Keiichi Iwamura

发表

Surveillance Camera System to Achieve Privacy Protection and Crime Prevention

Isao Echizen, Kento Kobayashi, Keiichi Iwamura, 2014, 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Performance Analysis for PUF Data Using Fuzzy Extractor

Yohei Hori, Toshihiro Katashita, Keiichi Iwamura, 2014 .

New Proposals for Data Hiding in Paper Media

Keiichi Iwamura, Kitahiro Kaneda, 2013 .

Efficient Geometric Group Key-sharing Scheme

Keiichi Iwamura, Koki Nishigami, 2019, ICETE.

Geometric Pairwise Key-Sharing Scheme

Keiichi Iwamura, Koki Nishigami, 2018, SecITC.

Secrecy Computation without Changing Polynomial Degree in Shamir's (K, N) Secret Sharing Scheme

Keiichi Iwamura, Kitahiro Kaneda, Takeshi Shingu, 2016, DCNET.

Collusion-Resistant Watermarking Using Modified Barni Method

Keiichi Iwamura, Hyunho Kang, 2014 .

Image watermarking using the differences between two wavelet filters

Isao Echizen, Keiichi Iwamura, Hyunho Kang, 2016, 2016 IEEE 5th Global Conference on Consumer Electronics.

Conditionally Secure Multiparty Computation using Secret Sharing Scheme for n < 2k-1 (Short Paper)

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, 2017, 2017 15th Annual Conference on Privacy, Security and Trust (PST).

Audio Watermarking Using Different Wavelet Filters

Isao Echizen, Keiichi Iwamura, Kitahiro Kaneda, 2015, IWDW.

Content Protection Scheme to Realize Edit Control Including Diversion Control and Composition Control

Masaki Inamura, Keiichi Iwamura, Tatsuya Fujimoto, 2016, ICE-B.

Scalable authentication for various representations of JPEG 2000 images

Keiichi Iwamura, Masafumi Koide, 2010, 2010 IEEE International Conference on Image Processing.

Provably Secure Structured Signature Schemes with Tighter Reductions

Naoto Yanai, Masaki Inamura, Keiichi Iwamura, 2017, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

PUF evaluation with post-processing and modified modeling attack

Akashi Satoh, Yohei Hori, Toshihiro Katashita, 2013 .

On the fairness in the case of opening attributes

Kouichi Sakurai, Keiichi Iwamura, Yuji Suga, 2000 .

A Content Protection Method That Allows Commissioning of Editing Control Processing to a Third Party using a Proxy Signature

Masaki Inamura, Keiichi Iwamura, Tomohiro Kobayashi, 2020, ICETE.

Identifier Migration for Identity Continuance in Single Sign-On

Yoshio Kakizaki, Keiichi Iwamura, Maeda Kazunari, 2012, J. Information Security.

A Study of Information Hiding Performance Using Simple Dot Pattern with Different Tile Sizes

Seiichiro Hangai, Keiichi Iwamura, Kitahiro Kaneda, 2008, 2008 International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Appareil de comptabilisation et système de distribution d'informations utilisant cet appareil

Keiichi Iwamura, 1997 .

A Zero-Watermarking-Like Steganography and Potential Applications

Kouichi Sakurai, Isao Echizen, Keiichi Iwamura, 2014, 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Improvement of privacy protection surveillance camera system and its applications

Keiichi Iwamura, Kitahiro Kaneda, Kota Hoshino, 2018, 2018 Fourth International Conference on Mobile and Secure Services (MobiSecServ).

Novel proposal and evaluation of information extraction from Artificial Fiber Pattern using a camera

Keiichi Iwamura, Kitahiro Kaneda, Isao Echizen, 2014 .

Method and device for encryption / decryption based on the Montgomery method using efficient modular multiplication

Keiichi Iwamura, Takahisa Yamamoto, 1994 .

An improvement of insertion/deletion/substitution error correction capabilities of LDPC codes using slide decoding

Keiichi Iwamura, Tooru Shigehiro, Hirohisa Yabe, 2012, 2012 International Symposium on Information Theory and its Applications.

