Updated on 2024/09/30

Information

 

写真a

 
NUIDA KOJI
 
Organization
Institute of Mathematics for Industry Laboratory of Mathematical Design for Advanced Cryptography Professor
School of Sciences Department of Mathematics(Joint Appointment)
Graduate School of Mathematics Department of Mathematics(Joint Appointment)
Joint Graduate School of Mathematics for Innovation (Joint Appointment)
School of Engineering Department of Electrical Engineering and Computer Science(Joint Appointment)
School of Engineering (Joint Appointment)
Title
Professor
Contact information
メールアドレス
Profile
For research on cryptography, I am mainly working on secure multiparty computation, mathematical security evaluation of cryptographic technology such as post-quantum cryptography, and fundamental theory such as the usage of pseudorandom generators. For research on mathematics, I am mainly working on combinatorial group theory such as the theory of Coxeter groups, and combinatorics/discrete mathematics. I also worked as PC members of international conferences including ACM ASIACCS 2021.

Degree

  • Ph.D. (Mathematical Sciences) ( 2006.3   The University of Tokyo )

Research History

  • Kyushu University Institute of Mathematics for Industry Laboratory of Mathematical Design for Advanced Cryptography  Professor

    2021.4 - Present

  • 2006年4月~2018年3月:産業技術総合研究所

    2006年4月~2018年3月:産業技術総合研究所

  • 2018年4月~2021年3月:東京大学 大学院情報理工学系研究科 数理情報学専攻

Research Interests・Research Keywords

  • Research theme:Mathematical Cryptography, Secure Multiparty Computation, Fundamental of Cryptography, Combinatorial Group Theory

    Keyword:Mathematical Cryptography, Secure Multiparty Computation, Security Evaluation, Fundamental of Cryptography, Combinatorial Group Theory

    Research period: 2021.4

Awards

  • IWSEC 2022 Best Student Paper Award

    2022.9   IWSEC 2022  

  • 2021年度大川出版賞

    2022.3   公益財団法人 大川情報通信基金   著書『耐量子計算機暗号』(森北出版, 2020年)に対する授賞

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    著書『耐量子計算機暗号』(森北出版)に対して、公益財団法人大川情報通信基金より授与された賞である。同賞は情報・通信分野に関する優れた図書について、これを表彰すると共に、情報・通信分野のさらなる発展と啓蒙に寄与するという趣旨の賞である。

  • コンピュータセキュリティシンポジウム2020(CSS2020)学生論文賞

    2020.10   情報処理学会   「定数ラウンドかつ対数サイズ通信量の秘匿配列アクセスプロトコル」, 樋渡 啓太郎, 縫田 光司 (*過去の所属先における受賞)

  • IWSEC 2020 Best Student Paper Award

    2020.9   IWSEC 2020 Program Committee  

  • IWSEC 2020 Best Paper Award

    2020.9   IWSEC 2020 Program Committee  

  • 平成30年度科学技術分野の文部科学大臣表彰科学技術賞(研究部門)

    2018.4   文部科学省   「高機能暗号およびその秘匿検索技術への応用に関する研究」, 花岡 悟一郎, 清水 佳奈, 縫田 光司 (*過去の所属先における受賞)

  • 第5回生命医薬情報学連合大会 研究奨励賞

    2016.10   第5回生命医薬情報学連合大会   「Secure String Pattern Match Based on Wavelet Matrix」, 須藤 弘貴, 神保 元脩, 縫田 光司, 清水 佳奈 (*過去の所属先における受賞)

  • 生命医薬情報学連合大会2015年大会 最優秀口頭発表賞

    2015.10   生命医薬情報学連合大会2015年大会   「Efficient Privacy-Preserving Genomic Sequence Search」, 清水 佳奈, 縫田 光司, Gunnar Rätsch (*過去の所属先における受賞)

  • コンピュータセキュリティシンポジウム2015(CSS2015)学生論文賞

    2015.10   情報処理学会   「隠し共有ストレージ機能を用いた入出力のサイズを隠す二者間秘密計算の実現(不)可能性」, 品川 和雅, 縫田 光司, 金山 直樹, 西出 隆志, 花岡 悟一郎, 岡本 栄司 (*過去の所属先における受賞)

