Providing distributed certificate authority service in cluster-based mobile ad hoc networks |
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| Affiliation: | 1. Department of Anatomy and Neurobiology, Central South University School of Basic Medical Science, Changsha, Hunan 410013, China;2. Department of Neurology, Central South University, The Third Affiliated Hospital of Xiangya School of Medicine, Changsha, Hunan 410013, China;3. Department of Human Anatomy, Histology & Embryology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing 100730, China;4. Department of Molecular Biology, Central South University School of Basic Medical Science, Changsha, Hunan 410013, China;5. Wuhan Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities, Wuhan 430074, China |
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| Abstract: | Nodes in a mobile ad hoc network (MANET) are more vulnerable and there is no predefined infrastructure in such a network. Providing secure communication in these networks is an important and challenging problem. Among all proposed schemes, the model of using distributed certificate authorities (CA) based on threshold cryptography and proactive share update using a cluster-based architecture seems to be a promising approach. However, there are two issues that are not well studied in the current literature for this model: (1) how to locate enough CA servers, and (2) how to perform the proactive share update. In this paper, we propose two efficient schemes with low system overhead to tackle these two problems. Compared with existing approaches, our CA architecture provides faster CA services to user nodes at reduced system overhead. The effectiveness of our proposed schemes has been verified by extensive simulation. |
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