Uniqueness of Partially Specified Multiple-Valued Kleenean Function. - Hiroaki Kikuchi; Noboru Takagi; Shohachiro Nakanishi; Masao Mukaidono (ISMVL, 1995)

A Characterization of Kleenean Functions. - Noboru Takagi; Hiroaki Kikuchi; Kyoichi Nakashima; Masao Mukaidono (ISMVL, 1995)

Structure Identification of Acquired Knowledge in Fuzzy Inference by Genetic Algorithms. - Shohachiro Nakanishi; Akihiro Ohtake; Ronald R. Yager; Shinobu Ohtani; Hiroaki Kikuchi (IEEE/Nagoya-University World Wisepersons Workshop, 1995)

Fuzzy system identification for composite operation and fuzzy relation by genetic algorithms. - Shinobu Ohtani; Hiroaki Kikuchi; Ronald R. Yager; Shohachiro Nakanishi (KES (1), 1997)

Electronic Auctions with Private Bids. - Michael Harkavy; J. Doug Tygar; Hiroaki Kikuchi (USENIX Workshop on Electronic Commerce, 1998)

Functional Completeness of Hierarchical Fuzzy Modeling. - Hiroaki Kikuchi; Akihiro Ohtake; Shohachiro Nakanishi (Inf. Sci., 1998)

Identification of incompletely specified multiple-valued Kleenean functions. - Noboru Takagi; Hiroaki Kikuchi; Kyoichi Nakashima; Masao Mukaidono (IEEE Trans. Syst. Man Cybern. Part A, 1998)

Performance Evaluation of Public-Key Certificate Revocation System with Balanced Hash Tree. - Hiroaki Kikuchi; Kensuke Abe; Shohachiro Nakanishi (ICPP Workshops, 1999)

Performance Evaluation of Certificate Revocation Using k-Valued Hash Tree. - Hiroaki Kikuchi; Kensuke Abe; Shohachiro Nakanishi (ISW, 1999)

Distributed auction servers resolving winner and winning bid without revealing privacy of bids. - Hiroaki Kikuchi; Shinji Hotta; Kensuke Abe; Shohachiro Nakanishi (ICPADS Workshops, 2000)

(M+1)st-Price Auction Protocol. - Hiroaki Kikuchi (Financial Cryptography, 2001)

Closures of Fuzzy Linguitic Trugh Value With Regards to the Extension Principle. - Hiroaki Kikuchi (FUZZ-IEEE, 2001)

Multi-Interval Truth Valued Logic. - Noboru Takagi; Hiroaki Kikuchi; Kyoichi Nakashima (FUZZ-IEEE, 2001)

Power Auction Protocol without Revealing Winning Bids. - Hiroaki Kikuchi (ICOIN, 2001)

Identification of Incompletely Specified Fuzzy Unate Logic Function. - Hiroaki Kikuchi (ISMVL, 2001)

de Morgan Bisemilattice of Fuzzy Truth Value. - Hiroaki Kikuchi; Noboru Takagi (ISMVL, 2002)

Oblivious Counter and Majority Protocol. - Hiroaki Kikuchi (ISC, 2002)

(M+1)st-Price Auction Protocol. - Hiroaki Kikuchi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

Hierarchical fuzzy modeling and jointly expandable functions. - Hiroaki Kikuchi; Noboru Takagi (Int. J. Intell. Syst., 2002)

Secure Instant Messaging Protocol Preserving Confidentiality against Administrator. - Hiroaki Kikuchi; Minako Tada; Shohachiro Nakanishi (AINA (2), 2004)

Rabin Tree and Its Application to Group Key Distribution. - Hiroaki Kikuchi (ATVA, 2004)

ModInt: Compact Modular Arithmatic Class Library Available on Cellular Phone and its Application to Secure Electronic Voting System. - Hiroaki Kikuchi; Junji Nakazato (SEC, 2004)

Applications of Fuzzy Logic Functions to Knowledge Discovery in Databases. - Noboru Takagi; Hiroaki Kikuchi; Masao Mukaidono (Trans. Rough Sets, 2004)

Efficient Key Management Based on the Subset Difference Method for Secure Group Communication. - Yuichi Nakamura 009; Hiroaki Kikuchi (AINA, 2005)

