Keiichi Iwamura

Publication Activity (10 Years)

Years Active: 1992-2023
Publications (10 Years): 67

Top Venues

GCCE

IIH-MSP

CCNC

IACR Cryptol. ePrint Arch.

Publications

Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
Communication-Efficient Secure Computation of Encrypted Inputs Using (k, n) Threshold Secret Sharing. IEEE Access 11 (2023)
Ahmad Kamal, Keiichi Iwamura
TTP-Aided Searchable Encryption of Documents Using Threshold Secret Sharing. ICISSP (2023)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
Privacy preserving multi-party multiplication of polynomials based on (k,n) threshold secret sharing. ICT Express 9 (5) (2023)
Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
TTP-Aided Secure Computation Using (k, n) Threshold Secret Sharing With a Single Computing Server. IEEE Access 10 (2022)
Sayoko Kakikura, Hyunho Kang, Keiichi Iwamura
Collusion Resistant Watermarking for Deep Learning Models Protection. ICACT (2022)
Yuma Shibasaki, Keiichi Iwamura, Koya Sato
A Communication-Efficient Secure Routing Protocol for IoT Networks. Sensors 22 (19) (2022)
Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal, Masaki Inamura
TTP-Aided Secure Computation using Secret Sharing With Only One Computing Server. AsiaCCS (2022)
Yuta Kakizaki, Koya Sato, Keiichi Iwamura
Performance of Federated Learning with Local Differential Privacy: Federation or Individualƒ. CCNC (2022)
Masakazu Okamoto, Koya Sato, Keiichi Iwamura
A Decentralized Machine Learning Scheme with Input Perturbation-Based Differential Privacy. CCNC (2022)
Nobuyuki Teraura, Isao Echizen, Keiichi Iwamura
Round Color 2D Symbol with Display Area and Secret Data Area for Business-to-Consumer Applications. GCCE (2022)
Yunosuke Noso, Keiichi Iwamura, Masaki Inamura
Proposal and Evaluation of a Method for Secure Division Sum Using the Secret Sharing Scheme by Rounding Off Real Numbers. CANDARW (2022)
Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
Simple Approach to Realizing Verifiable Secret Sharing for Secure Cloud System. IEEE Access 10 (2022)
Yoshi Michael Cho, Hiroyuki Imada, Naoto Kawamura, Hyunho Kang, Keiichi Iwamura
Print to Scan Resistant Watermarking based on Green Noise Diffusion Method using Machine Learning. ICACT (2022)
Hiroki Urakawa, Kitahiro Kaneda, Keiichi Iwamura
Improvement of Privacy Prevented Person Tracking System using Artificial Fiber Pattern. SIGMAP (2022)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
Improvement of Secure Multi-Party Multiplication of (k, n) Threshold Secret Sharing Using Only N = k Servers. ICISSP (2021)
Kazuaki Sugai, Kitahiro Kaneda, Keiichi Iwamura
High-speed Retrieval and Authenticity Judgment using Unclonable Printed Code. SIGMAP (2021)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
Improvement of Secure Multi-Party Multiplication of (k, n) Threshold Secret Sharing Using Only N=k Servers (Revised Version). IACR Cryptol. ePrint Arch. 2021 (2021)
Nozomi Nagashima, Masaki Inamura, Keiichi Iwamura
Implementation of Secondary Available Digital Content Protection Schemes using Identity-based Signatures. ICISSP (2021)
Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
Secure Computation by Secret Sharing using Input Encrypted with Random Number. SECRYPT (2021)
Yusuke Abe, Kosei Arisaka, Kitahiro Kaneda, Keiichi Iwamura
A Supply Chain Management System to Prevent Counterfeiting and Trace Different Transactions Instead of using PUF Device. ICE-B (2021)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
(Server-Aided) Two-Party Multiplication of Encrypted Shares Using (k, n) Threshold Secret Sharing With N ≥ k Servers. IEEE Access 9 (2021)
Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
Secure Computation by Secret Sharing Using Input Encrypted with Random Number (Full Paper). IACR Cryptol. ePrint Arch. 2021 (2021)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