A Method for Resisting Averaging Attacks on Digital Watermarks and Use of This Method with Digital Watermarks

Hiroki Nishikawa, Isao Echizen, Keiichi Iwamura, 2012, 2012 15th International Conference on Network-Based Information Systems.

Content-key Management and Authentication Mechanism for De-centralization in Content Distribution Service

Masaki Inamura, Keiichi Iwamura, 2013 .

Secret sharing scheme for cloud computing using IDs

Satoshi Takahashi, Keiichi Iwamura, Hyunho Kang, 2013, 2013 IEEE 2nd Global Conference on Consumer Electronics (GCCE).

Mathematical Simulation Model and Its Evaluation for Artificial Fiber Patterns

Isao Echizen, Keiichi Iwamura, Kitahiro Kaneda, 2014, 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Montgomery modular-multiplication method and systolic arrays suitable for modular exponentiation

Hideki Imai, Keiichi Iwamura, Tsutomu Matsumoto, 1994 .

Hierarchical-Structured Key Exchange Scheme for Large-Scale Mesh-Type Wireless Sensor Networks

Keiichi Iwamura, Kitahiro Kaneda, Ryo Kaneko, 2015 .

Direct challenge ring oscillator PUF (DC-ROPUF) with novel response selection

Keiichi Iwamura, Hyunho Kang, Masataka Ikeda, 2017, 2017 IEEE 6th Global Conference on Consumer Electronics (GCCE).

拡張墨塗り署名を用いたコンテンツ編集事前制御システム;拡張墨塗り署名を用いたコンテンツ編集事前制御システム;A Pre-Control System to Edit Contents with an Extended Sanitizable Signature

Akira Saito, Masaki Inamura, Keiichi Iwamura, 2013 .

Information Hiding Based on the Artificial Fiber Pattern with Improved Robustness against Foregound Objects

Keiichi Iwamura, Kitahiro Kaneda, Yuta Kito, 2011, 2011 Seventh International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Novel Proposal and Evaluation of Information Extraction Method from Artificial Fiber Pattern Using a Camera

Isao Echizen, Keiichi Iwamura, Kitahiro Kaneda, 2014, 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Digital Watermarking Scheme Based on Machine Learning for the IHC Evaluation Criteria

Keiichi Iwamura, Hyunho Kang, Isao Echizen, 2017, IIH-MSP.

Asymmetric secret sharing scheme suitable for cloud systems

Satoshi Takahashi, Keiichi Iwamura, Hyunho Kang, 2014, 2014 IEEE 11th Consumer Communications and Networking Conference (CCNC).

Tightly-Secure Identity-Based Structured Aggregate Signature Scheme under the Computational Diffie-Hellman Assumption

Naoto Yanai, Masaki Inamura, Keiichi Iwamura, 2016, 2016 IEEE 30th International Conference on Advanced Information Networking and Applications (AINA).

Message from CyberSciTech 2019 General Chairs, General Executive Chairs and Program Chairs

Henry Leung, Kouichi Sakurai, Katina Kralevska, 2019, 2019 IEEE Intl Conf on Dependable, Autonomic and Secure Computing, Intl Conf on Pervasive Intelligence and Computing, Intl Conf on Cloud and Big Data Computing, Intl Conf on Cyber Science and Technology Congress (DASC/PiCom/CBDCom/CyberSciTech).

Anti-counterfeiting Using Irregularities of Magnetic Flux Density

Keiichi Iwamura, Hyunho Kang, 2015, 2015 IEEE International Conference on Computer and Information Technology; Ubiquitous Computing and Communications; Dependable, Autonomic and Secure Computing; Pervasive Intelligence and Computing.

Experiment of Geometrically Invariant and Unneeded Synchronism Watermarking Using Winding Number

Hiroki Nishikawa, Yoshio Kakizaki, Isao Echizen, 2013, 2013 27th International Conference on Advanced Information Networking and Applications Workshops.

Selective Encryption Scheme and Mode to Avoid Generating Marker Codes in JPEG2000 Code Streams with Block Cipher

Keiichi Iwamura, Hiroki Ikeda, 2011, 2011 IEEE Workshops of International Conference on Advanced Information Networking and Applications.

