Cluster-Based Trust Evaluation Scheme in an Ad Hoc Network

• Published in: ETRI journal Vol. 27; no. 4; pp. 465 - 468
• Main Authors: Jin, Seung-Hun, Park, Chan-Il, Choi, Dae-Seon, Chung, Kyo-Il, Yoon, Hyun-Soo
• Format: Journal Article
• Language: Korean
• Published: 한국전자통신연구원 01.08.2005; ETRI
• Subjects: 전자/정보통신공학; security; clustering; Ad hoc network; trust evaluation
• ISSN: 1225-6463; 2233-7326

This paper presents a new trust evaluation scheme in an ad hoc network. To overcome the limited information about unfamiliar nodes and to reduce the required memory space, we propose a cluster-based trust evaluation scheme, in which neighboring nodes form a cluster and select one node as a cluster head. The head issues a trust value certificate that can be referred to by its non-neighbor nodes. In this way, an evaluation of an unfamiliar node's trust can be done very efficiently and precisely. In this paper, we present a trust evaluation metric using this scheme and some operations for forming and managing a cluster. An analysis of the proposed scheme over some security problems is also presented.