Privacy Preserving Web-Based Questionnaire. - Junji Nakazato; Kenji Fujimoto; Hiroaki Kikuchi (AINA, 2005)

Webpage clustering - automated classification into jointly classified groups. - Hiroaki Kikuchi (SMC, 2005)

Secure Asymmetric Watermark Detection Without Secret of Modified Pixels. - Mitsuo Okada; Hiroaki Kikuchi (WISA, 2005)

Dual RSA Accumulators and Its Application for Private Revocation Check. - Hiroaki Kikuchi (AINA (1), 2006)

How Many Malicious Scanners Are in the Internet? - Hiroaki Kikuchi; Masato Terada (WISA, 2006)

Efficient Multiparty Computation for Comparator Networks. - Koji Chida; Hiroaki Kikuchi; Gembu Morohashi; Keiichi Hirota (ARES, 2007)

ZeroBio - Evaluation and Development of Asymmetric Fingerprint Authentication System Using Oblivious Neural Network Evaluation Protocol. - Kei Nagai; Hiroaki Kikuchi; Wakaha Ogata; Masakatsu Nishigaki (ARES, 2007)

Online and Offline Presence Information Integrated with RFID and Instant Messaging Agent. - Hiroaki Kikuchi; Yuichi Nakamura 009 (AINA Workshops (1), 2007)

Estimation of Behavior of Scanners Based on ISDAS Distributed Sensors. - Hiroaki Kikuchi; Masato Terada; Naoya Fukuno; Norihisa Doi (OTM Conferences (2), 2007)

Evaluation and implement of fuzzy vault scheme using indexed minutiae. - Hiroaki Kikuchi; Yasunori Onuki; Kei Nagai (SMC, 2007)

Cryptanalysis of Modification to Self-Certified Group-Oriented Cryptosystem without A Combiner. - Willy Susilo; Hiroaki Kikuchi (Int. J. Netw. Secur., 2007)

Internet Observation with ISDAS: How Long Does a Worm Perform Scanning? - Tomohiro Kobori; Hiroaki Kikuchi; Masato Terada (ARES, 2008)

Automated Classification of Port-Scans from Distributed Sensors. - Hiroaki Kikuchi; Naoya Fukuno; Tomohiro Kobori; Masato Terada; Tangtisanon Pikulkaew (AINA, 2008)

Privacy-Preserving Similarity Evaluation and Application to Remote Biometrics Authentication. - Hiroaki Kikuchi; Kei Nagai; Wakaha Ogata; Masakatsu Nishigaki (MDAI, 2008)

Principal Components of Port-Address Matrices in Port-Scan Analysis. - Hiroaki Kikuchi; Naoya Fukuno; Masato Terada; Norihisa Doi (OTM Conferences (2), 2008)

Secure Multiparty Computation for Comparator Networks. - Gembu Morohashi; Koji Chida; Keiichi Hirota; Hiroaki Kikuchi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Multi-Bit Embedding in Asymmetric Digital Watermarking without Exposing Secret Information. - Mitsuo Okada; Hiroaki Kikuchi; Yasuo Okabe (IEICE Trans. Inf. Syst., 2008)

Automated Port-scan Classification with Decision Tree and Distributed Sensors. - Hiroaki Kikuchi; Naoya Fukuno; Tomohiro Kobori; Masato Terada; Tangtisanon Pikulkaew (Inf. Media Technol., 2008)

Estimation of Increase of Scanners Based on ISDAS Distributed Sensors. - Hiroaki Kikuchi; Masato Terada; Naoya Fukuno; Norihisa Doi (Inf. Media Technol., 2008)

Privacy-Preserving Collaborative Filtering Schemes. - Hiroaki Kikuchi; Hiroyasu Kizawa; Minako Tada (ARES, 2009)

A Study of User-Friendly Hash Comparison Schemes. - Hsu-Chun Hsiao; Yue-Hsun Lin; Ahren Studer; Cassandra Studer; King-Hang Wang; Hiroaki Kikuchi; Adrian Perrig; Hung-Min Sun; Bo-Yin Yang (ACSAC, 2009)

A Storage Efficient Redactable Signature in the Standard Model. - Ryo Nojima; Jin Tamura; Youki Kadobayashi; Hiroaki Kikuchi (ISC, 2009)