  • 生命医薬情報学連合大会2015年大会 研究奨励賞

    2015.10   生命医薬情報学連合大会2015年大会   「Efficient Privacy-Preserving Genomic Sequence Search」, 清水 佳奈, 縫田 光司, Gunnar Rätsch (*過去の所属先における受賞)

  • コンピュータセキュリティシンポジウム2014(CSS2014)優秀デモンストレーション賞

    2014.10   情報処理学会   「範囲指定型問い合わせに対する効率的なデータベース秘匿検索プロトコル」, 照屋 唯紀, Nuttapong Attrapadung, 稲村 勝樹, 松田 隆宏, 中川 紗菜美, 縫田 光司, 花岡 悟一郎, 清水 佳奈 (*過去の所属先における受賞)

  • コンピュータセキュリティシンポジウム2013(CSS2013)優秀デモンストレーション賞

    2013.10   情報処理学会   「双方向の情報を秘匿可能な効率的化合物データベース検索プロトコル」, 縫田 光司, 照屋 唯紀, 花岡 悟一郎, 松田 隆宏, 矢内 直人, 中川 紗菜美, 清水 佳奈 (*過去の所属先における受賞)

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Papers

  • Efficient and Generic Methods to Achieve Active Security in Private Information Retrieval and More Advanced Database Search Reviewed International journal

    Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

    Proceedings of EUROCRYPT 2024 (Part V)   LNCS ( 14655 )   92 - 121   2024.5

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    Language:Japanese   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-031-58740-5_4

  • Homomorphic Secret Sharing for Multipartite and General Adversary Structures Supporting Parallel Evaluation of Low-Degree Polynomials Reviewed International journal

    Reo Eriguchi, Koji Nuida

    Proceedings of ASIACRYPT 2021 (Part II)   191 - 221   2021.12

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-030-92075-3_7

  • Non-Interactive Secure Multiparty Computation for Symmetric Functions, Revisited: More Efficient Constructions and Extensions Reviewed International journal

    Reo Eriguchi, Kazuma Ohara, Shota Yamada, Koji Nuida

    Proceedings of CRYPTO 2021 (Part II)   LNCS ( 12826 )   305 - 334   2021.8

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-030-84245-1_11

  • Cryptographic Pseudorandom Generators Can Make Cryptosystems Problematic Reviewed International journal

    Koji Nuida

    Proceedings of PKC 2021 (Part II)   LNCS ( 12711 )   441 - 468   2021.5

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-030-75248-4_16

  • On Weighted-Sum Orthogonal Latin Squares and Secret Sharing Reviewed

    Koji Nuida, Tomoko Adachi

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (Letter)   E107-A ( 9 )   1492 - 1495   2024.9

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2023DML0002

  • Card-based Protocols for Private Set Intersection and Union Reviewed

    Anastasiia Doi, Tomoki Ono, Yoshiki Abe, Takeshi Nakai, Kazumasa Shinagawa, Yohei Watanabe, Koji Nuida, Mitsugu Iwamoto

    New Generation Computing   42   359 - 380   2024.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00354-024-00268-z

  • A Simple and Elementary Proof of Zorn’s Lemma Reviewed

    Koji Nuida

    Discrete Mathematics Letters   13   108 - 110   2024.7

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.47443/dml.2023.143

  • How to Covertly and Uniformly Scramble the 15 Puzzle and Rubik's Cube Reviewed International journal

    Kazumasa Shinagawa, Kazuki Kanai, Kengo Miyamoto, Koji Nuida

    Proceedings of FUN 2024 (12th International Conference on Fun with Algorithms)   LIPIcs ( 291 )   30:1 - 30:15   2024.5

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    DOI: 10.4230/LIPIcs.FUN.2024.30

  • Explicit Lower Bounds for Communication Complexity of PSM for Concrete Functions Reviewed International journal

    Kazumasa Shinagawa, Koji Nuida

    Proceedings of INDOCRYPT 2023 (Part II)   LNCS ( 14460 )   45 - 61   2024.3

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-031-56235-8_3

  • On Extension of Evaluation Algorithms in Keyed-Homomorphic Encryption Reviewed International journal

    Hirotomo Shinoki, Koji Nuida

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E107-A ( 3 )   218 - 233   2024.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2023CIP0007

  • Correlated Randomness Reduction in Domain-Restricted Secure Two-Party Computation Reviewed International journal

