OPTIMAL CERTIFICATE UPDATE INTERVAL CONSIDERING COMMUNICATION COSTS IN PKI

S. Nakamura, M. Arafuka and T. Nakagawa
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S. Nakamura: Department of Human Life and Information, Kinjo Gakuin University, 1723 Omori 2-chome, Moriyama-ku, Nagoya 463-8521, Japan
M. Arafuka: Department of Human Life and Information, Kinjo Gakuin University, 1723 Omori 2-chome, Moriyama-ku, Nagoya 463-8521, Japan
T. Nakagawa: Department of Marketing and Information Systems, Aichi Institute of Technology, 1247 Yachigusa, Yagusa-cho, Toyota 470-0392, Japan

Chapter 16 in Recent Advances in Stochastic Operations Research, 2007, pp 235-244 from World Scientific Publishing Co. Pte. Ltd.

Abstract: AbstractCA (Certification Authority) in PKI (Public Key Infrastructure) issues the certification pubic keys to the user as the method of proving the owner of the public keys. When various circumstances may cause that a certificate becomes invalid prior to the expiration of the validity period, the PKI user confirms the certificate is effective in regularly acquiring CRL(Certification Revocation List) from the repository. For this, there is an inquiry method by online. However, supplying real-time information on revocation status during each of acquiring is computationally expensive. In addition, the transmission of large CRLs to potentially many clients can be prohibitively expensive. Then, we analytically discuss optimal issuing cycle times of CRL which minimize the various expected costs per unit of time.

Keywords: Operations Research; Uncertainty; Applied Probability; Stochastic Process; Optimization; Decision Science (search for similar items in EconPapers)
Date: 2007
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