Eiji Okamoto

273 papers A* 5A 5B 17C 39Misc 16Journal 113Unranked 76
YearRankTypeTitle / Venue / Authors
2025 — conf
Activities for Terminal-Cooperative MIMO Technology in XGMF 6G Radio Technology Project.
APWCS
Hiraku Okada, Hidekazu Murata, Yuta Ida, Yukitoshi Sanada, Kazuki Maruta, Osamu Muta, Yutaka Jitsumatsu, Eiji Okamoto, Issei Kanno, Kazuki Takezawa, Satoshi Suyama
2025 J jnl
Performance Improvement of Chaos-Coded Modulation Method with Non-Binary Error Correction Codes.
IEICE Trans. Commun.
Ryo Tozawa, Eiji Okamoto, Naoto Horiike, Tetsuya Yamamoto
2025 J jnl
Performance Improvement of Time-Division Duplex-Based 5G URLLC by Early Retransmission Control of HARQ.
IEEE Access
Yusaku Shiomitsu, Eiji Okamoto, Manabu Mikami, Hitoshi Yoshino
2023 J jnl
Demonstration of Chaos-Based Radio Encryption Modulation Scheme through Wired Transmission Experiments.
IEICE Trans. Commun.
Kenya Tomita, Mamoru Okumura, Eiji Okamoto
2023 J jnl
Foreword.
IEICE Trans. Commun.
Eiji Okamoto
2023 J jnl
High-Quality Secure Wireless Transmission Scheme Using Polar Codes and Radio-Wave Encrypted Modulation.
IEICE Trans. Commun.
Keisuke Asano, Mamoru Okumura, Takumi Abe, Eiji Okamoto, Tetsuya Yamamoto
2023 J jnl
High-Quality and Low-Complexity Polar-Coded Radio-Wave Encrypted Modulation Utilizing Multipurpose Frozen Bits.
IEICE Trans. Commun.
Keisuke Asano, Takumi Abe, Kenta Kato, Eiji Okamoto, Tetsuya Yamamoto
2023 B conf
Performance Comparison of Channel Coding Methods for Optical Satellite Data Relay System.
PIMRC
Eiji Okamoto, Yuma Yamashita, Yohei Satoh, Mitsuhiro Nakadai, Takamasa Itahashi, Shiro Yamakawa
2022 J jnl
Multi-Level Encrypted Transmission Scheme Using Hybrid Chaos and Linear Modulation.
IEICE Trans. Commun.
Kaga Tomoki, Mamoru Okumura, Eiji Okamoto, Tetsuya Yamamoto
2022 J jnl
Performance Improvement of Radio-Wave Encrypted MIMO Communications Using Average LLR Clipping.
IEICE Trans. Commun.
Mamoru Okumura, Keisuke Asano, Takumi Abe, Eiji Okamoto, Tetsuya Yamamoto
2021 J jnl
Artificially Time-Varying Differential MIMO for Achieving Practical Physical Layer Security.
IEEE Open J. Commun. Soc.
Naoki Ishikawa, Jehad M. Hamamreh, Eiji Okamoto, Chao Xu, Lixia Xiao
2021 — conf
Chaos-Based Interleave Division Multiple Access Scheme with Physical Layer Security.
CCNC
Mamoru Okumura, Kaga Tomoki, Eiji Okamoto, Tetsuya Yamamoto
2020 — conf
Low Complexity Decoding of Downlink Chaos NOMA Scheme with Physical Layer Security.
CCNC
Yoshihiro Masuda, Eiji Okamoto, Tetsuya Yamamoto
2020 — conf
Performance improvement of V2I uplink transmission on far vehicles using frequency scheduling-based cooperative V2V relay transmission.
CCNC
Hayato Ishikawa, Eiji Okamoto, Hiraku Okada, Satoshi Makido
2020 — conf
Poster: Performance analysis of early HARQ retransmission scheme in highway environments.
VNC
Yusaku Shiomitsu, Eiji Okamoto, Manabu Mikami, Hitoshi Yoshino
2019 — conf
A Chaos MIMO-Based Polar Concatenation Code for Secure Channel Coding.
ICOIN
Keita Ito, Yoshihiro Masuda, Eiji Okamoto
2019 — conf
An Uplink Non-Orthogonal Multiple Access Scheme Having Physical Layer Security Based on Chaos Modulation.
ICOIN
Yoshihiro Masuda, Eiji Okamoto, Keita Ito, Tetsuya Yamamoto
2019 — conf
Performance Analysis of Uplink V2I Cooperative Transmission Scheme in Practical Road Environments.
ICOIN
Hayato Ishikawa, Eiji Okamoto, Shouhei Okamoto, Hiraku Okada, Satoshi Makido
2019 — conf
Performance Analysis of a Terrestrial/UAV Integrated Mobile Communications System Using Code Division Multiplexing in Natural Disasters.
ICOIN
Ryo Hasegawa, Eiji Okamoto, Hiroyuki Tsuji, Amane Miura
2019 J jnl
Performance Comparison of Multi-User Shared Multiple Access Scheme in Uplink Channels.
IEICE Trans. Commun.
Eiji Okamoto, Manabu Mikami, Hitoshi Yoshino
2019 — conf
Poster: Effective frame configuration of 5G URLLC using open-loop HARQ for autonomous driving.
VNC
Yusaku Shiomitsu, Eiji Okamoto, Manabu Mikami, Hitoshi Yoshino
2018 — conf
A Study on Indoor Dimming Method Utilizing Outside Light for Power Saving.
APSIPA
Kengo Sasaki, Eiji Okamoto
2018 J jnl
A downlink non-orthogonal multiple access scheme having physical layer security.
EURASIP J. Wirel. Commun. Netw.
Naoto Horiike, Eiji Okamoto, Tetsuya Yamamoto
2018 J jnl
A k-out-of-n Ring Signature with Flexible Participation for Signers.
IACR Cryptol. ePrint Arch.
Takeshi Okamoto, Raylin Tso, Michitomo Yamaguchi, Eiji Okamoto
2018 — conf
Chaos MIMO-based downlink non-orthogonal multiple access scheme with physical layer security.
CCNC
Naoto Horiike, Hiroki Kitagawa, Eiji Okamoto, Tetsuya Yamamoto
2018 J jnl
Expressive Ciphertext-Policy Attribute-Based Encryption with Fast Decryption.
J. Internet Serv. Inf. Secur.
Hikaru Tsuchida, Takashi Nishide, Eiji Okamoto
2018 — conf
Large-Scale Grant-Free Sparse Chaos Code Multiple Access Scheme for 5G IoT.
VTC Fall
Eiji Okamoto, Naoto Horiike, Tetsuya Yamamoto
2017 J jnl
A low-area unified hardware architecture for the AES and the cryptographic hash function Grøstl.
J. Parallel Distributed Comput.
Nuray At, Jean-Luc Beuchat, Eiji Okamoto, Ismail San, Teppei Yamazaki
2017 J jnl
A privacy-enhanced access log management mechanism in SSO systems from nominative signatures.