    Keitaro Hiwatashi, Koji Nuida

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E107-A ( 3 )   283 - 290   2024.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2023CIP0023

  • Uniform Cyclic Group Factorizations of Finite Groups Reviewed International journal

    Kazuki Kanai, Kengo Miyamoto, Koji Nuida, Kazumasa Shinagawa

    Communications in Algebra   52 ( 5 )   2174 - 2184   2024.3   ISSN:0092-7872 eISSN:1532-4125

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/00927872.2023.2285908

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  • ルービックキューブを秘匿したまま一様ランダムにスクランブルする方法

    品川 和雅, 金井 和貴, 宮本 賢伍, 縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS 2024)予稿集   2024.1

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    Language:Japanese   Publishing type:Research paper (other academic)  

  • Threshold Fully Homomorphic Encryption over the Torus Reviewed International journal

    Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Akira Nakashima, Toshiyuki Isshiki, Kengo Mori

    Proceedings of ESORICS 2023 (Part I)   LNCS ( 14344 )   45 - 65   2024.1

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    DOI: 10.1007/978-3-031-50594-2_3

  • ハイブリッドStreaming法によるCRYSTALS-Dilithiumのリソース最適化

    高橋 康, 西田 直央, 海上 勇二, 豊永 三朗, 池松 泰彦, 縫田 光司, 安田 雅哉

    2024年暗号と情報セキュリティシンポジウム(SCIS 2024)予稿集   2024.1

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  • 3変数ブール関数に対するPSMプロトコルの通信量の上下界

    品川 和雅, 縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS 2024)予稿集   2024.1

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  • 秘密計算のsemi-honest安全性定義について

    縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS 2024)予稿集   2024.1

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  • カードベース暗号に現れる語の組合せ論

    品川 和雅, 縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS 2024)予稿集   2024.1

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  • B-SIDHに対するCastryck-Decru攻撃の構成と実装

    #吉住 崚, @小貫 啓史, @大橋 亮, @工藤 桃成, @縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS 2024)予稿集   2024.1

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  • Private Simultaneous Messages Based on Quadratic Residues Reviewed International journal

    Kazumasa Shinagawa, Reo Eriguchi, Shohei Satake, Koji Nuida

    Designs, Codes and Cryptography   91 ( 12 )   3915 - 3932   2023.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s10623-023-01279-5

  • Efficient Noise Generation Protocols for Differentially Private Multiparty Computation Reviewed International journal

    Reo Eriguchi, Atsunori Ichikawa, Noboru Kunihiro, Koji Nuida

    IEEE Transactions on Dependable and Secure Computing   20 ( 6 )   4486 - 4501   2023.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TDSC.2022.3227568

  • Efficient Construction of CGL Hash Function Using Legendre Curves Reviewed International journal

    Yuji Hashimoto, Koji Nuida

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E106-A ( 9 )   1131 - 1140   2023.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2022DMP0003

  • Efficient Supersingularity Testing of Elliptic Curves Using Legendre Curves Reviewed International journal

    Yuji Hashimoto, Koji Nuida

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E106-A ( 9 )   1119 - 1130   2023.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2022DMP0002

  • Efficient Card-Based Millionaires' Protocols via Non-Binary Input Encoding Reviewed International journal

    Koji Nuida

    Proceedings of IWSEC 2023   LNCS ( 14128 )   237 - 254   2023.8

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    DOI: 10.1007/978-3-031-41326-1_13

    Repository Public URL: https://hdl.handle.net/2324/7159814

  • Exponential Correlated Randomness is Necessary in Communication-Optimal Perfectly Secure Two-Party Computation Reviewed International journal

    Keitaro Hiwatashi, Koji Nuida

    Proceedings of ITC 2023   ( 18 )   1 - 16   2023.7

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    DOI: 10.4230/LIPIcs.ITC.2023.18

  • Explicit and Nearly Tight Lower Bound for 2-party Perfectly Secure FSS Reviewed International journal

    Keitaro Hiwatashi, Koji Nuida

    Proceedings of ACNS 2023 (Part II)   LNCS ( 13906 )   541 - 554   2023.6

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    DOI: 10.1007/978-3-031-33491-7_20

  • Multiplicative and Verifiably Multiplicative Secret Sharing for Multipartite Adversary Structures Reviewed International journal