A new tree-structure-specified multisignature scheme for a document circulation system

Masaki Inamura, Ryu Watanabe, Toshiaki Tanaka, 2011, Proceedings of the International Conference on Security and Cryptography.

A storage-saving secret sharing scheme suitable for sensor networks

Keiichi Iwamura, Hyunho Kang, Yoshihide Nagai, 2013, 2013 IEEE 2nd Global Conference on Consumer Electronics (GCCE).

Vera Hren key management, encryption system and distributed digital signature system with hierarchical structure

Takayuki Nagashima, Keiichi Iwamura, 1997 .

Identity Continuance in Single Sign-On with Authentication Server Failure

Yoshio Kakizaki, Keiichi Iwamura, Maeda Kazunari, 2011, 2011 Fifth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing.

Fast Implementation of the Advanced Encryption Standard Using Atmega1281

Yoshio Kakizaki, Keiichi Iwamura, Kasumi Toriumi, 2011, 2011 Sixth International Conference on Availability, Reliability and Security.

Geometric group key-sharing scheme

Keiichi Iwamura, Ryo Kaneko, Jun Hamasaki, 2016, 2016 IEEE 5th Global Conference on Consumer Electronics.

Secret Sharing Scheme Suitable for Cloud Computing

Satoshi Takahashi, Keiichi Iwamura, Satoshi Takahashi, 2013, 2013 IEEE 27th International Conference on Advanced Information Networking and Applications (AINA).

Key Management Scheme Applicable to Various Topologies of Sensor Networks

Yoshio Kakizaki, Keiichi Iwamura, Hidetoshi Yukimaru, 2011, 2011 Sixth International Conference on Availability, Reliability and Security.

Secrecy Multiplication Based on a (k, n)-Threshold Secret-Sharing Scheme Using Only k Servers

Keiichi Iwamura, Kitahiro Kaneda, Taihei Watanabe, 2015, CSA 2015.

Detection of Human Motion Gestures Using Machine Learning for Actual Emergency Situations

Keiichi Iwamura, Hyunho Kang, Ryohei Niiuchi, 2018, 2018 IEEE 7th Global Conference on Consumer Electronics (GCCE).

Information Hiding Based on a Single Dot Pattern Method with Improved Extraction and Robustness against Foreground Objects

Keiichi Iwamura, Kitahiro Kaneda, Yoshiaki Tachibana, 2011, 2011 Seventh International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Improvement and implementation of digital content protection scheme using identity based signature

Masaki Inamura, Keiichi Iwamura, Kitahiro Kaneda, 2018, 2018 Fourth International Conference on Mobile and Secure Services (MobiSecServ).

A Study of Equipment Dependence of a Single-Dot Pattern Method for an Information-Hiding by Applying an Error-Correcting Code

Isao Echizen, Keiichi Iwamura, Kitahiro Kaneda, 2014, 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Secret Sharing Scheme and Key Sharing Scheme Suitable for Clustered Sensor Networks

Shinichi Goto, Keiichi Iwamura, Kitahiro Kaneda, 2016, WINSYS.

A Consideration of the Reliability of Registration and Attribute Exchange

Yoshio Kakizaki, Keiichi Iwamura, Yoshio Kakizaki, 2010, 2010 International Conference on Availability, Reliability and Security.

Development of attack tool for the digital watermark.

Keiichi Iwamura, Takuma Mori, Kosuke Kamiya, 2007 .

Implementation of a Digital Signature in Backward-Compatible QR Codes Using Subcell Division and Double Encoding

Isao Echizen, Keiichi Iwamura, Nobuyuki Teraura, 2019, IMIS.

Foreword

Keiichi Iwamura, 2020, IEICE Trans. Inf. Syst..

Searchable Image Encryption using Secret Sharing Scheme

Keiichi Iwamura, KamalAhmadAkmalAminuddin Mohd, 2019 .

A STRUCTURED AGGREGATE SIGNATURE SCHEME WITH PAIRING-BASED CRYPTOGRAPHY

Masaki Inamura, Keiichi Iwamura, Keiichi Iwamura, 2013 .

