Takeshi Okamoto

Takeshi Okamoto, Yoshiteru Ishida: Towards an immunity-based anomaly detection system for network traffic. KES Journal 15(4): 215-225 (2011)

Haruki Shida, Takeshi Okamoto: A Vulnerability Remediation Support System Using a Peer-to-Peer Network. KES (4) 2011: 298-307

Jean-Luc Beuchat, Hiroshi Doi, Kaoru Fujita, Atsuo Inomata, Piseth Ith, Akira Kanaoka, Masayoshi Katouno, Masahiro Mambo, Eiji Okamoto, Takeshi Okamoto, Takaaki Shiga, Masaaki Shirase, Ryuji Soga, Tsuyoshi Takagi, Ananda Vithanage, Hiroyasu Yamamoto: FPGA and ASIC implementations of the eta_T pairing in characteristic three. Computers & Electrical Engineering 36(1): 73-87 (2010)

Chifumi Sato, Takeshi Okamoto, Eiji Okamoto: Strongly unforgeable ID-based signatures without random oracles. IJACT 2(1): 35-45 (2010)

Raylin Tso, Xun Yi, Tadahiko Ito, Takeshi Okamoto, Eiji Okamoto: Design and Analysis of "Flexible" k-out-of-n Signatures. ATC 2010: 255-267

Haruki Shida, Takeshi Okamoto, Yoshiteru Ishida: Evaluations of Immunity-Based Diagnosis for a Motherboard. KES (3) 2010: 628-636

Chifumi Sato, Takeshi Okamoto, Eiji Okamoto: Sender Authenticated Key Agreements without Random Oracles. IEICE Transactions 92-A(8): 1787-1794 (2009)

Takeshi Okamoto, Yoshiteru Ishida: Towards an immunity-based system for detecting masqueraders. KES Journal 13(3-4): 103-110 (2009)

Chifumi Sato, Takeshi Okamoto, Eiji Okamoto: Strongly Unforgeable ID-Based Signatures without Random Oracles. ISPEC 2009: 35-46

Raylin Tso, Takeshi Okamoto, Eiji Okamoto: Efficient Short Signatures from Pairing. ITNG 2009: 417-422

Chifumi Sato, Takeshi Okamoto, Eiji Okamoto: Underlying Assumptions and Designated Verifier Signatures. IACR Cryptology ePrint Archive 2009: 499 (2009)

Sk. Md. Mizanur Rahman, Nidal Nasser, Atsuo Inomata, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto: Anonymous authentication and secure communication protocol for wireless mobile ad hoc networks. Security and Communication Networks 1(2): 179-189 (2008)

Atsushi Koide, Raylin Tso, Takeshi Okamoto, Eiji Okamoto: A Restricted Undeniable Designated Verifier Signature. APSCC 2008: 1375-1380

Hideyuki Tanaka, Takeshi Okamoto: Effects of Information Communication Technology on Urban and Rural Service Sectors: An Empirical Analysis of Japanese Economic Geography. II3E 2008: 265-277

Raylin Tso, Xun Yi, Takeshi Okamoto, Eiji Okamoto: Efficient convertible Limited Verifier Signatures. ISIT 2008: 230-234

Raylin Tso, Takeshi Okamoto, Eiji Okamoto: 1-out-of-. ISPEC 2008: 45-55

Takeshi Okamoto, Yoshiteru Ishida: Dynamic Updating of Profiles for an Immunity-Based Anomaly Detection System. KES (3) 2008: 456-464

Chifumi Sato, Takeshi Okamoto, Eiji Okamoto: Strongly Unforgeable ID-based Signatures Without Random Oracles. IACR Cryptology ePrint Archive 2008: 95 (2008)

Jean-Luc Beuchat, Hiroshi Doi, Kaoru Fujita, Atsuo Inomata, Piseth Ith, Akira Kanaoka, Masayoshi Katouno, Masahiro Mambo, Eiji Okamoto, Takeshi Okamoto, Takaaki Shiga, Masaaki Shirase, Ryuji Soga, Tsuyoshi Takagi, Ananda Vithanage, Hiroyasu Yamamoto: FPGA and ASIC Implementations of the eta_T Pairing in Characteristic Three. IACR Cryptology ePrint Archive 2008: 280 (2008)

Lihua Wang, Eiji Okamoto, Ying Miao, Takeshi Okamoto, Hiroshi Doi: An ID-SP-M4M Scheme and Its Security Analysis. IEICE Transactions 90-A(1): 91-100 (2007)

Raylin Tso, Chunxiang Gu, Takeshi Okamoto, Eiji Okamoto: Efficient ID-Based Digital Signatures with Message Recovery. CANS 2007: 47-59

Raylin Tso, Takeshi Okamoto, Eiji Okamoto: ECDSA-Verifiable Signcryption Scheme with Signature Verification on the Signcrypted Message. Inscrypt 2007: 11-24

Raylin Tso, Juan Manuel González Nieto, Takeshi Okamoto, Colin Boyd, Eiji Okamoto: Verifier-Key-Flexible Universal Designated-Verifier Signatures. IMA Int. Conf. 2007: 403-421

Raylin Tso, Takeshi Okamoto, Eiji Okamoto: An Improved Signcryption Scheme and Its Variation. ITNG 2007: 772-778

Takeshi Okamoto, Yoshiteru Ishida: Framework of an Immunity-Based Anomaly Detection System for User Behavior. KES (3) 2007: 821-829