Int. J. Appl. Cryptogr.
Sanami Nakagawa, Takashi Nishide, Eiji Okamoto, Keita Emura, Goichiro Hanaoka, Yusuke Sakai, Akihisa Kodate
2017 J jnl
Card-Based Protocols Using Regular Polygon Cards.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2017 — conf
One-time Programs with Cloud Storage and Its Application to Electronic Money.
APKC@AsiaCCS
Takuya Kitamura, Kazumasa Shinagawa, Takashi Nishide, Eiji Okamoto
2017 — conf
Performance Improvement of Low-Latency V2I Uplink Using Superposed Cooperative V2V Transmission.
VTC Fall
Eiji Okamoto, Hiraku Okada, Yoshinao Ishii, Satoshi Makido
2017 — conf
Performance improvement of chaos MIMO transmission scheme by LDPC code concatenation using symbol MAP detection and STBC.
ICOIN
Naoto Horiike, Eiji Okamoto, Tetsuya Yamamoto
2017 C conf
Performance improvement of multi-user chaos MIMO transmission scheme using dirty paper coding.
APCC
Naoto Horiike, Eiji Okamoto, Tetsuya Yamamoto
2017 — conf
Performance improvement of non-orthogonal multiple access scheme using code division multiplexing.
ICOIN
Hiroki Kitagawa, Eiji Okamoto
2017 J jnl
Performance improvement of non-orthogonal multiple access scheme using code division multiplexing.
Int. J. Distributed Sens. Networks
Hiroki Kitagawa, Eiji Okamoto
2017 — conf
Performance improvement of satellite/terrestrial integrated mobile communication system using unmanned aerial vehicle cooperative communications.
ICOIN
Tomohiro Akiyoshi, Eiji Okamoto, Hiroyuki Tsuji, Amane Miura
2017 J jnl
Provably Secure Gateway Threshold Password-Based Authenticated Key Exchange Secure against Undetectable On-Line Dictionary Attack.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Yukou Kobayashi, Naoto Yanai, Kazuki Yoneyama, Takashi Nishide, Goichiro Hanaoka, Kwangjo Kim, Eiji Okamoto
2017 — conf
Sparse chaos code multiple access scheme achieving larger capacity and physical layer security.
WPMC
Eiji Okamoto, Naoto Horiike, Tetsuya Yamamoto
2016 — conf
A Cooperative V2I Uplink Transmission Scheme Utilizing V2V Network Coding.
VTC Spring
Eiji Okamoto, Keisuke Kunitomo, Hidenori Akita, Takuma Kyo
2016 J jnl
Application of Non-Orthogonal Multiple Access Scheme for Satellite Downlink in Satellite/Terrestrial Integrated Mobile Communication System with Dual Satellites.
IEICE Trans. Commun.
Eiji Okamoto, Hiroyuki Tsuji
2016 C conf
Committed AND protocol using three cards with more handy shuffle.
ISITA
Kazumasa Shinagawa, Koji Nuida, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2016 J jnl
Fail-Stop Signatures for Multiple-Signers: Definitions, Constructions, and Their Extensions.
J. Inf. Process.
Nobuaki Kitajima, Naoto Yanai, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2016 C ed.
Information and Communications Security - 17th International Conference, ICICS 2015, Beijing, China, December 9-11, 2015, Revised Selected Papers
ICICS
Sihan Qing, Eiji Okamoto, Kwangjo Kim, Dongmei Liu
2016 J jnl
Radio Access Technologies for Fifth Generation Mobile Communications System: Review of Recent Research and Developments in Japan.
IEICE Trans. Commun.
Hidekazu Murata, Eiji Okamoto, Manabu Mikami, Akihiro Okazaki, Satoshi Suyama, Takamichi Inoue, Jun Mashino, Tetsuya Yamamoto, Makoto Taromaru
2016 Misc conf
Revocable Decentralized Multi-Authority Functional Encryption.
INDOCRYPT
Hikaru Tsuchida, Takashi Nishide, Eiji Okamoto, Kwangjo Kim
2016 J jnl
Secure Computation Protocols Using Polarizing Cards.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2016 — conf
Size-Hiding Computation for Multiple Parties.
ASIACRYPT (2)
Kazumasa Shinagawa, Koji Nuida, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2016 J jnl
Software Library for Ciphertext/Key-Policy Functional Encryption with Simple Usability.
J. Inf. Process.
Keisuke Hasegawa, Naoki Kanayama, Takashi Nishide, Eiji Okamoto
2015 J jnl
A Chaos MIMO Transmission Scheme Using Turbo Principle for Secure Channel-Coded Transmission.
IEICE Trans. Commun.
Eiji Okamoto, Yuma Inaba
2015 J jnl
An Accurate Indoor-Localization Scheme with NLOS Detection and Elimination Exploiting Stochastic Characteristics.
IEICE Trans. Commun.
Manato Horiba, Eiji Okamoto, Toshiko Shinohara, Katsuhiko Matsumura
2015 — conf
An Improved Proportional Fair Scheduling in Downlink Non-Orthogonal Multiple Access System.
VTC Fall
Eiji Okamoto
2015 — conf
An improved NLOS detection scheme using stochastic characteristics for indoor localization.
ICOIN
Manato Horiba, Eiji Okamoto, Toshiko Shinohara, Katsuhiko Matsumura
2015 — conf
Another Look at Aggregate Signatures: Their Capability and Security on Network Graphs.
INTRUST
Naoto Yanai, Masahiro Mambo, Kazuma Tanaka, Takashi Nishide, Eiji Okamoto
2015 — conf
Constructions of Fail-Stop Signatures for Multi-signer Setting.
AsiaJCIS
Nobuaki Kitajima, Naoto Yanai, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2015 C conf
Gateway Threshold Password-based Authenticated Key Exchange Secure against Undetectable On-line Dictionary Attack.
SECRYPT
Yukou Kobayashi, Naoto Yanai, Kazuki Yoneyama, Takashi Nishide, Goichiro Hanaoka, Kwangjo Kim, Eiji Okamoto
2015 J jnl
METRO: Measurement of End-to-End Route Trust.
J. Inf. Process.
Nasato Goto, Akira Kanaoka, Masayuki Okada, Eiji Okamoto
2015 C conf
Multi-party Computation with Small Shuffle Complexity Using Regular Polygon Cards.
ProvSec
Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2015 — conf
Privacy Preserved Rule-Based Risk Analysis through Secure Multi-party Computation.
AsiaJCIS
Yu Liu, Nasato Goto, Akira Kanaoka, Eiji Okamoto
2015 C conf
R&D activities for 5G in IEICE technical committee on radio communication systems.
APCC
Hidekazu Murata, Eiji Okamoto, Manabu Mikami, Akihiro Okazaki, Satoshi Suyama, Takamichi Inoue, Jun Mashino, Tetsuya Yamamoto, Makoto Taromaru
2015 Misc conf
Secure Multi-Party Computation Using Polarizing Cards.
