OGUCHI Masato


Position

Professor

Birth

1967/12

Affiliation

Faculty of Core Research Natural Sciences Division

Graduate School of Humanities and Sciences, Education Organization, Doctral Program Advanced Sciences

Graduate School of Humanities and Sciences, Education Organization, Master's Program Advanced Sciences

Faculty of Science Information Sciences

Transdisciplinary Human-Centered Engineering

Faculty

Faculty of Transdisciplinary Engineering Human-Centered Engineering

Education Organization (Master's Program)

Computer Science

Education Organization (Doctoral Program)

Department of Computer Science

URL

写真a

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Research Keywords 【 display / non-display 】

  • Cloud Computing, Big Data, IoT Network, Communication Protocol, Cyber-Physical System, Security

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Research Pursuits 【 display / non-display 】

  • Recently, advanced network computing systems have been realized as various sorts of computers and resources are connected with each other, owing to prosperity of large-scale networks represented by Internet. In our laboratory, several innovative methods are proposed for such an environment in order to make the best use of computer resources comfortably and securely. They include IP-SAN Consolidated PC Cluster, High Performance Dependable SAN over Virtual Private Network (VPN), Authentication and Cryptography on Wireless LAN, and TCP Parameter Analysis and Control. Network protocols and concept models suitable for each environment are proposed.

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Educational Pursuits 【 display / non-display 】

  • Information Sciences
    Exercises in Basic Programming
    Computer Networks I
    Computer Networks II
    Advanced Computer Networks
    Advanced Distributed Computing

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Academic 【 display / non-display 】

  • Keio University, Faculty of Science and Engineering, Department of Electric Engineering, University, 卒業, Japan

  • University of Tokyo, Faculty of Engineering, Department of Electric Engineering, Graduate School(Master's Course), 修了, Japan

  • University of Tokyo, Faculty of Engineering, Department of Electronics Engineering, Graduate School(Doctor's Course), 修了, Japan

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Degree 【 display / non-display 】

  • Bachelor of Engineering, Keio University

  • M.S. in Electric Engineering, University of Tokyo

  • Ph.D. in Electronics Engineering, University of Tokyo

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Campus Career 【 display / non-display 】

  • Graduate School of Humanities and Sciences, Research Organization, the Core Section The Natural/Applied Sciences Division, Professor, 2012.04 - 2015.03

  • Faculty of Core Research Natural Sciences Division, Professor, 2015.04 -

  • Graduate School of Humanities and Sciences, Education Organization, Doctral Program Advanced Sciences, 2012.04 - 2015.03

  • Graduate School of Humanities and Sciences, Education Organization, Doctral Program Advanced Sciences, 2015.04 -

  • Graduate School of Humanities and Sciences, Education Organization, Master's Program Advanced Sciences, 2012.04 - 2015.03

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Research Field 【 display / non-display 】

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Books 【 display / non-display 】

  • コンピュータで広がる

    サイエンス社2020.12, 小口正人, Textbook, survey, introduction

  • コンピュータネットワーク入門

    サイエンス社2007.04, 小口正人, Textbook, survey, introduction

  • ワイヤレス・ブロードバンド教科書 - 高速IPワイヤレス編 -

    インプレスR&D2006.06, 小口正人（共著）, Textbook, survey, introduction

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Papers 【 display / non-display 】

  • Communication Volume Reduction of Homomorphic Ciphertext with Compressed Sensing

    Proc. the International Conference on Computing, Networking and Communications (ICNC2025), IEEE, , 2025.02, Koyuki Izumi, Marin Matsumoto, and Masato Oguchi, Original, Research paper (international conference proceedings), Coauthor

  • A Study of Effective Compression Methods for IoT Communication

    Proc. the 43rd IEEE International Conference on Consumer Electronics (ICCE2025), IEEE, , 2025.01, Chisa Ito, Atsuko Takefusa, Hidemoto Nakada, and Masato Oguchi, Original, Research paper (international conference proceedings), Coauthor

  • 効率的な暗号処理に向けたFHE暗号方式・ライブラリの比較

    情報処理学会論文誌, , 2024.12, 辻 有紗，圓戸 辰郎，小口 正人, Original, Research paper (scientific journal), Coauthor

  • Measuring Local and Shuffled Privacy of Gradient Randomized Response

    Journal of Information Processing, , 2024.11, Marin Matsumoto, Tsubasa Takahashi, Seng Pei Liew, and Masato Oguchi:, Original, Research paper (scientific journal), Coauthor