A Proposal of Efficient Remote Biometric Authentication Protocol. - Taiki Sakashita; Yoichi Shibata; Takumi Yamamoto; Kenta Takahashi; Wakaha Ogata; Hiroaki Kikuchi; Masakatsu Nishigaki (IWSEC, 2009)

Orthogonal Expansion of Port-scanning Packets. - Hiroaki Kikuchi; Tomohiro Kobori; Masato Terada (NBiS, 2009)

Multiparty Computation from El Gamal/Paillier Conversion. - Koji Chida; Hiroaki Kikuchi; Keiichi Hirota; Gembu Morohashi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

Heuristics for Detecting Botnet Coordinated Attacks. - Kazuya Kuwabara; Hiroaki Kikuchi; Masato Terada; Masashi Fujiwara (ARES, 2010)

Privacy-Preserving Collaborative Filtering Protocol Based on Similarity between Items. - Minako Tada; Hiroaki Kikuchi; Sutheera Puntheeranurak (AINA, 2010)

Mining Association Rules Consisting of Download Servers from Distributed Honeypot Observation. - Masayuki Ohrui; Hiroaki Kikuchi; Masato Terada (NBiS, 2010)

A discovery of sequential attack patterns of malware in botnets. - Nur Rohman Rosyid; Masayuki Ohrui; Hiroaki Kikuchi; Pitikhate Sooraksa; Masato Terada (SMC, 2010)

Foreword. - Hiroaki Kikuchi (IEICE Trans. Inf. Syst., 2010)

Principal Component Analysis of Port-scans for Reduction of Distributed Sensors. - Hiroaki Kikuchi; Masato Terada (Inf. Media Technol., 2010)

Perfect Privacy Preserving in Automated Trust Negotiation. - Hiroaki Kikuchi; Tangtisanon Pikulkaew (AINA, 2011)

Privacy-preserving Collaborative Filtering for the Cloud. - Anirban Basu 001; Jaideep Vaidya; Hiroaki Kikuchi; Theo Dimitrakos (CloudCom, 2011)

Distributed Collaborative Filtering Protocol Based on Quasi-homomorphic Similarity. - Hiroaki Kikuchi; Yoshiki Aoki; Masayuki Terada; Kazuhiko Ishii; Kimihiko Sekino (IMIS, 2011)

Apriori-PrefixSpan Hybrid Approach for Automated Detection of Botnet Coordinated Attacks. - Masayuki Ohrui; Hiroaki Kikuchi; Masato Terada; Nur Rohman Rosyid (NBiS, 2011)

Improving Efficiency in Privacy-Preserving Automated Trust Negotiation with Conjunctive Policies. - Tangtisanon Pikulkaew; Hiroaki Kikuchi (NBiS, 2011)

Scalable Privacy-Preserving Data Mining with Asynchronously Partitioned Datasets. - Hiroaki Kikuchi; Daisuke Kagawa; Anirban Basu; Kazuhiko Ishii; Masayuki Terada; Sadayuki Hongo (SEC, 2011)

Analysis on the Sequential Behavior of Malware Attacks. - Nur Rohman Rosyid; Masayuki Ohrui; Hiroaki Kikuchi; Pitikhate Sooraksa; Masato Terada (IEICE Trans. Inf. Syst., 2011)

Principal Component Analysis of Botnet Takeover. - Hiroaki Kikuchi; Shuji Matsuo; Masato Terada (Inf. Media Technol., 2011)

Efficient Privacy-Preserving Collaborative Filtering Based on the Weighted Slope One Predictor. - Anirban Basu 001; Jaideep Vaidya; Hiroaki Kikuchi (J. Internet Serv. Inf. Secur., 2011)

Geographical Visualization of Malware Download for Anomaly Detection. - N. Hiroguchi; Hiroaki Kikuchi; Khamphao Sisaat; Surin Kittitornkun (AsiaJCIS, 2012)

Synthesis of Secure Passwords. - Tomoki Sato; Hiroaki Kikuchi (AsiaJCIS, 2012)

Perturbation Based Privacy Preserving Slope One Predictors for Collaborative Filtering. - Anirban Basu 001; Jaideep Vaidya; Hiroaki Kikuchi (IFIPTM, 2012)

Privacy-Preserving Collaborative Filtering Using Randomized Response. - Hiroaki Kikuchi; Anna Mochizuki (IMIS, 2012)