Searchable encryption using secret sharing scheme that realizes direct search of encrypted documents and disjunctive search of multiple keywords. J. Inf. Secur. Appl. 59 (2021)
Shogo Ochiai, Keiichi Iwamura
New Approach to Dishonest-Majority Secure Multiparty Computation for Malicious Adversaries when n < 2k - 1. CANDAR (Workshops) (2020)
Nobuyuki Teraura, Isao Echizen, Keiichi Iwamura
Implementation of Digital Signature on QR Symbol by Area Division Using Rhombic Sub-cells. IMIS (2020)
Hiroki Ueda, Hyunho Kang, Keiichi Iwamura
Video Tampering Detection based on High-Frequency Features using Machine Learning. AICCC (2020)
Keiichi Iwamura
Foreword. IEICE Trans. Inf. Syst. (1) (2020)
Yuma Shibasaki, Koya Sato, Keiichi Iwamura
An AODV-Based Communication-Efficient Secure Routing Protocol for Large Scale Ad-Hoc Networks. CCNC (2020)
Wataru Fujii, Keiichi Iwamura, Masaki Inamura
Secure Comparison and Interval Test Protocols based on Three-party MPC. ICISSP (2020)
Sayoko Kakikura, Hyunho Kang, Keiichi Iwamura, Naoto Kawamura
Detecting Discrete Cosine Transform-Based Digital Watermarking Insertion Area Using Deep Learning. AICCC (2020)
Tomohiro Kobayashi, Keiichi Iwamura, Masaki Inamura
A Content Protection Method That Allows Commissioning of Editing Control Processing to a Third Party using a Proxy Signature. ICETE (3) (2020)
Masashi Yamane, Keiichi Iwamura
Secure and Efficient Outsourcing of Matrix Multiplication based on Secret Sharing Scheme using only One Server. CCNC (2020)
Nobuyuki Teraura, Isao Echizen, Keiichi Iwamura
A QR Symbol with ECDSA for Both Public and Secret Areas using Rhombic Sub-cells. APSIPA (2020)
Shogo Ochiai, Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
Secure Pairwise Key Sharing using Geometric Group Key Sharing Method. CCNC (2020)
Daiki Yorioka, Hyunho Kang, Keiichi Iwamura
Data Augmentation For Deep Learning Using Generative Adversarial Networks. GCCE (2020)
Takato Imai, Keiichi Iwamura
Secret Verification Method Suitable for the Asymmetric Secret Sharing Scheme. ICETE (1) (2019)
Keiichi Iwamura
Foreword. IEICE Trans. Inf. Syst. (1) (2019)
Koki Nishigami, Keiichi Iwamura
Efficient Geometric Group Key-sharing Scheme. ICETE (1) (2019)
Tomohiro Kobayashi, Keiichi Iwamura, Masaki Inamura
Content Protection Method to Control Editing by Billing. ICETE (1) (2019)
Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
Fast Secrecy Computation with Multiplication Under the Setting of $k\le N<2k-1$ using Secret Sharing Scheme. IACR Cryptol. ePrint Arch. 2019 (2019)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
Searchable Encryption Using Secret-Sharing Scheme for Multiple Keyword Search Using Conjunctive and Disjunctive Searching. DASC/PiCom/DataCom/CyberSciTech (2019)
Nobuyuki Teraura, Isao Echizen, Keiichi Iwamura
Implementation of a Digital Signature in Backward-Compatible QR Codes Using Subcell Division and Double Encoding. IMIS (2019)
Shogo Ochiai, Keiichi Iwamura, Ahmad Akmal Aminuddin Mohd Kamal
Secure Pairwise Key Sharing using Geometric Group Key Sharing Method (Full Paper). IACR Cryptol. ePrint Arch. 2019 (2019)
Naoya Noguchi, Kitahiro Kaneda, Keiichi Iwamura, Isao Echizen
New Approach for Embedding Secret Information into Fiber Materials. GCCE (2018)
Ryohei Niiuchi, Hyunho Kang, Keiichi Iwamura
Detection of Human Motion Gestures Using Machine Learning for Actual Emergency Situations. GCCE (2018)
Koki Nishigami, Keiichi Iwamura
Geometric Pairwise Key-Sharing Scheme. SecITC (2018)
Ken Aoi, Takeshi Shingu, Keiichi Iwamura
Security Evaluation on Secret Computation without Changing the Polynomial Degree. AINA Workshops (2017)
Jun Hamasaki, Keiichi Iwamura
Geometric group key-sharing scheme using euclidean distance. CCNC (2017)
Naoto Kaneko, Keiichi Iwamura
Improvement of Communication Traffic and Security of Proactive Secret Sharing Schemes and Combination Proactive Secret Sharing Scheme with an Asymmetric Secret Sharing Scheme. AINA Workshops (2017)
Naoto Yanai, Tomoya Iwasaki, Masaki Inamura, Keiichi Iwamura