  • Privacy-protective Distributed Machine Learning between Rich Devices and Edge Servers

    Journal of Information Processing, , 2024.11, Saki Takano, Akihiro Nakao, Saneyasu Yamaguchi, and Masato Oguchi, Original, Research paper (scientific journal), Coauthor

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Presentations 【 display / non-display 】

  • Communication Volume Reduction of Homomorphic Ciphertext with Compressed Sensing

    Koyuki Izumi, Marin Matsumoto, and Masato Oguchi, International, 2025.02, , International Conference on Computing, Networking and Communications (ICNC2025), Honolulu, USA, IEEE, Not Invited, Coauthor

  • A Study of Effective Compression Methods for IoT Communication

    Chisa Ito, Atsuko Takefusa, Hidemoto Nakada, and Masato Oguchi, International, 2025.01, , 43rd IEEE International Conference on Consumer Electronics (ICCE2025), Las Vegas, USA, IEEE, Not Invited, Coauthor

  • IPEQ: Querying Multi-Attribute Records with Inner Product Encryption

    Marin Matsumoto, Tsubasa Takahashi, and Masato Oguchi, International, 2024.06, , 39th International Conference on ICT Systems Security and Privacy Protection (IFIP SEC 2024), Edinburgh, UK, IFIP, Not Invited, Coauthor

  • Comparison of FHE Schemes and Libraries for Efficient Cryptographic Processing

    Arisa Tsuji and Masato Oguchi, International, 2024.02, , International Conference on Computing, Networking and Communications (ICNC2024), Big Island, Hawaii, USA, IEEE, Not Invited, Coauthor

  • Event Retrieval from Mobile Devices with Location Anonymization Satisfying Geo-Indistinguishability Using Real Population Data

    Kyoka Ishigami, Miki Enoki, and Masato Oguchi, International, 2024.01, , 42nd IEEE International Conference on Consumer Electronics (ICCE2024), Las Vegas, USA, IEEE, Not Invited, Coauthor

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Prize for Research Activities 【 display / non-display 】

  • International Conference on Big Data Intelligence and Computing(DataCom2022)，Best Paper Award

    IEEE, Saki Takano, Akihiro Nakao, Saneyasu Yamaguchi, and Masato Oguchi, Privacy-Protective Distributed Machine Learning between Rich Devices and Edge Servers using Confidence Level, 2022.12, International, Award from international society, conference, symposium, etc.

  • International Conference on Emerging Technologies for Communications (ICETC2021)，Best Paper Award

    IEICE, Saki Takano, Akihiro Nakao, Saneyasu Yamaguchi, and Masato Oguchi, Privacy-Protective Distributed Machine Learning Using Rich Clients, 2021.12, International

  • DICOMO2021優秀論文賞

    情報処理学会, 礒井 葉那，竹房 あつ子，中田 秀基，小口 正人, 動作認識のための合成データ活用に向けたドメイン適応手法の比較, 2021.07, Domestic

  • DICOMO2020優秀論文賞

    情報処理学会, 松本 茉倫，小口 正人, 完全準同型暗号と共通鍵暗号を組み合わせたIoTデバイスにおけるセンサデータ暗号化の高速化, 2020.06, Domestic

  • DICOMO2013優秀論文賞

    情報処理学会, 長谷川友香，小口正人, 「周辺ユーザ探索による緊急時判断機能を備えた家族間情報共有システム」, 2013.07, Domestic

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Receipt of outside funds (Education, Research, Contribution to Society and industry-academia[government] collaboration) 【 display / non-display 】

  • Grant-in-Aid for Scientific Research(B)2022, 700,000yen

  • Grant-in-Aid for Scientific Research(B)2021, 600,000yen

  • Grant-in-Aid for Scientific Research(B)2020, 600,000yen

  • Grant-in-Aid for Scientific Research(B)2019, 700,000yen

  • Grant-in-Aid for Scientific Research(C)2018, 400,000yen

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Contributions as an officer, member, etc., of an academic society 【 display / non-display 】

  • 2023.06 - now，the Chairperson, International

  • 2021.01 - 2024.12，the Chairperson, International

  • 2020.06 - 2022.05，the Vice-Chairperson, Domestic

  • 2017.06 - now，Trustee, Domestic

  • 2017.06 - 2019.06，the Chairperson, Domestic

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