Word Salad CAPTCHA - Application and Evaluation of Synthesized Sentences. - Yoshifumi Kamoshida; Hiroaki Kikuchi (NBiS, 2012)

Feasibility of a privacy preserving collaborative filtering scheme on the Google App Engine: a performance case study. - Anirban Basu 001; Jaideep Vaidya; Theo Dimitrakos; Hiroaki Kikuchi (SAC, 2012)

Accuracy of Privacy-Preserving Collaborative Filtering Based on Quasi-homomorphic Similarity. - Hiroaki Kikuchi; Yoshiki Aoki; Masayuki Terada; Kazuhiko Ishii; Kimihiko Sekino (UIC/ATC, 2012)

Privacy preserving collaborative filtering for SaaS enabling PaaS clouds. - Anirban Basu 001; Jaideep Vaidya; Hiroaki Kikuchi; Theo Dimitrakos; Srijith K. Nair (J. Cloud Comput., 2012)

Privacy-Preserving Collaborative Filtering on the Cloud and Practical Implementation Experiences. - Anirban Basu 001; Jaideep Vaidya; Hiroaki Kikuchi; Theo Dimitrakos (IEEE CLOUD, 2013)

Privacy-Preserving Distributed Decision Tree Learning with Boolean Class Attributes. - Hiroaki Kikuchi; Kouichi Itoh; Mebae Ushida; Hiroshi Tsuda; Yuji Yamaoka (AINA, 2013)

Bloom Filter Bootstrap: Privacy-Preserving Estimation of the Size of an Intersection. - Hiroaki Kikuchi; Jun Sakuma (DBSec, 2013)

Nondestructive evaluation of hardness using AC permeability and impedance analysis. - Hiroaki Kikuchi; Fumiya Ito; Shogo Daimon (ICST, 2013)

Privacy-Preserving Protocol for Epidemiology in Effect of Radiation. - Hiroaki Kikuchi; Tomoki Sato; Jun Sakuma (IMIS, 2013)

Location Privacy Vulnerable from Bluetooth Devices. - Hiroaki Kikuchi; Takeru Yokomizo (NBiS, 2013)

Time Zone Correlation Analysis of Malware/Bot Downloads. - Khamphao Sisaat; Hiroaki Kikuchi; Shunji Matsuo; Masato Terada; Masashi Fujiwara; Surin Kittitornkun (IEICE Trans. Commun., 2013)

Mining Botnet Coordinated Attacks using Apriori-PrefixSpan Hybrid Algorithm. - Masayuki Ohrui; Hiroaki Kikuchi; Nur Rohman Rosyid; Masato Terada (Inf. Media Technol., 2013)

Mining Botnet Coordinated Attacks using Apriori-PrefixSpan Hybrid Algorithm. - Masayuki Ohrui; Hiroaki Kikuchi; Nur Rohman Rosyid; Masato Terada (J. Inf. Process., 2013)

Privacy-Preserving Hypothesis Testing for the Analysis of Epidemiological Medical Data. - Hiroaki Kikuchi; Tomoki Sato; Jun Sakuma (AINA, 2014)

Secret Sharing Scheme with Efficient Keyword Search for Cloud Storage. - Hiroaki Kikuchi; Kouichi Itoh; Mebae Ushida; Yuji Yamaoka; Takanori Oikawa (AsiaJCIS, 2014)

An Accessible CAPTCHA System for People with Visual Disability - Generation of Human/Computer Distinguish Test with Documents on the Net. - Michitomo Yamaguchi; Toru Nakata; Takeshi Okamoto; Hiroaki Kikuchi (HCI (7), 2014)

On the Vulnerability of Ghost Domain Names. - Hiroaki Kikuchi; Tomohiro Arimizu (IMIS, 2014)

Privacy-Preserving Dose-Response Relationship Test. - Hiroaki Kikuchi; Tomoki Sato; Jun Sakuma (NBiS, 2014)

Vulnerability of the conventional accessible CAPTCHA used by the White House and an alternative approach for visually impaired people. - Michitomo Yamaguchi; Toru Nakata; Hajime Watanabe; Takeshi Okamoto; Hiroaki Kikuchi (SMC, 2014)

Cryptographic Operation Load-Balancing between Cryptographic Module and CPU. - Yohei Kaneko; Takamichi Saito; Hiroaki Kikuchi (AINA, 2015)