IWSEC
Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt, Koji Nuida, Naoki Kanayama, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2015 — conf
Software Implementation of Ciphertext-Policy Functional Encryption with Simple Usability.
ICITCS
Keisuke Hasegawa, Naoki Kanayama, Takashi Nishide, Eiji Okamoto
2015 — conf
Software Implementation of a Pairing Function for Public Key Cryptosystems.
ICITCS
Yusuke Kanbara, Tadanori Teruya, Naoki Kanayama, Takashi Nishide, Eiji Okamoto
2014 J jnl
A CDH-based Ordered Multisignature Scheme Provably Secure without Random Oracles.
J. Inf. Process.
Naoto Yanai, Eikoh Chida, Masahiro Mambo, Eiji Okamoto
2014 C conf
A CDH-based ordered multisignature scheme in the standard model with better efficiency.
ISITA
Naoto Yanai, Masahiro Mambo, Eiji Okamoto
2014 B conf
A Privacy-Enhanced Access Log Management Mechanism in SSO Systems from Nominative Signatures.
TrustCom
Sanami Nakagawa, Keita Emura, Goichiro Hanaoka, Akihisa Kodate, Takashi Nishide, Eiji Okamoto, Yusuke Sakai
2014 C conf
A Short Fail-Stop Signature Scheme from Factoring.
ProvSec
Takashi Yamakawa, Nobuaki Kitajima, Takashi Nishide, Goichiro Hanaoka, Eiji Okamoto
2014 J jnl
Compact Hardware Implementations of ChaCha, BLAKE, Threefish, and Skein on FPGA.
IEEE Trans. Circuits Syst. I Regul. Pap.
Nuray At, Jean-Luc Beuchat, Eiji Okamoto, Ismail San, Teppei Yamazaki
2014 J jnl
Computer-aided decision-making with trust relations and trust domains (cryptographic applications).
J. Log. Comput.
Simon Kramer, Rajeev Goré, Eiji Okamoto
2014 J jnl
Computing fixed argument pairings with the elliptic net algorithm.
JSIAM Lett.
Yang Liu, Naoki Kanayama, Kazutaka Saito, Tadanori Teruya, Shigenori Uchiyama, Eiji Okamoto
2014 J jnl
Implementation of an Elliptic Curve Scalar Multiplication Method Using Division Polynomials.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Naoki Kanayama, Yang Liu, Eiji Okamoto, Kazutaka Saito, Tadanori Teruya, Shigenori Uchiyama
2014 — conf
METRO: Measurement of End-to-End Route Trust.
AsiaJCIS
Nasato Goto, Akira Kanaoka, Masayuki Okada, Eiji Okamoto
2014 — conf
Particle swarm optimization-based low-complexity three-dimensional UWB localization scheme.
ICUFN
Eiji Okamoto, Manato Horiba, Keita Nakashima, Toshiko Shinohara, Katsuhiko Matsumura
2014 J jnl
Transparent Probabilistic Packet Marking.
J. Inf. Process.
Masayuki Okada, Nasato Goto, Akira Kanaoka, Eiji Okamoto
2013 — conf
A Device for Transparent Probabilistic Packet Marking.
COMPSAC Workshops
Masayuki Okada, Nasato Goto, Akira Kanaoka, Eiji Okamoto
2013 — conf
A magnetic fluid seal for rotary blood pumps: Image and computational analyses of behaviors of magnetic fluids.
EMBC
Yoshinori Mitamura, Tetsuya Yano, Eiji Okamoto
2013 J jnl
An Efficient Channel Estimation Scheme Using Walsh Pilots in Bi-directional Wireless OFDM Relay Systems with Analog Network Coding.
IEICE Trans. Commun.
Yuta Koshimizu, Eiji Okamoto
2013 C conf
An Ordered Multisignature Scheme Under the CDH Assumption Without Random Oracles.
ISC
Naoto Yanai, Masahiro Mambo, Eiji Okamoto
2013 J jnl
Compact Hardware Implementations of ChaCha, BLAKE, Threefish, and Skein on FPGA.
IACR Cryptol. ePrint Arch.
Nuray At, Jean-Luc Beuchat, Eiji Okamoto, Ismail San, Teppei Yamazaki
2013 C conf
Constructing Symmetric Pairings over Supersingular Elliptic Curves with Embedding Degree Three.
Pairing
Tadanori Teruya, Kazutaka Saito, Naoki Kanayama, Yuto Kawahara, Tetsutaro Kobayashi, Eiji Okamoto
2013 — conf
Construction of a Multi-domain Functional Encryption System on Functional Information Infrastructure.
NBiS
Yusuke Niwa, Akira Kanaoka, Eiji Okamoto
2013 J jnl
Detection of Unexpected Services and Communication Paths in Networked Systems.
Inf. Media Technol.
Ichita Higurashi, Akira Kanaoka, Masahiko Kato, Eiji Okamoto
2013 J jnl
Detection of Unexpected Services and Communication Paths in Networked Systems.
J. Inf. Process.
Ichita Higurashi, Akira Kanaoka, Masahiko Kato, Eiji Okamoto
2013 — conf
Evaluation of titanium mesh electrode using for transcutaneous intrabody communication by tissue-electrode impedance.
EMBC
Eiji Okamoto, Sakiko Kikuchi, Yoshinori Mitamura
2013 B conf
Interference-aware weighting scheme for satellite/terrestrial integrated mobile communication system.
IWCMC
Akihisa Tanaka, Eiji Okamoto, Hiroyuki Tsuji, Yoshiyuki Fujino
2013 J jnl
Practical Internet voting system.
J. Netw. Comput. Appl.
Xun Yi, Eiji Okamoto
2012 J jnl
A Certificateless Ordered Sequential Aggregate Signature Scheme Secure against Super Adverssaries.
J. Wirel. Mob. Networks Ubiquitous Comput. Dependable Appl.
Naoto Yanai, Raylin Tso, Masahiro Mambo, Eiji Okamoto
2012 J jnl
A Chaos MIMO Transmission Scheme for Channel Coding and Physical-Layer Security.
IEICE Trans. Commun.
Eiji Okamoto
2012 J jnl
A Low-Area Unified Hardware Architecture for the AES and the Cryptographic Hash Function Grøstl.
IACR Cryptol. ePrint Arch.
Nuray At, Jean-Luc Beuchat, Eiji Okamoto, Ismail San, Teppei Yamazaki
2012 J jnl
A Markov-Based Satellite-to-Ground Optical Channel Model and Its Effective Coding Scheme.
IEICE Trans. Commun.
Yoshitoshi Yamashita, Eiji Okamoto, Yasunori Iwanami, Yozo Shoji, Morio Toyoshima, Yoshihisa Takayama
2012 J jnl
A Note on the Pairing Computation Using Normalized Miller Functions.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Naoki Ogura, Shigenori Uchiyama, Naoki Kanayama, Eiji Okamoto
2012 — conf
A secure cooperative relay transmission using chaos MIMO scheme.