    Reo Eriguchi, Noboru Kunihiro, Koji Nuida

    Designs, Codes and Cryptography   91   1751 - 1778   2023.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s10623-022-01177-2

  • Linear Algebraic Approach to Strongly Secure Ramp Secret Sharing for General Access Structures with Application to Symmetric PIR Reviewed International journal

    Reo Eriguchi, Noboru Kunihiro, Koji Nuida

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   E106A ( 3 )   263 - 271   2023.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2022CIP0001

  • Short Lattice Signature Scheme with Tighter Reduction under Ring-SIS Assumption Reviewed International journal

    Kaisei Kajita, Go Ohtake, Kazuto Ogawa, Koji Nuida, Tsuyoshi Takagi

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   E106A ( 3 )   228 - 240   2023.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2022CIP0017

  • 不定方程式暗号のソフトウェア実装における高速化について

    #真島 侑斗, @池松 泰彦, @秋山 浩一郎, @縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • TFHEに基づくクライアント補助型閾値完全準同型暗号

    林 卓也, 一色 寿幸, 森 健吾, 縫田 光司, 杉崎 行優, 土田 光

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • 具体的な関数に対する秘匿同時通信プロトコルの通信量の上下界

    品川 和雅, 縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • 木状相互通信パターンにおける秘密計算プロトコル

    三宅 美歩, 縫田 光司, 河内 亮周

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • 不定方程式暗号Giophantus+に対する準同型演算

    #中島 明, @縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • online-optimalな2者間秘密計算における乱数長の下界について

    樋渡 啓太郎, 縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • 入力の非二進符号化に基づく効率的な大小比較カードプロトコル

    縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • 有限時間カードベースプロトコルから秘匿同時通信プロトコルへの一般的変換

    品川 和雅, 縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS 2023)予稿集   2023.1

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  • On the Optimal Communication Complexity of Error-Correcting Multi-Server PIR Reviewed International journal

    Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

    Proceedings of TCC 2022   60 - 88   2022.12

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-031-22368-6_3

  • Chosen Ciphertext Secure Keyed Two-Level Homomorphic Encryption Reviewed International journal

    Yusaku Maeda, Koji Nuida

    Proceedings of ACISP 2022   209 - 228   2022.11

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-031-22301-3_11

  • 同種写像暗号CSIDHのHesse曲線による構成

    小濱 大輝, 野本 慶一郎, 池松 泰彦, 縫田 光司, 小林 真一

    コンピュータセキュリティシンポジウム2022(CSS 2022)予稿集   2022.10

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  • Card-based Cryptographic Protocols for Private Set Intersection Reviewed International journal

    Anastasiia Doi, Tomoki Ono, Takeshi Nakai, Kazumasa Shinagawa, Yohei Watanabe, Koji Nuida, Mitsugu Iwamoto

    Proceedings of ISITA 2022   261 - 265   2022.10

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  • An Improvement of a Key Exchange Protocol Relying on Polynomial Maps Reviewed International journal

    Keita Suzuki, Koji Nuida

    International Journal of Mathematics for Industry   13 ( 1 )   2022.9

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    DOI: 10.1142/S2661335222500022

  • An Elementary Linear-Algebraic Proof without Computer-Aided Arguments for the Group Law on Elliptic Curves Reviewed International journal

    Koji Nuida

    International Journal of Mathematics for Industry   13 ( 1 )   2022.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1142/S2661335221500015

    Repository Public URL: http://hdl.handle.net/2324/4741656

  • On Extension of Evaluation Algorithms in Keyed-Homomorphic Encryption Reviewed International journal

    Hirotomo Shinoki, Koji Nuida

    Proceedings of IWSEC 2022   189 - 207   2022.8

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-031-15255-9_10

  • Computational Irrelevancy: Bridging the Gap between Pseudo- and Real Randomness in MPC Protocols Reviewed International journal

    Nariyasu Heseri, Koji Nuida

    Proceedings of IWSEC 2022   208 - 223   2022.8

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-031-15255-9_11

    Repository Public URL: http://hdl.handle.net/2324/4798377

  • Multi-Server PIR with Full Error Detection and Limited Error Correction Reviewed International journal

    Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

    Proceedings of ITC 2022   1:1 - 1:20   2022.7

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.4230/LIPIcs.ITC.2022.1

  • How to Handle Invalid Queries for Malicious-Private Protocols Based on Homomorphic Encryption Reviewed International journal

    Koji Nuida

    Proceedings of APKC 2022 (The 9th ACM ASIA Public-Key Cryptography Workshop)   15 - 25   2022.5

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1145/3494105.3526238

    Repository Public URL: http://hdl.handle.net/2324/4798346

  • Tight Security of Twin-DH Hashed ElGamal KEM in Multi-User Setting Reviewed International journal

    Yuji Hashimoto, Koji Nuida, Goichiro Hanaoka

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E105-A ( 3 )   173 - 181   2022.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2021CIP0008

  • An Efficient Secure Division Protocol Using Approximate Multi-Bit Product and New Constant-Round Building Blocks Reviewed International journal

    Keitaro Hiwatashi, Satsuya Ohata, Koji Nuida

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E105-A ( 3 )   404 - 416   2022.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2021TAP0004

  • Efficiency and Accuracy Improvements of Secure Floating-Point Addition over Secret Sharing Reviewed International journal

    Kota Sasaki, Koji Nuida

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E105-A ( 3 )   231 - 241   2022.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.2021CIP0013

  • Computational Irrelevancy: Bridging the Gap between Pseudo- and Real Randomness in MPC Protocols

    Nariyasu Heseri, Koji Nuida

    2022.1

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    Language:English   Publishing type:Research paper (other academic)  

  • 準同型暗号に基づく秘密計算の能動的攻撃者に対する秘匿性について

    縫田 光司

    2022年暗号と情報セキュリティシンポジウム(SCIS2022)予稿集   2022.1

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    Language:Japanese   Publishing type:Research paper (other academic)  

  • 秘密分散を用いた秘匿浮動小数点数除算・平方根計算の改良

    仁平 貴大, 縫田 光司

    2022年暗号と情報セキュリティシンポジウム(SCIS2022)予稿集   2022.1

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    Language:Japanese   Publishing type:Research paper (other academic)  

  • 鍵付き準同型暗号における演算の拡張と安全性

    篠木 寛鵬, 縫田 光司

    2022年暗号と情報セキュリティシンポジウム(SCIS2022)予稿集   2022.1

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    Language:Japanese   Publishing type:Research paper (other academic)  

  • Efficient Fully Anonymous Public-Key Trace and Revoke with Adaptive IND-CCA Security Reviewed International journal

    Mriganka Mandal, Ramprasad Sarkar, Junbeom Hur, Koji Nuida

    Proceedings of ISPEC 2021   168 - 189   2021.12

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-030-93206-0_11

  • Improved Supersingularity Testing of Elliptic Curves Using Legendre Form Reviewed International journal

    Yuji Hashimoto, Koji Nuida

    Proceedings of Computer Algebra in Scientific Computing 2021 (CASC 2021)   121 - 135   2021.9

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1007/978-3-030-85165-1_8

  • Legendre型の楕円曲線を用いた超特異性判定アルゴリズムの効率化

    橋本 侑知, 縫田 光司

    日本応用数理学会2021年度年会予稿集   328 - 329   2021.9

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    Language:Japanese   Publishing type:Research paper (other academic)  

  • Accelerating Secure (2+1)-Party Computation by Insecure but Efficient Building Blocks Reviewed International journal

    Keitaro Hiwatashi, Ken Ogura, Satsuya Ohata, Koji Nuida

    Proceedings of ACM ASIACCS 2021   616 - 627   2021.6

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    Language:English   Publishing type:Research paper (international conference proceedings)  

    DOI: 10.1145/3433210.3453109

▼display all

Books

  • 耐量子計算機暗号

    縫田 光司( Role: Sole author)

    森北出版  2020.8 

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    Language:Japanese   Book type:Scholarly book

Presentations

  • Efficient and Generic Methods to Achieve Active Security in Private Information Retrieval and More Advanced Database Search International conference

    Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

    EUROCRYPT 2024  2024.5 

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    Event date: 2024.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Switzerland  

  • Homomorphic Secret Sharing for Multipartite and General Adversary Structures Supporting Parallel Evaluation of Low-Degree Polynomials International conference