Scalability of Privacy-Preserving Linear Regression in Epidemiological Studies. - Hiroaki Kikuchi; Hideki Hashimoto; Hideo Yasunaga; Takamichi Saito (AINA, 2015)

Privacy-Preserving Epidemiological Analysis for a Distributed Database of Hospitals. - Hiroaki Kikuchi; Hideki Hashimoto; Hideo Yasunaga (AsiaJCIS, 2015)

Automated Detection of Drive-By Download Attack. - Hiroaki Kikuchi; Hiroaki Matsumoto; Hiroshi Ishii 002 (IMIS, 2015)

CAPTCHA System by Differentiating the Awkwardness of Objects. - Michitomo Yamaguchi; Takeshi Okamoto; Hiroaki Kikuchi (NBiS, 2015)

Zipf distribution model for quantifying risk of re-identification from trajectory data. - Hiroaki Kikuchi; Katsumi Takahashi (PST, 2015)

Privacy-Preserving Decision Tree Learning with Boolean Target Class. - Hiroaki Kikuchi; Kouichi Itoh; Mebae Ushida; Hiroshi Tsuda; Yuji Yamaoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

Ice and Fire: Quantifying the Risk of Re-identification and Utility in Data Anonymization. - Hiroaki Kikuchi; Takayasu Yamaguchi; Koki Hamada; Yuji Yamaoka; Hidenobu Oguri; Jun Sakuma (AINA, 2016)

Efficient Privacy-Preserving Logistic Regression with Iteratively Re-weighted Least Squares. - Hiroaki Kikuchi; Hideo Yasunaga; Hiroki Matsui; Chun-I Fan (AsiaJCIS, 2016)

A Study from the Data Anonymization Competition Pwscup 2015. - Hiroaki Kikuchi; Takayasu Yamaguchi; Koki Hamada; Yuji Yamaoka; Hidenobu Oguri; Jun Sakuma (DPM/QASA@ESORICS, 2016)

Primary Factors of Malicious Insider in E-learning Model. - Koichi Niihara; Hiroaki Kikuchi (HCI (26), 2016)

Flexible Authentication Protocol with Key Reconstruction in WBAN Environments. - Chun-I Fan; Jian-Sheng Wang; Jheng-Jia Huang; Yi-Fan Tseng; Wen-Shenq Juang; Hiroaki Kikuchi (ICITCS, 2016)

Interactive History Sniffing Attack with Amida Lottery. - Hiroaki Kikuchi; Kota Sasa; Yuta Shimizu (IMIS, 2016)

Lightweight Authentication Scheme with Dynamic Group Members in IoT Environments. - Jheng-Jia Huang; Wen-Shenq Juang; Chun-I Fan; Yi-Fan Tseng; Hiroaki Kikuchi (MobiQuitous (Adjunct Proceedings), 2016)

Proposal and Evaluation of Cyber Defense System Using Blacklist Refined Based on Authentication Results. - Hirofumi Nakakoji; Yasuhiro Fujii; Yoshiaki Isobe; Tomohiro Shigemoto; Tetsuro Kito; Naoki Hayashi; Nobutaka Kawaguchi; Naoki Shimotsuma; Hiroaki Kikuchi (NBiS, 2016)

Recursive-Rule Extraction Algorithm With J48graft And Applications To Generating Credit Scores. - Yoichi Hayashi; Yuki Tanaka; Tomohiro Takagi; Takamichi Saito; Hideaki Iiduka; Hiroaki Kikuchi; Guido Bologna; Sushmita Mitra (J. Artif. Intell. Soft Comput. Res., 2016)

SWIPASS: Image-Based User Authentication for Touch Screen Devices. - Masafumi Kosugi; Tsuyoshi Suzuki; Osamu Uchida; Hiroaki Kikuchi (J. Inf. Process., 2016)

Privacy-Preserving Multiple Linear Regression of Vertically Partitioned Real Medical Datasets. - Hiroaki Kikuchi; Chika Hamanaga; Hideo Yasunaga; Hiroki Matsui; Hideki Hashimoto (AINA, 2017)

Sharing or Non-sharing Credentials: A Study of What Motivates People to Be Malicious Insiders. - Koichi Niihara; Michihiro Yamada; Hiroaki Kikuchi (HCI (22), 2017)