ICUFN
Eiji Okamoto
2012 — conf
An Effective Channel Estimation Scheme for Bi-Directional Two-Timeslot OFDM Relay Transmission Using Analog Network Coding.
VTC Spring
Yuta Koshimizu, Eiji Okamoto
2012 J jnl
Approach to Pairing Inversions Without Solving Miller Inversion.
IEEE Trans. Inf. Theory
Naoki Kanayama, Eiji Okamoto
2012 J jnl
Chaos-cryptography based privacy preservation technique for video surveillance.
Multim. Syst.
Sk. Md. Mizanur Rahman, M. Anwar Hossain, Hussein T. Mouftah, Abdulmotaleb El Saddik, Eiji Okamoto
2012 — conf
Discovery of Unexpected Services and Communication Paths in Networked Systems.
SafeConfig
Ichita Higurashi, Akira Kanaoka, Masahiko Kato, Eiji Okamoto
2012 J jnl
Identity-Based Proxy Cryptosystems with Revocability and Hierarchical Confidentialities.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Lihua Wang, Licheng Wang, Masahiro Mambo, Eiji Okamoto
2012 C conf
Identity-based Password-Authenticated Key Exchange for Client/Server Model.
SECRYPT
Xun Yi, Raylin Tso, Eiji Okamoto
2012 J jnl
Performance Improvement of IMR-Based NLOS Detection in Indoor Ultra Wide-Band TOA Localization.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Kazutaka Fukuda, Eiji Okamoto
2012 — conf
Performance improvement of TOA localization using IMR-based NLOS detection in sensor networks.
ICOIN
Kazutaka Fukuda, Eiji Okamoto
2012 — conf
Tracing Advanced Persistent Threats in Networked Systems.
SafeConfig
Masahiko Kato, Takumi Matsunami, Akira Kanaoka, Hiroshi Koide, Eiji Okamoto
2011 — conf
32-bit as Number Based IP Traceback.
IMIS
Masayuki Okada, Yasuharu Katsuno, Akira Kanaoka, Eiji Okamoto
2011 — conf
A Chaos MIMO Transmission Scheme for Secure Communications on Physical Layer.
VTC Spring
Eiji Okamoto
2011 J jnl
A Low-Area Unified Hardware Architecture for the AES and the Cryptographic Hash Function ECHO.
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Eiji Okamoto, Teppei Yamazaki
2011 — conf
A comparative study on MIMO MLSE turbo equalizer on frequency selective channels.
WPMC
Yuya Takahashi, Yasunori Iwanami, Eiji Okamoto
2011 J jnl
A low-area unified hardware architecture for the AES and the cryptographic hash function ECHO.
J. Cryptogr. Eng.
Jean-Luc Beuchat, Eiji Okamoto, Teppei Yamazaki
2011 J jnl
An Effective Downlink Resource Allocation Scheme Based on MIMO-OFDMA-CDM in Cellular System.
IEICE Trans. Commun.
Yasuhiro Fuwa, Eiji Okamoto, Yasunori Iwanami
2011 — conf
BlueSnarf Revisited: OBEX FTP Service Directory Traversal.
Networking Workshops
Alberto Moreno, Eiji Okamoto
2011 — conf
Certificateless Ordered Sequential Aggregate Signature Scheme.
INCoS
Naoto Yanai, Raylin Tso, Masahiro Mambo, Eiji Okamoto
2011 J jnl
Computer-Aided Decision-Making for Formal Relations and Domains of Trust, Distrust, and Mistrust with Cryptographic Applications.
IACR Cryptol. ePrint Arch.
Simon Kramer, Rajeev Goré, Eiji Okamoto
2011 Misc conf
Cryptographic Pairings Based on Elliptic Nets.
IWSEC
Naoki Ogura, Naoki Kanayama, Shigenori Uchiyama, Eiji Okamoto
2011 C conf
Cryptographic security models for eHealth P2P database management systems network.
PST
Sk. Md. Mizanur Rahman, Md. Mehedi Masud, Carlisle Adams, Khalil El-Khatib, Hussein T. Mouftah, Eiji Okamoto
2011 J jnl
Fast Architectures for the \eta_T Pairing over Small-Characteristic Supersingular Elliptic Curves.
IEEE Trans. Computers
Jean-Luc Beuchat, Jérémie Detrey, Nicolas Estibals, Eiji Okamoto, Francisco Rodríguez-Henríquez
2011 — conf
Performance improvement of OFDMA cellular system using code division multiplexing in satellite/terrestrial integrated mobile communication system.
WPMC
Eiji Okamoto, Hiroyuki Tsuji, Yoshiyuki Fujino
2011 — conf
Practical Remote End-to-End Voting Scheme.
EGOVIS
Xun Yi, Eiji Okamoto
2011 J jnl
Scalar Multiplication on Pairing Friendly Elliptic Curves.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Naoki Kanayama, Tadanori Teruya, Eiji Okamoto
2011 C conf
Three-party Password-authenticated Key Exchange without Random Oracles.
SECRYPT
Xun Yi, Raylin Tso, Eiji Okamoto
2010 J jnl
A Compact FPGA Implementation of the SHA-3 Candidate ECHO.
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Eiji Okamoto, Teppei Yamazaki
2010 J jnl
A Comparative Study on Time Domain Sequential Equalizer with MLD and MLSE Equalizer on MIMO Frequency Selective Channels.
IEICE Trans. Commun.
Satoshi Nakanobu, Yasunori Iwanami, Eiji Okamoto
2010 A conf
A real-time privacy-sensitive data hiding approach based on chaos cryptography.
ICME
Sk. Md. Mizanur Rahman, M. Anwar Hossain, Hussein T. Mouftah, Abdulmotaleb El Saddik, Eiji Okamoto
2010 J jnl
An Approach to Perform Quantitative Information Security Risk Assessment in IT Landscapes.
Inf. Media Technol.
Anton Romanov, Hiroe Tsubaki, Eiji Okamoto
2010 J jnl
An Approach to Perform Quantitative Information Security Risk Assessment in IT Landscapes.
J. Inf. Process.
Anton Romanov, Hiroe Tsubaki, Eiji Okamoto
2010 B conf
An Efficient LDGM Coding Scheme for Optical Satellite-to-Ground Link Based on a New Channel Model.
GLOBECOM
Yoshitoshi Yamashita, Eiji Okamoto, Yasunori Iwanami, Yozo Shoji, Morio Toyoshima, Yoshihisa Takayama
2010 J jnl
An Evaluation on Throughput Performance for Type II Hybrid-ARQ Using Non-binary Rate-Compatible-Punctured LDPC Codes.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Takashi Kozawa, Yasunori Iwanami, Eiji Okamoto, Ryota Yamada, Naoki Okamoto
2010 J jnl
Compact Implementations of BLAKE-32 and BLAKE-64 on FPGA.
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Eiji Okamoto, Teppei Yamazaki
2010 — conf
Compact implementations of BLAKE-32 and BLAKE-64 on FPGA.