Image Protection System with Steganography and Authentication

Keiichi Iwamura, Hyunho Kang, 2014, 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Watermarking based on the difference of discrete cosine transform coefficients and an error-correcting code

Keiichi Iwamura, Hyunho Kang, 2014, IWIHC '14.

Evaluation of a Zero-Watermarking-Type Steganography

Kouichi Sakurai, Isao Echizen, Keiichi Iwamura, 2014, IWDW.

A Design of Reed-Solomon Decoder with Systolic Array Structure

Hideki Imai, Yasunori Dohi, Keiichi Iwamura, 1995, IEEE Trans. Computers.

Secure Comparison and Interval Test Protocols based on Three-party MPC

Masaki Inamura, Keiichi Iwamura, Wataru Fujii, 2020, ICISSP.

Secure Pairwise Key Sharing using Geometric Group Key Sharing Method

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, Shogo Ochiai, 2020, 2020 IEEE 17th Annual Consumer Communications & Networking Conference (CCNC).

Content Protection Scheme to Realize Edit Control Including Diversion Control and Composition Control

Masaki Inamura, Keiichi Iwamura, Tatsuya Fujimoto, 2016, ICETE.

A New Fragile Watermarking Scheme and Its Security Evaluation

Hajime Kubota, Keiichi Iwamura, 2010, 2010 7th IEEE Consumer Communications and Networking Conference.

Searchable encryption of image based on secret sharing scheme

Keiichi Iwamura, Hyunho Kang, Ahmad Akmal Aminuddin Mohd Kamal, 2017, 2017 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC).

Fast Secrecy Computation with Multiplication Under the Setting of $k\le N<2k-1$ using Secret Sharing Scheme

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura, 2019, IACR Cryptol. ePrint Arch..

Proceedings of the 1st international workshop on Information hiding and its criteria for evaluation

Ki-Ryong Kwon, Keiichi Iwamura, Minoru Kuribayashi, 2014, ASIACCS 2014.

Mosaic-based privacy-protection with reversible watermarking

Keiichi Iwamura, Hyunho Kang, Yuichi Kusama, 2015, 2015 12th International Joint Conference on e-Business and Telecommunications (ICETE).

Content control scheme to realize right succession and edit control

Masaki Inamura, Keiichi Iwamura, Kitahiro Kaneda, 2015, 2015 12th International Joint Conference on e-Business and Telecommunications (ICETE).

Content Protection Method to Control Editing by Billing

Masaki Inamura, Keiichi Iwamura, Tomohiro Kobayashi, 2019, ICETE.

Secret Verification Method Suitable for the Asymmetric Secret Sharing Scheme

Keiichi Iwamura, Takato Imai, 2019, ICETE.

Implementation of Digital Signature on QR Symbol by Area Division Using Rhombic Sub-cells

Isao Echizen, Keiichi Iwamura, Nobuyuki Teraura, 2020, IMIS.

A method to reduce the circuit scale for systolic arrays and its application to reed-solomon codecs

Hideki Imai, Yasunori Dohi, Keiichi Iwamura, 1990 .

Development of Benchmark Tool for Digital Watermarking

Keiichi Iwamura, Takuma Mori, Kosuke Kamiya, 2008, 2008 International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Investigation of Information Embedding Method in Pattern by Artificial Fiber Pattern

Keiichi Iwamura, Kitahiro Kaneda, Isao Echizen, 2018 .

Extraction of Artificial Fiber Pattern from Video Using Deep Learning technique

Keiichi Iwamura, Kitahiro Kaneda, Tomo Noda, 2020 .

Data Augmentation For Deep Learning Using Generative Adversarial Networks

Keiichi Iwamura, Hyunho Kang, Daiki Yorioka, 2020, 2020 IEEE 9th Global Conference on Consumer Electronics (GCCE).

Deployment of Contents Protection Scheme using Digital Signature

Masaki Inamura, Keiichi Iwamura, Kitahiro Kaneda, 2017, ICE-B.

Content protection scheme that can control editing by accounting

Masaki Inamura, Keiichi Iwamura, Tomohiro Kobayashi, 2019 .