Tsuyoshi Takagi, Tatsuaki Okamoto, Eiji Okamoto, Takeshi Okamoto (Eds.): Pairing-Based Cryptography - Pairing 2007, First International Conference, Tokyo, Japan, July 2-4, 2007, Proceedings. Lecture Notes in Computer Science 4575, Springer 2007, isbn 978-3-540-73488-8

Lihua Wang, Zhenfu Cao, Takeshi Okamoto, Ying Miao, Eiji Okamoto: Authorization-Limited Transformation-Free Proxy Cryptosystems and Their Security Analyses. IEICE Transactions 89-A(1): 106-114 (2006)

Sk. Md. Mizanur Rahman, Atsuo Inomata, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto: Anonymous Secure Communication in Wireless Mobile Ad-Hoc Networks. ICUCT 2006: 140-149

Takeshi Okamoto, Yoshiteru Ishida: Towards an Immunity-Based Anomaly Detection System for Network Traffic. KES (2) 2006: 123-130

Raylin Tso, Chunxiang Gu, Takeshi Okamoto, Eiji Okamoto: An Efficient ID-based Digital Signature with Message Recovery Based on Pairing. IACR Cryptology ePrint Archive 2006: 195 (2006)

Sk. Md. Mizanur Rahman, Atsuo Inomata, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto: Anonymous Secure Communication in Wireless Mobile Ad-hoc Networks. IACR Cryptology ePrint Archive 2006: 328 (2006)

Lihua Wang, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto: A Subject-Delegated Decryption Scheme with "Tightly" Limited Authority. IACR Cryptology ePrint Archive 2006: 344 (2006)

Raylin Tso, Takeshi Okamoto, Tsuyoshi Takagi, Eiji Okamoto: An id-based non-interactive tripartite key agreement protocol with K-resilience. Communications and Computer Networks 2005: 38-42

Lihua Wang, Takeshi Okamoto, Tsuyoshi Takagi, Eiji Okamoto: Insider Impersonation-MIM Attack to Tripartite Key Agreement Scheme and an Efficient Protocol for Multiple Keys. CIS (2) 2005: 198-203

Raylin Tso, Takeshi Okamoto, Eiji Okamoto: Practical Strong Designated Verifier Signature Schemes Based on Double Discrete Logarithms. CISC 2005: 113-127

Takeshi Okamoto, Atsuo Inomata, Eiji Okamoto: A Proposal of Short Proxy Signature using Pairing. ITCC (1) 2005: 631-635

Takeshi Okamoto: A Worm Filter Based on the Number of Unacknowledged Requests. KES (2) 2005: 93-99

Eiji Okamoto, Takeshi Okamoto: Cryptosystems Based on Elliptic Curve Pairing. MDAI 2005: 13-23

Takeshi Okamoto, Raylin Tso, Eiji Okamoto: One-Way and Two-Party Authenticated ID-Based Key Agreement Protocols Using Pairing. MDAI 2005: 122-133

Lihua Wang, Eiji Okamoto, Ying Miao, Takeshi Okamoto, Hiroshi Doi: ID-Based Series-Parallel Multisignature Schemes for Multi-Messages from Bilinear Maps. WCC 2005: 291-303

Malapati Raja Sekhar, Takeshi Okamoto, Eiji Okamoto: On Designatedly Verified (Non-interactive) Watermarking Schemes. IACR Cryptology ePrint Archive 2005: 120 (2005)

Raylin Tso, Takeshi Okamoto, Eiji Okamoto: Simple and Provable Secure Strong Designated Verifier Signature Schemes. IACR Cryptology ePrint Archive 2005: 238 (2005)

Raylin Tso, Ying Miao, Takeshi Okamoto, Eiji Okamoto: A Share-Correctable Protocol for the Shamir Threshold Scheme and Its Application to Participant Enrollment. IACR Cryptology ePrint Archive 2005: 239 (2005)

Takeshi Okamoto, Takayuki Watanabe, Yoshiteru Ishida: Mechanism for Generating Immunity-Based Agents that Detect Masqueraders. KES 2004: 534-540

Takeshi Okamoto, Hirofumi Katsuno, Eiji Okamoto: A Fast Signature Scheme Based on New On-line Computation. ISC 2003: 111-121

Takeshi Okamoto, Takayuki Watanabe, Yoshiteru Ishida: Towards an Immunity-Based System for Detecting Masqueraders. KES 2003: 488-495

Takeshi Okamoto, Yoshiteru Ishida: An analysis of a model of computer viruses spreading via electronic mail. Systems and Computers in Japan 33(14): 81-90 (2002)

Takeshi Okamoto, Mitsuru Tada, Atsuko Miyaji: An Improved Fast Signature Scheme without Online Multiplication. Financial Cryptography 2002: 152-167

Takeshi Okamoto, Mitsuru Tada, Atsuko Miyaji: Efficient "on the Fly" Signature Schemes Based on Integer Factoring. INDOCRYPT 2001: 275-286

Takeshi Okamoto, Yoshiteru Ishida: A Distributed Approach to Computer Virus Detection and Neutralization by Autonomous and Heterogeneous Agents. ISADS 1999: 328-331

Takeshi Okamoto, Mitsuru Tada, Eiji Okamoto: Extended Proxy Signatures for Smart Cards. ISW 1999: 247-258