FPT
Jean-Luc Beuchat, Eiji Okamoto, Teppei Yamazaki
2010 J jnl
Cryptographic Pairings Based on Elliptic Nets.
IACR Cryptol. ePrint Arch.
Naoki Ogura, Naoki Kanayama, Shigenori Uchiyama, Eiji Okamoto
2010 C conf
Design and Analysis of "Flexible"
ATC
Raylin Tso, Xun Yi, Tadahiko Ito, Takeshi Okamoto, Eiji Okamoto
2010 J jnl
FPGA and ASIC implementations of the eta
Comput. Electr. Eng.
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
2010 J jnl
Forecasting of Information Security Related Incidents: Amount of Spam Messages as a Case Study.
IEICE Trans. Commun.
Anton Romanov, Eiji Okamoto
2010 J jnl
Formal definitions and complexity results for trust relations and trust domains fit for TTPs, the web of trust, PKIs, and ID-based cryptography.
SIGACT News
Simon Kramer, Rajeev Goré, Eiji Okamoto
2010 C conf
High-Speed Software Implementation of the Optimal Ate Pairing over Barreto-Naehrig Curves.
Pairing
Jean-Luc Beuchat, Jorge Enrique González-Díaz, Shigeo Mitsunari, Eiji Okamoto, Francisco Rodríguez-Henríquez, Tadanori Teruya
2010 J jnl
High-Speed Software Implementation of the Optimal Ate Pairing over Barreto-Naehrig Curves.
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Jorge Enrique González-Díaz, Shigeo Mitsunari, Eiji Okamoto, Francisco Rodríguez-Henríquez, Tadanori Teruya
2010 — conf
Identifying Potentially-Impacted Area by Vulnerabilities in Networked Systems Using CVSS.
SAINT
Toshiki Harada, Akira Kanaoka, Eiji Okamoto, Masahiko Kato
2010 C conf
Identity-Based Proxy Cryptosystems with Revocability and Hierarchical Confidentialities.
ICICS
Lihua Wang, Licheng Wang, Masahiro Mambo, Eiji Okamoto
2010 C conf
MIMO MFSK receivers using FDE and MLD on quasi-static frequency selective fading channels.
ISITA
Kenji Nakayama, Yasunori Iwanami, Eiji Okamoto
2010 Misc conf
New Constructions of Public-Key Encryption Schemes from Conjugacy Search Problems.
Inscrypt
Lihua Wang, Licheng Wang, Zhenfu Cao, Eiji Okamoto, Jun Shao
2010 C conf
New Identity-Based Proxy Re-encryption Schemes to Prevent Collusion Attacks.
Pairing
Lihua Wang, Licheng Wang, Masahiro Mambo, Eiji Okamoto
2010 B conf
On the Improvement of Maximum Likelihood Detection in Multiple Relay Systems.
WCNC
Azlan Abd Aziz, Yasunori Iwanami, Eiji Okamoto
2010 J jnl
Pair-wise Cryptographic Models for Secure Data Exchange in P2P Database Management Systems.
IACR Cryptol. ePrint Arch.
Sk. Md. Mizanur Rahman, Mehedi Masud, Carlisle Adams, Khalil El-Khatib, Hussein T. Mouftah, Eiji Okamoto
2010 J jnl
Strongly unforgeable ID-based signatures without random oracles.
Int. J. Appl. Cryptogr.
Chifumi Sato, Takeshi Okamoto, Eiji Okamoto
2009 — conf
A Framework for Building and Managing Secured ERP Landscape.
Security and Management
Anton Romanov, Eiji Okamoto
2009 B conf
A Pluggable Domain Management Approach for Building Practical Distributed Coalitions.
ARES
Yasuharu Katsuno, Yuji Watanabe, Michiharu Kudo, Eiji Okamoto
2009 C conf
A quantitative approach to assess information security related risks.
CRiSIS
Anton Romanov, Eiji Okamoto
2009 C conf
An Approach for Designing of Enterprise IT Landscapes to Perform Quantitave Information Security Risk Assessment.
SECRYPT
Anton Romanov, Eiji Okamoto
2009 — conf
Efficient Short Signatures from Pairing.
ITNG
Raylin Tso, Takeshi Okamoto, Eiji Okamoto
2009 J jnl
Fast Architectures for the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Jérémie Detrey, Nicolas Estibals, Eiji Okamoto, Francisco Rodríguez-Henríquez
2009 A conf
Hardware Accelerator for the Tate Pairing in Characteristic Three Based on Karatsuba-Ofman Multipliers.
CHES
Jean-Luc Beuchat, Jérémie Detrey, Nicolas Estibals, Eiji Okamoto, Francisco Rodríguez-Henríquez
2009 J jnl
Hardware Accelerator for the Tate Pairing in Characteristic Three Based on Karatsuba-Ofman Multipliers.
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Jérémie Detrey, Nicolas Estibals, Eiji Okamoto, Francisco Rodríguez-Henríquez
2009 Misc conf
ID-Based Group Password-Authenticated Key Exchange.
IWSEC
Xun Yi, Raylin Tso, Eiji Okamoto
2009 J jnl
New Cryptosystems From CSP-Based Self-Distributive Systems.
IACR Cryptol. ePrint Arch.
Licheng Wang, Lihua Wang, Zhenfu Cao, Eiji Okamoto, Jun Shao
2009 J jnl
Optimised Versions of the Ate and Twisted Ate Pairings.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Seiichi Matsuda, Naoki Kanayama, Florian Hess, Eiji Okamoto
2009 J jnl
Sender Authenticated Key Agreements without Random Oracles.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Chifumi Sato, Takeshi Okamoto, Eiji Okamoto
2009 C conf
Strongly Unforgeable ID-Based Signatures without Random Oracles.
ISPEC
Chifumi Sato, Takeshi Okamoto, Eiji Okamoto
2009 J jnl
Underlying Assumptions and Designated Verifier Signatures.
IACR Cryptol. ePrint Arch.
Chifumi Sato, Takeshi Okamoto, Eiji Okamoto
2008 C conf
1-out-of-.
ISPEC
Raylin Tso, Takeshi Okamoto, Eiji Okamoto
2008 J jnl
A Comparison Between Hardware Accelerators for the Modified Tate Pairing over F
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto, Francisco Rodríguez-Henríquez
2008 C conf
A Comparison between Hardware Accelerators for the Modified Tate Pairing over F
Pairing
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto, Francisco Rodríguez-Henríquez
2008 J jnl
A Pipelined Karatsuba-Ofman Multiplier over GF(3
IACR Cryptol. ePrint Arch.
Nidia Cortez-Duarte, Francisco Rodríguez-Henríquez, Jean-Luc Beuchat, Eiji Okamoto
2008 C conf
A Restricted Undeniable Designated Verifier Signature.
APSCC
Atsushi Koide, Raylin Tso, Takeshi Okamoto, Eiji Okamoto
2008 — conf
A Sanitizing Signature Scheme with Indexing.