Secure and Efficient Outsourcing of Matrix Multiplication based on Secret Sharing Scheme using only One Server

Keiichi Iwamura, Masashi Yamane, Keiichi Iwamura, 2020, 2020 IEEE 17th Annual Consumer Communications & Networking Conference (CCNC).

Evaluation of Matching Accuracy of Template Matching Using a Steganography Algorithm

Kouichi Sakurai, Isao Echizen, Keiichi Iwamura, 2015, 2015 Third International Symposium on Computing and Networking (CANDAR).

New Approach for Embedding Secret Information into Fiber Materials

Isao Echizen, Keiichi Iwamura, Kitahiro Kaneda, 2018, 2018 IEEE 7th Global Conference on Consumer Electronics (GCCE).

A secure digital watermark system for secondary distribution

Hideki Imai, Kouichi Sakurai, Keiichi Iwamura, 2003 .

Surveillance camera system balancing privacy protection and effective surveillance image use

Masaki Inamura, Isao Echizen, Keiichi Iwamura, 2015, 2015 12th International Joint Conference on e-Business and Telecommunications (ICETE).

Proactive secret sharing scheme suitable for asymmetric secret sharing scheme

Keiichi Iwamura, Naoto Kaneko, Keiichi Iwamura, 2016, 2016 IEEE 5th Global Conference on Consumer Electronics.

An AODV-Based Communication-Efficient Secure Routing Protocol for Large Scale Ad-Hoc Networks

Keiichi Iwamura, Koya Sato, Yuma Shibasaki, 2020, 2020 IEEE 17th Annual Consumer Communications & Networking Conference (CCNC).

An Improvement of Robustness Against Physical Attacks and Equipment Independence in Information Hiding Based on the Artificial Fiber Pattern

Seiichiro Hangai, Yuki Fujii, Keiichi Iwamura, 2010, 2010 International Conference on Availability, Reliability and Security.

Special section on enriched multimedia -Application of multimedia technology and its security-

Keiichi Iwamura, 2020 .

Best embedding direction for spread spectrum-based video watermarking

Isao Echizen, Keiichi Iwamura, Hyunho Kang, 2016, 2016 IEEE 5th Global Conference on Consumer Electronics.

A code to correct synchronization errors

Hideki Imai, Keiichi Iwamura, 1993 .

Fast Secure Computation Method based on a Secret Sharing Scheme Even for n<2k-1 Which Can Deal with the Secret Zero

Keiichi Iwamura, Kyohei Tokita, 2018 .

Searchable Encryption Using Secret-Sharing Scheme for Multiple Keyword Search Using Conjunctive and Disjunctive Searching

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura, 2019, 2019 IEEE Intl Conf on Dependable, Autonomic and Secure Computing, Intl Conf on Pervasive Intelligence and Computing, Intl Conf on Cloud and Big Data Computing, Intl Conf on Cyber Science and Technology Congress (DASC/PiCom/CBDCom/CyberSciTech).

New Secure LEACH Protocol Using Hierarchy-Based Preshared Key Scheme

Shinichi Goto, Keiichi Iwamura, Hyunho Kang, 2015 .

Pseudo-random number generator, and communication method and setup using an encrypted text based on generated by this generator pseudo-random numbers

Keiichi Iwamura, Takahisa Yamamoto, 1995 .

Information Hiding and Its Criteria for Evaluation

Motoi Iwata, Akira Nishimura, Keiichi Iwamura, 2017, IEICE Trans. Inf. Syst..

Proposal of a watermarking scheme using winding number and unneeded synchronism

Hiroki Nishikawa, Yoshio Kakizaki, Keiichi Iwamura, 2012, 2012 International Symposium on Information Theory and its Applications.

A Method to Extend Euclid's Algorithm to N Dimension

Hideki Imai, Keiichi Iwamura, 1994 .

Cryptographie key generation from PUF data using efficient fuzzy extractors

Yohei Hori, Toshihiro Katashita, Keiichi Iwamura, 2014, 16th International Conference on Advanced Communication Technology.

High-Speed Implementation Methods for RSA Scheme

Hideki Imai, Tsutomu Matsumoto, Keiichi Iwamura, 1992, EUROCRYPT.