Decision Tree Analysis on Environmental Factors of Insider Threats. - Michihiro Yamada; Koichi Niihara; Hiroaki Kikuchi (HCI (30), 2017)

Risk of Re-Identification Based on Euclidean Distance in Anonymized Data PWSCUP2015. - Satoshi Ito; Hiroaki Kikuchi (NBiS, 2017)

Audio-CAPTCHA with distinction between random phoneme sequences and words spoken by multi-speaker. - Michitomo Yamaguchi; Hiroaki Kikuchi (SMC, 2017)

How Much is Risk Increased by Sharing Credential in Group? - Hiroaki Kikuchi; Koichi Niihara; Michihiro Yamada (STM, 2017)

A Spatio-Temporal malware and country clustering algorithm: 2012 IIJ MITF case study. - Khamphao Sisaat; Surin Kittitornkun; Hiroaki Kikuchi; Chaxiong Yukonhiatou; Masato Terada; Hiroshi Ishii 002 (Int. J. Inf. Sec., 2017)

Multireceiver Predicate Encryption for Online Social Networks. - Chun-I Fan; Yi-Fan Tseng; Jheng-Jia Huang; Shih-Fen Chen; Hiroaki Kikuchi (IEEE Trans. Signal Inf. Process. over Networks, 2017)

Privacy Preserved Spectral Analysis Using IoT mHealth Biomedical Data for Stress Estimation. - Xuping Huang; Hiroaki Kikuchi; Chun-I Fan (AINA, 2018)

Risk of Re-identification from Payment Card Histories in Multiple Domains. - Satoshi Ito; Reo Harada; Hiroaki Kikuchi (AINA, 2018)

Development of White List Based Autonomous Evolution of Defense System for RAT Malware. - Tomohiro Shigemoto; Shota Fujii; Ichiro Kuriama; Tetsuro Kito; Hirofumi Nakakoji; Yasuhiro Fujii; Hiroaki Kikuchi (AsiaJCIS, 2018)

Secure Hierarchical Bitcoin Wallet Scheme Against Privilege Escalation Attacks. - Chun-I Fan; Yi-Fan Tseng; Hui-Po Su; Ruei-Hau Hsu; Hiroaki Kikuchi (DSC, 2018)

Risk of Bitcoin Addresses to be Identified from Features of Output Addresses. - Kodai Nagata; Hiroaki Kikuchi; Chun-I Fan (DSC, 2018)

Impact Assessment of Password Reset PRMitM Attack with Two-Factor Authentication. - Kota Sasa; Hiroaki Kikuchi (DSC, 2018)

Person Tracking Based on Gait Features from Depth Sensors. - Takafumi Mori; Hiroaki Kikuchi (NBiS, 2018)

Evaluation and Development of Onomatopoeia CAPTCHAs. - Michihiro Yamada; Riko Shigeno; Hiroaki Kikuchi; Maki Sakamoto (PST, 2018)

Study on Record Linkage of Anonymizied Data. - Hiroaki Kikuchi; Takayasu Yamaguchi; Koki Hamada; Yuji Yamaoka; Hidenobu Oguri; Jun Sakuma (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018)

Probably Secure Efficient Anonymous Credential Scheme. - Chien-Nan Wu; Chun-I Fan; Jheng-Jia Huang; Yi-Fan Tseng; Hiroaki Kikuchi (Int. J. Softw. Innov., 2018)

Privacy-Preserving Multiple Linear Regression of Vertically Partitioned Real Medical Datasets. - Hiroaki Kikuchi; Chika Hamanaga; Hideo Yasunaga; Hiroki Matsui; Hideki Hashimoto; Chun-I Fan (J. Inf. Process., 2018)

How to Handle Excessively Anonymized Datasets. - Ryo Nojima; Hidenobu Oguri; Hiroaki Kikuchi; Hiroshi Nakagawa; Koki Hamada; Takao Murakami; Yuji Yamaoka; Chiemi Watanabe (J. Inf. Process., 2018)

Privacy-Preserving Hypothesis Testing for Reduced Cancer Risk on Daily Physical Activity. - Hiroaki Kikuchi; Xuping Huang; Shigeta Ikuji; Manami Inoue (J. Medical Syst., 2018)