EUC (2)
Atsushi Koide, Raylin Tso, Eiji Okamoto
2008 J jnl
Algorithms and Arithmetic Operators for Computing the etaT Pairing in Characteristic Three.
IEEE Trans. Computers
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto, Masaaki Shirase, Tsuyoshi Takagi
2008 C conf
An Efficient Countermeasure against Side Channel Attacks for Pairing Computation.
ISPEC
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2008 J jnl
Anonymous authentication and secure communication protocol for wireless mobile
Secur. Commun. Networks
Sk. Md. Mizanur Rahman, Nidal Nasser, Atsuo Inomata, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto
2008 — conf
Convertible Undeniable Partially Blind Signature from Bilinear Pairings.
EUC (2)
Atsushi Koide, Raylin Tso, Eiji Okamoto
2008 B conf
Efficient convertible Limited Verifier Signatures.
ISIT
Raylin Tso, Xun Yi, Takeshi Okamoto, Eiji Okamoto
2008 J jnl
FPGA and ASIC Implementations of the eta
IACR Cryptol. ePrint Arch.
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
2008 B conf
Secure Wireless Sensor Networks.
ARES
Xun Yi, Mike Faulkner, Eiji Okamoto
2008 J jnl
Some Efficient Algorithms for the Final Exponentiation of eta
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2008 J jnl
Strongly Unforgeable ID-based Signatures Without Random Oracles.
IACR Cryptol. ePrint Arch.
Chifumi Sato, Takeshi Okamoto, Eiji Okamoto
2007 B conf
A Comparison of Time Domain Equalizers by Block Processing in SISO Single Carrier Transmission.
PIMRC
Yusuke Takahashi, Yasunori Iwanami, Eiji Okamoto
2007 C conf
A Coprocessor for the Final Exponentiation of the
WAIFI
Jean-Luc Beuchat, Nicolas Brisebarre, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 J jnl
A Coprocessor for the Final Exponentiation of the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Nicolas Brisebarre, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 J jnl
A Refined Algorithm for the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 J jnl
Algorithms and Arithmetic Operators for Computing the eta
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto, Masaaki Shirase, Tsuyoshi Takagi
2007 C conf
An Algorithm for the nt Pairing Calculation in Characteristic Three and its Hardware Implementation.
IEEE Symposium on Computer Arithmetic
Jean-Luc Beuchat, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 J jnl
An ID-SP-M4M Scheme and Its Security Analysis.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Lihua Wang, Eiji Okamoto, Ying Miao, Takeshi Okamoto, Hiroshi Doi
2007 — conf
An Improved Signcryption Scheme and Its Variation.
ITNG
Raylin Tso, Takeshi Okamoto, Eiji Okamoto
2007 A conf
Arithmetic Operators for Pairing-Based Cryptography.
CHES
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto
2007 J jnl
Arithmetic Operators for Pairing-Based Cryptography.
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Nicolas Brisebarre, Jérémie Detrey, Eiji Okamoto
2007 Misc conf
ECDSA-Verifiable Signcryption Scheme with Signature Verification on the Signcrypted Message.
Inscrypt
Raylin Tso, Takeshi Okamoto, Eiji Okamoto
2007 B conf
Efficient ID-Based Digital Signatures with Message Recovery.
CANS
Raylin Tso, Chunxiang Gu, Takeshi Okamoto, Eiji Okamoto
2007 J jnl
ID-Based Group Password-Authenticated Key Exchange.
IACR Cryptol. ePrint Arch.
Xun Yi, Raylin Tso, Eiji Okamoto
2007 C conf
ID-Based Key Agreement for Dynamic Peer Groups in Mobile Computing Environments.
APSCC
Raylin Tso, Xun Yi, Eiji Okamoto
2007 — conf
Multiplication over F
ARC
Jean-Luc Beuchat, Takanori Miyoshi, Yoshihito Oyama, Eiji Okamoto
2007 C conf
Optimised Versions of the Ate and Twisted Ate Pairings.
IMACC
Seiichi Matsuda, Naoki Kanayama, Florian Hess, Eiji Okamoto
2007 J jnl
Optimised versions of the Ate and Twisted Ate Pairings.
IACR Cryptol. ePrint Arch.
Seiichi Matsuda, Naoki Kanayama, Florian Hess, Eiji Okamoto
2007 C ed.
Pairing-Based Cryptography - Pairing 2007, First International Conference, Tokyo, Japan, July 2-4, 2007, Proceedings
Pairing
Tsuyoshi Takagi, Tatsuaki Okamoto, Eiji Okamoto, Takeshi Okamoto
2007 C conf
Some Efficient Algorithms for the Final Exponentiation of
ISPEC
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2007 Misc conf
Universal
WISA
Masaaki Shirase, Yuto Kawahara, Tsuyoshi Takagi, Eiji Okamoto
2007 C conf
Verifier-Key-Flexible Universal Designated-Verifier Signatures.
IMACC
Raylin Tso, Juan Manuel González Nieto, Takeshi Okamoto, Colin Boyd, Eiji Okamoto
2006 Misc conf
A Novel Range Test.
ACISP
Kun Peng, Colin Boyd, Ed Dawson, Eiji Okamoto
2006 J jnl
A Share-Correctable Protocol for the Shamir Threshold Scheme and Its Application to Participant Enrollment.
Inf. Media Technol.
Raylin Tso, Ying Miao, Takeshi Okamoto, Eiji Okamoto
2006 J jnl
A Subject-Delegated Decryption Scheme with "Tightly" Limited Authority.
IACR Cryptol. ePrint Arch.
Lihua Wang, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto
2006 — conf
A trellis-coded chaotic modulation scheme.
ICC
Eiji Okamoto, Yasunori Iwanami
2006 J jnl
An Algorithm for the η
IACR Cryptol. ePrint Arch.
Jean-Luc Beuchat, Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2006 — conf
An Anonymous On-Demand Position-Based Routing in Mobile Ad Hoc Networks.
SAINT
Sk. Md. Mizanur Rahman, Masahiro Mambo, Atsuo Inomata, Eiji Okamoto
2006 J jnl
An Efficient ID-based Digital Signature with Message Recovery Based on Pairing.
IACR Cryptol. ePrint Arch.
Raylin Tso, Chunxiang Gu, Takeshi Okamoto, Eiji Okamoto
2006 J jnl
Anonymous On-Demand Position-based Routing in Mobile Ad-hoc Networks.
Inf. Media Technol.
Sk. Md. Mizanur Rahman, Atsuo Inomata, Masahiro Mambo, Eiji Okamoto
2006 — conf
Anonymous Secure Communication in Wireless Mobile Ad-Hoc Networks.
ICUCT
Sk. Md. Mizanur Rahman, Atsuo Inomata, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto
2006 J jnl
Anonymous Secure Communication in Wireless Mobile Ad-hoc Networks.
IACR Cryptol. ePrint Arch.