Geometric group key-sharing scheme using euclidean distance

Keiichi Iwamura, Jun Hamasaki, 2017, 2017 14th IEEE Annual Consumer Communications & Networking Conference (CCNC).

A LICENSE MANAGEMENT SYSTEM FOR CONTENT SEPARATE DELIVERY OVER P2P NETWORK

Masaki Inamura, Keiichi Iwamura, 2014 .

A method and network for transmitting encrypted text within a group of units using a key, of the group of units is inherent in a network having a plurality of units and a central station

Keiichi Iwamura, Takahisa Yamamoto, 1994 .

Foreword

Keiichi Iwamura, 2019, IEICE Trans. Inf. Syst..

A New Approach to Reversible Watermarking

Isao Echizen, Keiichi Iwamura, Kitahiro Kaneda, 2014, 2014 Tenth International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Improvement of Communication Traffic and Security of Proactive Secret Sharing Schemes and Combination Proactive Secret Sharing Scheme with an Asymmetric Secret Sharing Scheme

Keiichi Iwamura, Naoto Kaneko, Keiichi Iwamura, 2017, 2017 31st International Conference on Advanced Information Networking and Applications Workshops (WAINA).

Security Evaluation on Secret Computation without Changing the Polynomial Degree

Keiichi Iwamura, Takeshi Shingu, Ken Aoi, 2017, 2017 31st International Conference on Advanced Information Networking and Applications Workshops (WAINA).

Privacy-protected video surveillance in crowded environments using robust watermarking

Isao Echizen, Keiichi Iwamura, Hyunho Kang, 2016, 2016 IEEE 5th Global Conference on Consumer Electronics.

A Benchmark Tool for Digital Watermarking

Keiichi Iwamura, 2013 .

Appareil et procédé de traitement d'information

Keiichi Iwamura, Junichi Hayashi, 1999 .

Content Approval Systems with Expansions of a New Pair-Connected-Structured Aggregate Signature Scheme

Masaki Inamura, Keiichi Iwamura, Keiichi Iwamura, 2013, Int. J. E Entrepreneurship Innov..

Identifier Migration in OpenID

Yoshio Kakizaki, Keiichi Iwamura, Maeda Kazunari, 2011, 2011 Fifth International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing.

Conditionally Secure Secrecy Computation using Secret Sharing Scheme for n<2k-1 (full paper)

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura, 2017, IACR Cryptol. ePrint Arch..

Fast secure computation based on a secret sharing scheme for n < 2k − 1

Keiichi Iwamura, Kyohei Tokita, 2018, 2018 Fourth International Conference on Mobile and Secure Services (MobiSecServ).

Information Hiding Method Utilizing Low Visible Natural Fiber Pattern for Printed Documents

Seiichiro Hangai, Keiichi Iwamura, Kitahiro Kaneda, 2008, 2008 International Conference on Intelligent Information Hiding and Multimedia Signal Processing.

Searchable encryption using secret sharing scheme that realizes direct search of encrypted documents and disjunctive search of multiple keywords

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura, 2021, J. Inf. Secur. Appl..

A Supply Chain Management System to Prevent Counterfeiting and Trace Different Transactions Instead of using PUF Device

Keiichi Iwamura, Kitahiro Kaneda, Yusuke Abe, 2021, ICE-B.

Improvement of Secure Multi-Party Multiplication of (k, n) Threshold Secret Sharing Using Only N=k Servers (Revised Version)

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, 2021, IACR Cryptol. ePrint Arch..

Secure Computation by Secret Sharing Using Input Encrypted with Random Number (Full Paper)

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, 2021, IACR Cryptol. ePrint Arch..

Implementation of Secondary Available Digital Content Protection Schemes using Identity-based Signatures

Masaki Inamura, Keiichi Iwamura, Nozomi Nagashima, 2021, ICISSP.

High-speed Retrieval and Authenticity Judgment using Unclonable Printed Code

Keiichi Iwamura, Kitahiro Kaneda, Kazuaki Sugai, 2021, SIGMAP.

Information Hiding Method Using Best DCT and Wavelet Coefficients and ItsWatermark Competition

Keiichi Iwamura, Hyunho Kang, Keiichi Iwamura, 2015, Entropy.