Provably Secure Structured Signature Schemes with Tighter Reductions. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2017)
Masataka Ikeda, Hyunho Kang, Keiichi Iwamura
Direct challenge ring oscillator PUF (DC-ROPUF) with novel response selection. GCCE (2017)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
Conditionally Secure Multiparty Computation using Secret Sharing Scheme for n < 2k-1 (Short Paper). PST (2017)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura
Conditionally Secure Secrecy Computation using Secret Sharing Scheme for n<2k-1 (full paper). IACR Cryptol. ePrint Arch. 2017 (2017)
Ryo Sakuma, Hyunho Kang, Keiichi Iwamura, Isao Echizen
Digital Watermarking Scheme Based on Machine Learning for the IHC Evaluation Criteria. IIH-MSP (1) (2017)
Keiichi Iwamura, Masaki Kawamura, Minoru Kuribayashi, Motoi Iwata, Hyunho Kang, Seiichi Gohshi, Akira Nishimura
Information Hiding and Its Criteria for Evaluation. IEICE Trans. Inf. Syst. (1) (2017)
Daichi Tanaka, Keiichi Iwamura, Masaki Inamura, Kitahiro Kaneda
Deployment of Contents Protection Scheme using Digital Signature. ICE-B (2017)
Ahmad Akmal Aminuddin Mohd Kamal, Keiichi Iwamura, Hyunho Kang
Searchable encryption of image based on secret sharing scheme. APSIPA (2017)
Shinichi Goto, Keiichi Iwamura, Yuji Suga, Kitahiro Kaneda
Secret Sharing Scheme and Key Sharing Scheme Suitable for Clustered Sensor Networks. WINSYS (2016)
Natsuki Kokui, Hyunho Kang, Keiichi Iwamura, Isao Echizen
Best embedding direction for spread spectrum-based video watermarking. GCCE (2016)
Jun Hamasaki, Ryo Kaneko, Keiichi Iwamura
Geometric group key-sharing scheme. GCCE (2016)
Tatsuya Fujimoto, Keiichi Iwamura, Masaki Inamura
Content Protection Scheme to Realize Edit Control Including Diversion Control and Composition Control. ICE-B (2016)
Naoto Kaneko, Keiichi Iwamura
Proactive secret sharing scheme suitable for asymmetric secret sharing scheme. GCCE (2016)
YuFeng Yan, Hyunho Kang, Keiichi Iwamura, Isao Echizen
Image watermarking using the differences between two wavelet filters. GCCE (2016)
Yuichi Kusama, Hyunho Kang, Keiichi Iwamura, Isao Echizen
Privacy-protected video surveillance in crowded environments using robust watermarking. GCCE (2016)
Tatsuya Fujimoto, Keiichi Iwamura, Masaki Inamura
Content Protection Scheme to Realize Edit Control Including Diversion Control and Composition Control. ICETE (Selected Papers) (2016)
Tomoya Iwasaki, Naoto Yanai, Masaki Inamura, Keiichi Iwamura
Tightly-Secure Identity-Based Structured Aggregate Signature Scheme under the Computational Diffie-Hellman Assumption. AINA (2016)
Takeshi Shingu, Keiichi Iwamura, Kitahiro Kaneda
Secrecy Computation without Changing Polynomial Degree in Shamir's (K, N) Secret Sharing Scheme. DCNET (2016)
Toshiki Ito, Hyunho Kang, Keiichi Iwamura, Kitahiro Kaneda, Isao Echizen
Audio Watermarking Using Different Wavelet Filters. IWDW (2015)
Hirokazu Ishizuka, Kouichi Sakurai, Isao Echizen, Keiichi Iwamura
Evaluation of Matching Accuracy of Template Matching Using a Steganography Algorithm. CANDAR (2015)
Katsuma Koga, Masaki Inamura, Kitahiro Kaneda, Keiichi Iwamura
Content Control Scheme to Realize Right Succession and Edit Control. ICE-B (2015)
Yuichi Kusama, Hyunho Kang, Keiichi Iwamura
Mosaic-based Privacy-protection with Reversible Watermarking. SIGMAP (2015)
Hyunho Kang, Keiichi Iwamura
Anti-counterfeiting Using Irregularities of Magnetic Flux Density. CIT/IUCC/DASC/PICom (2015)
Hyunho Kang, Keiichi Iwamura
Information Hiding Method Using Best DCT and Wavelet Coefficients and ItsWatermark Competition. Entropy 17 (3) (2015)
Kent Kobayashi, Masaki Inamura, Kitahiro Kaneda, Keiichi Iwamura, Isao Echizen
Surveillance Camera System Balancing Privacy Protection and Effective Surveillance Image Use. ICE-B (2015)
Kitahiro Kaneda, Kenta Kawabata, Keiichi Iwamura, Isao Echizen
Mathematical Simulation Model and Its Evaluation for Artificial Fiber Patterns. IIH-MSP (2014)