Sk. Md. Mizanur Rahman, Atsuo Inomata, Takeshi Okamoto, Masahiro Mambo, Eiji Okamoto
2006 J jnl
Authorization-Limited Transformation-Free Proxy Cryptosystems and Their Security Analyses.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Lihua Wang, Zhenfu Cao, Takeshi Okamoto, Ying Miao, Eiji Okamoto
2006 C conf
Efficient Implementation of Tate Pairing on a Mobile Phone Using Java.
CIS
Yuto Kawahara, Tsuyoshi Takagi, Eiji Okamoto
2006 J jnl
Efficient Implementation of Tate Pairing on a Mobile Phone using Java.
IACR Cryptol. ePrint Arch.
Yuto Kawahara, Tsuyoshi Takagi, Eiji Okamoto
2006 J jnl
How to Verify the Threshold
Inf. Media Technol.
Raylin Tso, Ying Miao, Takeshi Okamoto, Eiji Okamoto
2006 J jnl
Some Efficient Algorithms for the Final Exponentiation of η
IACR Cryptol. ePrint Arch.
Masaaki Shirase, Tsuyoshi Takagi, Eiji Okamoto
2005 B conf
A Novel Method to Maintain Privacy in Mobile Agent Applications.
CANS
Kun Peng, Ed Dawson, Juanma González Nieto, Eiji Okamoto, Javier López
2005 — conf
A Proposal of Short Proxy Signature using Pairing.
ITCC (1)
Takeshi Okamoto, Atsuo Inomata, Eiji Okamoto
2005 J jnl
A Share-Correctable Protocol for the Shamir Threshold Scheme and Its Application to Participant Enrollment.
IACR Cryptol. ePrint Arch.
Raylin Tso, Ying Miao, Takeshi Okamoto, Eiji Okamoto
2005 — conf
An id-based non-interactive tripartite key agreement protocol with K-resilience.
Communications and Computer Networks
Raylin Tso, Takeshi Okamoto, Tsuyoshi Takagi, Eiji Okamoto
2005 B conf
Cryptosystems Based on Elliptic Curve Pairing.
MDAI
Eiji Okamoto, Takeshi Okamoto
2005 — conf
ID-Based Series-Parallel Multisignature Schemes for Multi-Messages from Bilinear Maps.
WCC
Lihua Wang, Eiji Okamoto, Ying Miao, Takeshi Okamoto, Hiroshi Doi
2005 — conf
Insider Impersonation-MIM Attack to Tripartite Key Agreement Scheme and an Efficient Protocol for Multiple Keys.
CIS (2)
Lihua Wang, Takeshi Okamoto, Tsuyoshi Takagi, Eiji Okamoto
2005 J jnl
On Designatedly Verified (Non-interactive) Watermarking Schemes.
IACR Cryptol. ePrint Arch.
Malapati Raja Sekhar, Takeshi Okamoto, Eiji Okamoto
2005 B conf
One-Way and Two-Party Authenticated ID-Based Key Agreement Protocols Using Pairing.
MDAI
Takeshi Okamoto, Raylin Tso, Eiji Okamoto
2005 — conf
Practical Strong Designated Verifier Signature Schemes Based on Double Discrete Logarithms.
CISC
Raylin Tso, Takeshi Okamoto, Eiji Okamoto
2005 Misc ed.
Security and Privacy in the Age of Ubiquitous Computing, IFIP TC11 20th International Conference on Information Security (SEC 2005), May 30 - June 1, 2005, Chiba, Japan
SEC
Ryôichi Sasaki, Sihan Qing, Eiji Okamoto, Hiroshi Yoshiura
2005 J jnl
Specification and design of advanced authentication and authorization services.
Comput. Stand. Interfaces
Javier López, José A. Montenegro, José Luis Vivas, Eiji Okamoto, Ed Dawson
2004 — conf
Anonymous traceable disclosure scheme using pairing over elliptic curve.
InfoSecu
Tadahiko Ito, Takeshi Okamoto, Atsuo Inomata, Eiji Okamoto
2004 C ed.
Information and Communications Security, 6th International Conference, ICICS 2004, Malaga, Spain, October 27-29, 2004, Proceedings
ICICS
Javier López, Sihan Qing, Eiji Okamoto
2004 J jnl
The Dynamic-Typed Access Matrix Model and Decidability of the Safety Problem.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masakazu Soshi, Mamoru Maekawa, Eiji Okamoto
2004 — conf
Transformation-free proxy cryptosystems and their applications to electronic commerce.
InfoSecu
Lihua Wang, Zhenfu Cao, Eiji Okamoto, Ying Miao, Takeshi Okamoto
2003 C conf
A Fast Signature Scheme Based on New On-line Computation.
ISC
Takeshi Okamoto, Hirofumi Katsuno, Eiji Okamoto
2003 Misc conf
A New Algorithm for Searching a Consistent Set of Shares in a Threshold Scheme with Cheaters.
ICISC
Raylin Tso, Ying Miao, Eiji Okamoto
2003 — conf
Multivariate Statistical Analysis of Network Traffic for Intrusion Detection.
DEXA Workshops
Akira Kanaoka, Eiji Okamoto
2003 — conf
Privacy and Trusted Computing.
DEXA Workshops
Juan Manuel González Nieto, Ed Dawson, Eiji Okamoto
2003 J jnl
SVD-based design of fractional-delay 2-D digital filters exploiting specification symmetries.
IEEE Trans. Circuits Syst. II Express Briefs
Tian-Bo Deng, Eiji Okamoto
2003 J jnl
Virtual certificates and synthetic certificates: new paradigms for improving public key validation.
Comput. Commun.
Selwyn Russell, Ed Dawson, Eiji Okamoto, Javier López
2002 C conf
A New Design of Privilege Management Infrastructure for Organizations Using Outsourced PKI.
ISC
Ed Dawson, Javier López, José A. Montenegro, Eiji Okamoto
2002 J jnl
A Pilot-Symbol-Assisted Fading and Frequency-Offset Compensation Method Using FFT.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Eiji Okamoto, Huan-Bang Li, Tetsushi Ikegami
2002 J jnl
A block-coded modulation method for one-way multimode data transmission.
IEEE Trans. Commun.
Eiji Okamoto, Hiroyo Ogawa
2002 B conf
Cryptosystems based on polynomials over finite fields.
ITW
Eiji Okamoto
2002 Misc conf
Modelling Trust Structures for Public Key Infrastructures.
ACISP
Marie Henderson, Robert S. Coulter, Ed Dawson, Eiji Okamoto
2002 — conf
Simple and Secure Mobile Access under the Flexible Organization Management.
DEXA Workshops
Masahiro Mambo, Eiji Okamoto, Yasushi Sengoku, Takashi Tanaka
2001 J jnl
Editorial.
Int. J. Inf. Sec.
Dieter Gollmann, Catherine A. Meadows, Eiji Okamoto
2001 — conf
One-way multimode transmission using block-coded modulation for mobile communications.
VTC Fall
Eiji Okamoto, Hiroyo Ogawa
2000 J jnl
A Secure Agent-based Framework for Internet Trading in Mobile Computing Environments.