Anonymization methods and inference attacks: theory and practice (NII Shonan Meeting 2018-5). - Hiroaki Kikuchi; Josep Domingo-Ferrer; Sébastien Gambs (NII Shonan Meet. Rep., 2018)

Robust Person Identification based on DTW Distance of Multiple-Joint Gait Pattern. - Takafumi Mori; Hiroaki Kikuchi (ICISSP, 2019)

Mathematical Model to Estimate Loss by Cyber Incident in Japan. - Michihiro Yamada; Hiroaki Kikuchi; Naoki Matsuyama; Koji Inui (ICISSP, 2019)

Development of a Cyber Incident Information Crawler. - Kazuki Ikegami; Michihiro Yamada; Hiroaki Kikuchi; Koji Inui (IMIS, 2019)

Differentially Private Profiling of Anonymized Customer Purchase Records. - Hiroaki Kikuchi (DPM/CBT@ESORICS, 2020)

Modeling the Risk of Data Breach Incidents at the Firm Level. - Kazuki Ikegami; Hiroaki Kikuchi (IMIS, 2020)

Address Usage Estimation Based on Bitcoin Traffic Behavior. - Hiroki Matsumoto; Shusei Igaki; Hiroaki Kikuchi (NBiS, 2020)

Analysis on Malicious Residential Hosts Activities Exploited by Residential IP Proxy Services. - Akihiro Hanzawa; Hiroaki Kikuchi (WISA, 2020)

Special Issue on FinTech Security and Privacy. - Kuo-Hui Yeh; Robert H. Deng; Hiroaki Kikuchi (Future Gener. Comput. Syst., 2020)

De-identification for Transaction Data Secure against Re-identification Risk Based on Payment Records. - Satoshi Ito; Reo Harada; Hiroaki Kikuchi (J. Inf. Process., 2020)

Reidentification Risk from Pseudonymized Customer Payment History. - Hiroaki Kikuchi (AINA (2), 2021)

Vulnerability Exploiting SMS Push Notifications. - Rina Shibayama; Hiroaki Kikuchi (AsiaJCIS, 2021)

Vulnerability of Privacy Visor Used to Disrupt Unauthorized Face Recognition. - Hiroaki Kikuchi; Kazuki Eto; Kazushi Waki; Takafumi Mori (DSC, 2021)

Best Security Measures to Reduce Cyber-Incident and Data Breach Risks. - Hiroaki Kikuchi; Michihiro Yamada; Kazuki Ikegami; Koji Inui (DPM/CBT@ESORICS, 2021)

Proposal and Development of Anonymization Dictionary Using Public Information Disclosed by Anonymously Processed Information Handling Business Operators. - Masahiro Fujita; Yasuoki Iida; Mitsuhiro Hattori; Tadakazu Yamanaka; Nori Matsuda; Satoshi Ito; Hiroaki Kikuchi (IMIS, 2021)

Web Crawler for an Anonymously Processed Information Database. - Hiroaki Kikuchi; Atsuki Ono; Satoshi Ito; Masahiro Fujita; Tadakazu Yamanaka (IMIS, 2021)

More Accurate and Robust PRNU-Based Source Camera Identification with 3-Step 3-Class Approach. - Annjhih Hsiao; Takao Takenouchi; Hiroaki Kikuchi; Kazuo Sakiyama; Noriyuki Miura (IWDW, 2021)

Improvement of Estimate Distribution with Local Differential Privacy. - Hikaru Horigome; Hiroaki Kikuchi (MDAI, 2022)

A Vulnerability in Video Anonymization - Privacy Disclosure from Face-obfuscated video. - Hiroaki Kikuchi; Shun Miyoshi; Takafumi Mori; Andres Hernandez-Matamoros (PST, 2022)

Castell: Scalable Joint Probability Estimation of Multi-dimensional Data Randomized with Local Differential Privacy. - Hiroaki Kikuchi (CoRR, 2022)

Proposal of anonymization dictionary using disclosed statements by business operators. - Masahiro Fujita; Yasuoki Iida; Mitsuhiro Hattori; Tadakazu Yamanaka; Nori Matsuda; Satoshi Ito; Hiroaki Kikuchi (Internet Things, 2022)

Expectation-Maximization Estimation for Key-Value Data Randomized with Local Differential Privacy. - Hikaru Horigome; Hiroaki Kikuchi; Chia-Mu Yu (AINA (2), 2023)