Kitahiro Kaneda, Tomoki Inui, Keiichi Iwamura, Isao Echizen
Novel Proposal and Evaluation of Information Extraction Method from Artificial Fiber Pattern Using a Camera. IIH-MSP (2014)
Hirokazu Ishizuka, Isao Echizen, Keiichi Iwamura, Kouichi Sakurai
A Zero-Watermarking-Like Steganography and Potential Applications. IIH-MSP (2014)
Hyunho Kang, Keiichi Iwamura
Image Protection System with Steganography and Authentication. IIH-MSP (2014)
Hirokazu Ishizuka, Isao Echizen, Keiichi Iwamura, Kouichi Sakurai
Evaluation of a Zero-Watermarking-Type Steganography. IWDW (2014)
Kento Kobayashi, Keiichi Iwamura, Kitahiro Kaneda, Isao Echizen
Surveillance Camera System to Achieve Privacy Protection and Crime Prevention. IIH-MSP (2014)
Toshiki Ito, Ryo Sugimura, Hyunho Kang, Keiichi Iwamura, Kitahiro Kaneda, Isao Echizen
A New Approach to Reversible Watermarking. IIH-MSP (2014)
Kitahiro Kaneda, Hiroyasu Kitazawa, Keiichi Iwamura, Isao Echizen
A Study of Equipment Dependence of a Single-Dot Pattern Method for an Information-Hiding by Applying an Error-Correcting Code. IIH-MSP (2014)
Hyunho Kang, Keiichi Iwamura
Watermarking based on the difference of discrete cosine transform coefficients and an error-correcting code. IWIHC@ASIACCS (2014)
Masaki Inamura, Keiichi Iwamura
Content Approval Systems with Expansions of a New Pair-Connected-Structured Aggregate Signature Scheme. Int. J. E Entrepreneurship Innov. 4 (2) (2013)
Satoshi Takahashi, Keiichi Iwamura
Secret Sharing Scheme Suitable for Cloud Computing. AINA (2013)
Satoshi Takahashi, Shiro Kobayashi, Hyunho Kang, Keiichi Iwamura
Secret sharing scheme for cloud computing using IDs. GCCE (2013)
Yoshihide Nagai, Hyunho Kang, Keiichi Iwamura
A storage-saving secret sharing scheme suitable for sensor networks. GCCE (2013)
Hiroki Nishikawa, Yoshio Kakizaki, Keiichi Iwamura, Isao Echizen
Experiment of Geometrically Invariant and Unneeded Synchronism Watermarking Using Winding Number. AINA Workshops (2013)
Hiroki Nishikawa, Shingo Kuse, Keiichi Iwamura, Isao Echizen
A Method for Resisting Averaging Attacks on Digital Watermarks and Use of This Method with Digital Watermarks. NBiS (2012)
Yoshio Kakizaki, Maeda Kazunari, Keiichi Iwamura
Identifier Migration for Identity Continuance in Single Sign-On. J. Information Security 3 (4) (2012)
Hiroki Nishikawa, Yoshio Kakizaki, Keiichi Iwamura
Proposal of a watermarking scheme using winding number and unneeded synchronism. ISITA (2012)
Tooru Shigehiro, Hirohisa Yabe, Keiichi Iwamura
An improvement of insertion/deletion/substitution error correction capabilities of LDPC codes using slide decoding. ISITA (2012)
Kitahiro Kaneda, Yuta Kito, Keiichi Iwamura
Information Hiding Based on the Artificial Fiber Pattern with Improved Robustness against Foregound Objects. IIH-MSP (2011)
Hidetoshi Yukimaru, Yoshio Kakizaki, Keiichi Iwamura
Key Management Scheme Applicable to Various Topologies of Sensor Networks. ARES (2011)
Kasumi Toriumi, Yoshio Kakizaki, Keiichi Iwamura
Fast Implementation of the Advanced Encryption Standard Using Atmega1281. ARES (2011)
Kitahiro Kaneda, Yoshiaki Tachibana, Keiichi Iwamura
Information Hiding Based on a Single Dot Pattern Method with Improved Extraction and Robustness against Foreground Objects. IIH-MSP (2011)
Masaki Inamura, Keiichi Iwamura, Ryu Watanabe, Makoto Nishikawa, Toshiaki Tanaka
A New Tree-structure-specified Multisignature Scheme for a Document Circulation System. SECRYPT (2011)
Hiroki Ikeda, Keiichi Iwamura
Selective Encryption Scheme and Mode to Avoid Generating Marker Codes in JPEG2000 Code Streams with Block Cipher. AINA Workshops (2011)
Yoshio Kakizaki, Maeda Kazunari, Keiichi Iwamura
Identity Continuance in Single Sign-On with Authentication Server Failure. IMIS (2011)
Maeda Kazunari, Yoshio Kakizaki, Keiichi Iwamura
Identifier Migration in OpenID. IMIS (2011)

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Publication Activity (10 Years)

Top Topics

Top Venues

Keiichi Iwamura