트워크 상에서 가중치를 둔 비밀 공유를 이용한 분산 인증 기관 구축 방법
- 모바일 애드 혹 네트워크 상에서 가중치를 둔 비밀 공유를 이용한 분산 인증 기관 구축 방법
- Date Issued
- Node authentication is an essential security service in mobile ad-hoc networks
(MANETs). To provide a node authentication service, we have to construct a
distributed certificate authority in MANETs. Many distributed certificate
authority schemes were proposed, but Fully Distributed Certificate Authority
(FDCA) schemes are suitable for MANETs because they don’t need any
unrealistic assumptions and they can provide certificate services based on one-hop
neighbor nodes. However, FDCA schemes cannot provide certificate service
when there are not enough neighbors. In this thesis, to solve the number of
neighbor node problem in FDCA schemes, we propose a distributed certificate
authority scheme with weighted secret sharing. Proposed scheme can enhance the
certificate service stability by adjusting each CA node’s secret share weight with
considering current node degree information. To adjust the share weight, we also
proposed a bivariate polynomial-based weighted threshold signature scheme. We
have analyzed our scheme based on security criteria, and have conducted
extensive experiments using the ns-2 simulator to evaluate our scheme and
compare it with previous schemes.
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