Targeted Ads Analysis: What are The most Targeted Personas? - Hiroaki Kikuchi; Ayaka Aoyama (IEEE Big Data, 2023)

Local Differential Privacy Protocol for Making Key-Value Data Robust Against Poisoning Attacks. - Hikaru Horigome; Hiroaki Kikuchi; Chia-Mu Yu (MDAI, 2023)

Multiple Person Tracking Based on Gait Identification Using Kinect and OpenPose. - Ryotaro Toma; Terumi Yaguchi; Hiroaki Kikuchi (MSPN, 2023)

Failure of Privacy Policy for Session Replay Services Used for Monitor Your Keystroke. - Daichi Kajima; Hiroaki Kikuchi (NBiS, 2023)

New LDP Approach Using VAE. - Andres Hernandez-Matamoros; Hiroaki Kikuchi (NSS, 2023)

An Efficient Local Differential Privacy Scheme Using Bayesian Ridge Regression. - Andres Hernandez-Matamoros; Hiroaki Kikuchi (PST, 2023)

Privacy-Preserving Clustering for Multi-dimensional Data Randomization Under LDP. - Hiroaki Kikuchi (SEC, 2023)

Attacker models with a variety of background knowledge to de-identified data. - Satoshi Ito; Hiroaki Kikuchi; Hiroshi Nakagawa (J. Ambient Intell. Humaniz. Comput., 2023)

Designing a Location Trace Anonymization Contest. - Takao Murakami; Hiromi Arai; Koki Hamada; Takuma Hatano; Makoto Iguchi; Hiroaki Kikuchi; Atsushi Kuromasa; Hiroshi Nakagawa; Yuichi Nakamura 004; Kenshiro Nishiyama; Ryo Nojima; Hidenobu Oguri; et al. (Proc. Priv. Enhancing Technol., 2023)

Estimation of cost of k-anonymity in the number of dummy records. - Satoshi Ito; Hiroaki Kikuchi (J. Ambient Intell. Humaniz. Comput., 2023)

A Poisoning-Resilient LDP Schema Leveraging Oblivious Transfer with the Hadamard Transform. - Masahiro Shimizu; Hiroaki Kikuchi (MDAI, 2024)

Combinations of AI Models and XAI Metrics Vulnerable to Record Reconstruction Risk. - Ryotaro Toma; Hiroaki Kikuchi (PSD, 2024)

Cancer Risk Evaluation with Diabetes Mellitus by a Large Medical Claims Dataset. - Keita Fukuyama; Yukiko Mori; Tomohiro Kuroda; Hiroaki Kikuchi (SCIS/ISIS, 2024)

Secure Aggregation of Smartwatch Health Data with LDP. - Andres Hernandez-Matamoros; Hiroaki Kikuchi (SocialSec, 2024)

Meaningful Performance Analysis on Healthcare Data Under Local Differential Privacy. - Andres Hernandez-Matamoros; Hiroaki Kikuchi (SoMeT, 2024)

Honey-Proxy: Revealing Malicious Activities via Residential Proxies. - Hiroaki Kikuchi; Ryuichi Moriya; Takumi Kitahara; Hikari Fukuda (AINA (5), 2025)

No Anonymity in Metaverse: VR User Identification Based on DTW Distance of Head-and-Arms Motions. - Koki Miura; Hiroaki Kikuchi (AsiaJCIS, 2025)

Fine-Grained Data Poisoning Attack to Local Differential Privacy Protocols for Key-Value Data. - Terumi Yaguchi; Hiroaki Kikuchi (ESORICS (1), 2025)

Empirical Evaluation of Record Reconstruction Risk from Model Explanations with Differential Privacy. - Ryotaro Toma; Hiroaki Kikuchi (JSAI-isAI, 2025)

Differential Private Risk Factors Analysis of Polypharmacy. - Hiroaki Kikuchi; Andres Hernandez-Matamoros (MDAI, 2025)

Data Poisoning Attacks to Locally Differentially Private Range Query Protocols. - Ting-Wei Liao; Chih-Hsun Lin; Yu-Lin Tsai; Takao Murakami; Chia-Mu Yu; Jun Sakuma; Chun-Ying Huang; Hiroaki Kikuchi (CoRR, 2025)