Providing Distributed Certificate Authority Service in Mobile Ad Hoc Networks

Authors:
Y. Dong;H. W. Go;A. F. Sui;Victor O. K. Li;Lucas C. K. Hui;S. M. Yiu
Affiliations:
The University of Hong Kong;The University of Hong Kong;The University of Hong Kong;The University of Hong Kong;The University of Hong Kong;The University of Hong Kong
Venue:
SECURECOMM '05 Proceedings of the First International Conference on Security and Privacy for Emerging Areas in Communications Networks
Year:
2005

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Building a virtual hierarchy to simplify certification path discovery in mobile ad-hoc networks

Computer Communications

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Abstract

In this paper, we propose an architecture for providing distributed Certificate Authority (CA) service in Mobile Ad Hoc Networks (MANET), based on threshold cryptography. We have two major contributions: 1) we make use of the cluster structure to provide CA service, and design a scheme for locating CA server nodes in MANET; 2) we provide a proactive secret share update protocol, which periodically updates CA secret shares with low system overhead. Compared with existing approaches, our CA architecture provides faster CA services to user nodes at reduced system overhead.