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AC-PKI: anonymous and certificateless public-key infrastructure for mobile ad hoc networks

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5 Author(s)
Yanchao Zhang ; Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA ; Wei Liu ; Wenjing Lou ; Yuguang Fang
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This paper studies public-key management, a fundamental problem in providing security support for mobile ad hoc networks. The infrastructureless nature and network dynamics of ad hoc networks make the conventional certificate-based public-key solutions less suitable. To tackle this problem, we propose a novel anonymous and certificateless public-key infrastructure (AC-PKI) for ad hoc networks. AC-PKI enables public-key services with certificateless public keys and thus avoids the complicated certificate management inevitable in conventional certificate-based solutions. To satisfy the demand for private keys during network operation, we employ the secret-sharing technique to distribute a system master-key among a preselected set of nodes, called D-PKG, which offer a collaborative private-key-generation service. In addition, we identify pinpoint attacks against D-PKG and propose anonymizing D-PKG as the countermeasure. Moreover, we determine the optimal secret-sharing parameters to achieve the maximum security.

Published in:

IEEE International Conference on Communications, 2005. ICC 2005. 2005  (Volume:5 )

Date of Conference:

16-20 May 2005