Distributed Parallel Databases
Xun Yi, Chee Kheong Siew, Xiao Feng Wang, Eiji Okamoto
2000 — conf
A Structured ElGamal-Type Multisignature Scheme.
Public Key Cryptography
Mike Burmester, Yvo Desmedt, Hiroshi Doi, Masahiro Mambo, Eiji Okamoto, Mitsuru Tada, Yuko Yoshifuji
2000 — ed.
Information Security, Third International Workshop, ISW 2000, Wollongong, NSW, Australia, December 20-21, 2000, Proceedings
ISW
Josef Pieprzyk, Eiji Okamoto, Jennifer Seberry
2000 Misc conf
On the Security of the RSA-Based Multisignature Scheme for Various Group Structures.
ACISP
Hiroshi Doi, Masahiro Mambo, Eiji Okamoto
2000 Misc ed.
Progress in Cryptology - INDOCRYPT 2000, First International Conference in Cryptology in India, Calcutta, India, December 10-13, 2000, Proceedings
INDOCRYPT
Bimal K. Roy, Eiji Okamoto
1999 B conf
A class-coded modulation method using orthogonal wavelets.
WCNC
Eiji Okamoto, Huan-Bang Li, Masato Tanaka, Hiromitsu Wakana
1999 A ed.
Advances in Cryptology - ASIACRYPT '99, International Conference on the Theory and Applications of Cryptology and Information Security, Singapore, November 14-18, 1999, Proceedings
ASIACRYPT
Kwok-Yan Lam, Eiji Okamoto, Chaoping Xing
1999 — conf
Agent-based copyright protection architecture for online electronic publishing.
Security and Watermarking of Multimedia Contents
Xun Yi, S. Kitazawa, Eiji Okamoto, Xiao Feng Wang, Kwok-Yan Lam, S. Tu
1999 — conf
An agent-based architecture for securing mobile IP.
Mobile Networks and Computing
Xun Yi, Shigeki Kitazawa, Hisao Sakazaki, Eiji Okamoto, D. Frank Hsu
1999 — conf
Extended Proxy Signatures for Smart Cards.
ISW
Takeshi Okamoto, Mitsuru Tada, Eiji Okamoto
1999 — conf
Improvement of Secure Access Control Agent for Distributed Files.
ICPP Workshops
Shigeki Kitazawa, Xun Yi, Eiji Okamoto, Masahiro Mambo
1999 — conf
Secure Agent-Mediated Auctionlike Negotiation Protocol for Internet Retail Commerce.
CIA
Xiao Feng Wang, Kwok-Yan Lam, Xun Yi, C. Q. Zhang, Eiji Okamoto
1999 C conf
User Identification System Based on Biometrics for Keystroke.
ICICS
Kazumasa Omote, Eiji Okamoto
1999 Misc conf
Verfiable Secret Sharing and Time Capsules.
ICISC
Josef Pieprzyk, Eiji Okamoto
1998 B conf
A Security Auction-Like Negotiation Protocol for Agent-Based Internet Trading.
SRDS
Xun Yi, Xiao Feng Wang, Kwok-Yan Lam, Eiji Okamoto, D. Frank Hsu
1998 Misc conf
A User Identification System Using Signature Written with Mouse.
ACISP
Agus Fanar Syukri, Eiji Okamoto, Masahiro Mambo
1998 J jnl
An optimized protocol for mobile network authentication and security.
ACM SIGMOBILE Mob. Comput. Commun. Rev.
Xun Yi, Eiji Okamoto, Kwok-Yan Lam
1998 — ed.
Information Security, First International Workshop, ISW '97, Tatsunokuchi, Japan, September 17-19, 1997, Proceedings
ISW
Eiji Okamoto, George I. Davida, Masahiro Mambo
1998 — conf
Secure Information Gathering Agent for Internet Trading.
DAI
Xiao Feng Wang, Xun Yi, Kwok-Yan Lam, Eiji Okamoto
1997 J jnl
A construction of codes with exponential error bounds on arbitrary discrete memoryless channels.
IEEE Trans. Inf. Theory
Tomohiko Uyematsu, Eiji Okamoto
1997 C conf
A tentative approach to constructing tamper-resistant software.
NSPW
Masahiro Mambo, Takanori Murayama, Eiji Okamoto
1997 C conf
Proposal of user identification scheme using mouse.
ICICS
Kenichi Hayashi, Eiji Okamoto, Masahiro Mambo
1997 Misc conf
Protection of Data and Delegated Keys in Digital Distribution.
ACISP
Masahiro Mambo, Eiji Okamoto, Kouichi Sakurai
1997 — conf
The Application of ID-Based Key Distribution Systems to an Elliptic Curve.
ISW
Hisao Sakazaki, Eiji Okamoto, Masahiro Mambo
1996 A conf
How to Utilize the Transformability of Digital Signatures for Solving the Oracle Problem.
ASIACRYPT
Masahiro Mambo, Kouichi Sakurai, Eiji Okamoto
1996 A* conf
Proxy Signatures for Delegating Signing Operation.
CCS
Masahiro Mambo, Keisuke Usuda, Eiji Okamoto
1996 B conf
Rayleigh fading compensation for QAM by using FFT.
PIMRC
Eiji Okamoto, Huan-Bang Li, Tetsushi Ikegami
1995 J jnl
Permutation Cipher Scheme Using Polynomials over a Field.
IEICE Trans. Inf. Syst.
Eiji Okamoto, Tomohiko Uyematsu, Masahiro Mambo
1994 A* conf
Ciphertext Only Attack for One-way Function of the MAP Using One Ciphertext.
CRYPTO
Yukiyasu Tsunoo, Eiji Okamoto, Tomohiko Uyematsu
1991 J jnl
Key distribution system for mail systems using ID-related information directory.
Comput. Secur.
Kazue Tanaka, Eiji Okamoto
1990 J jnl
Development of an implantable motor-driven assist pump system.
IEEE Trans. Biomed. Eng.
Yoyhinodi Mitamura, Eiji Okamoto, Atsushi Hirano, Tomohisa Mikami
1990 J jnl
Proposal for Cryptographic Key Distribution System Based on Identification Information.
Syst. Comput. Jpn.
Eiji Okamoto, Kazue Tanaka
1989 J jnl
Identity-based information security management system for personal computer networks.
IEEE J. Sel. Areas Commun.
Eiji Okamoto, Kazue Tanaka
1989 J jnl
Key distribution system based on identification information.
IEEE J. Sel. Areas Commun.
Eiji Okamoto, Kazue Tanaka
1988 A* conf
Substantial Number of Cryptographic Keys and Its Application to Encryption Designs.
EUROCRYPT
Eiji Okamoto
1987 A* conf
Key Distribution Systems Based on Identification Information.
CRYPTO
Eiji Okamoto
1985 A* conf
Lifetimes of Keys in Cryptographic Key Management Systems.
CRYPTO
Eiji Okamoto, K. Nakamura