Academic Degrees
Work Experience
Selected Publications
Jean-Luc Beuchat and Jeremie Detrey and Nicolas Estibals and Eiji Okamoto and Francisco Rodriguez-Henriquez; Hardware Accelerator for the Tate Pairing in Characteristic Three Based on Karatsuba-Ofman Multipliers, CHES2009
Jean-Luc Beuchat, Hiroshi Doi, Kaoru Fujita, Atsuo Inomata, Piseth Ith, Akira Kanaoka, Kasayoshi Katouno, Masahiro Mambo, Eiji Okamoto, Takeshi Okamoto, Takaaki Shiga, Masaaki Shirase, Ryuji Soga, Tsuyosi Takagi, Ananda Vithanage and Hiroyasu Yamamoto; FPGA and ASIC Implementations of the $\eta_T$ Pairing in Characteristic Three, Computers and Electrical Engineering, 2009
Chifumi Sato, Takeshi Okamoto and Eiji Okamoto; Strongly Unforgeable ID-based Signatures Without Random Oracles, IPSEC2009
Seiichi Matsuda, Naoki Kanayama, Florian Hess, Eiji Okamoto; Optimised Versions of the Ate and Twisted Ate Pairings, IEICE Trans. on Fundamentals, Vol.E92-A, No.7, pp.1660-1667, 2009
Akira Kanaoka, Masahito Kato, Nobukatsu Todo and Eiji Okamoto; Extraction of Parameters from Well Managed Networked System in Access Control, The Fourth International Conference on Internet Monitoring and Protection (ICIMP 2009)
Sk. Md. M. Rahman, N. Nasser, A. Inomata, T. Okamoto, M. Mambo and E. Okamoto; Anonymous authentication and secure communication protocol for wireless mobile ad-hoc networks, Security and Communication Networks, Wiley, Vol.1, No.2, pp.179-189, 2008
J.-L. Beuchat, N. Brisebarre, J. Detrey, E. Okamoto, M. Shirase and T. Takagi; "Algorithms and Arithmetic Operators for Computing the |*eta*|T Pairing in Characteristic Three", IEEE Trans. on Computers, vol. 57, no. 11, pp.1454-1468, 2008
X. Yi, M. Faulkner and E. Okamoto; Securing Wireless Sensor Networks, ARES2008 (International Conference on Availability, Reliability and Security), pp.497-502, 2008
R. Tso, Y. Miao and E. Okamoto; "On algorithms for searching a consistent set of shares in a threshold scheme and the related covering problem", Journal of Combinatorial Mathematics and Combinatorial Computing, Charles Babbage Research Centre, vol. 60, pp. 47-63, 2007
J. Lopez, J. A. Montenegro, J. L. Vivas, E. Okamoto and E. Dawson;
"Specification and design of advanced authentication and authorization
services", Computer Standard and Interface Journal, 27, pp.467-478, 2005
Graduate School of Systems and Information Engineering, University of Tsukuba
1-1-1 Tennodai, Tsukuba City, Ibaraki, 305-8573 JAPAN
E-mail : okamoto@risk.tsukuba.ac.jp
Tel : +81 29 853 5277
Fax : +81 29 861 7348
Cryptography and Information Security Laboratory
copyright (C) Cryptography and Information Security Laboratory,
University of Tsukuba
All Rights Reserved.