    Reo Eriguchi, Koji Nuida

    ASIACRYPT 2021  2021.12 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Non-Interactive Secure Multiparty Computation for Symmetric Functions, Revisited: More Efficient Constructions and Extensions International conference

    Reo Eriguchi, Kazuma Ohara, Shota Yamada, Koji Nuida

    CRYPTO 2021  2021.8 

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    Event date: 2021.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Cryptographic Pseudorandom Generators Can Make Cryptosystems Problematic International conference

    Koji Nuida

    PKC 2021  2021.5 

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    Event date: 2021.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Efficient and Generic Methods to Achieve Active Security in Private Information Retrieval and More Advanced Database Search (from EUROCRYPT 2024) Invited

    2024.9 

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    Event date: 2024.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  • Multi-Key Homomorphic Encryption with Threshold Re-Encryption International conference

    Akira Nakashima, Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Kengo Mori, Toshiyuki Isshiki

    SAC 2024  2024.8 

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    Event date: 2024.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:the Université de Québec à Montréal   Country:Canada  

  • How to Covertly and Uniformly Scramble the 15 Puzzle and Rubik's Cube International conference

    Kazumasa Shinagawa, Kazuki Kanai, Kengo Miyamoto, Koji Nuida

    FUN 2024 (12th International Conference on Fun with Algorithms)  2024.6 

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    Event date: 2024.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Italy  

  • 有限群の一様巡回群分解とカードベース暗号

    金井 和貴, 宮本 賢伍, 縫田 光司, 品川 和雅

    日本数学会2024年度年会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪公立大学(大阪市)   Country:Japan  

  • 半順序集合の初等的性質によるZornの補題の証明

    縫田 光司

    日本数学会2024年度年会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪公立大学(大阪市)   Country:Japan  

  • B-SIDHに対するCastryck-Decru攻撃の構成と実装

    吉住 崚, 小貫 啓史, 大橋 亮, 工藤 桃成, 縫田 光司

    日本応用数理学会第20回研究部会連合発表会  2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長岡技術科学大学(長岡市)   Country:Japan  

  • On the existence and enumeration of superspecial hyperelliptic curves of genus 3

    2024.3 

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    Event date: 2024.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • ルービックキューブを秘匿したまま一様ランダムにスクランブルする方法

    品川 和雅, 金井 和貴, 宮本 賢伍, 縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS2024)  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長崎市   Country:Japan  

  • ハイブリッドStreaming法によるCRYSTALS-Dilithiumのリソース最適化

    高橋 康, 西田 直央, 海上 勇二, 豊永 三朗, 池松 泰彦, 縫田 光司, 安田 雅哉

    2024年暗号と情報セキュリティシンポジウム(SCIS2024)  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長崎市   Country:Japan  

  • 3変数ブール関数に対するPSMプロトコルの通信量の上下界

    品川 和雅, 縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS2024)  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長崎市   Country:Japan  

  • 秘密計算のsemi-honest安全性定義について

    縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS2024)  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長崎市   Country:Japan  

  • カードベース暗号に現れる語の組合せ論

    品川 和雅, 縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS2024)  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長崎市   Country:Japan  

  • B-SIDHに対するCastryck-Decru攻撃の構成と実装

    #吉住 崚, @小貫 啓史, @大橋 亮, @工藤 桃成, @縫田 光司

    2024年暗号と情報セキュリティシンポジウム(SCIS2024)  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:長崎市   Country:Japan  

  • 耐量子計算機暗号に関するいくつかの研究事例 Invited

    縫田 光司

    MACSセミナー「暗号理論の数理と社会実装」  2024.1 

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    Event date: 2024.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都大学(京都市)   Country:Japan  

  • 超特別3次元アーベル多様体間のRichelot同種写像グラフ計算について

    @大橋 亮, @小貫 啓史, @工藤 桃成, #吉住 崚, @縫田 光司

    研究集会「Computer Algebra - Foundations and Applications」  2023.12 

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    Event date: 2023.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都大学(京都市)   Country:Japan  

  • Explicit Lower Bounds for Communication Complexity of PSM for Concrete Functions International conference

    Kazumasa Shinagawa, Koji Nuida

    INDOCRYPT 2023  2023.12 

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    Event date: 2023.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  • Threshold Fully Homomorphic Encryption over the Torus International conference

    Yukimasa Sugizaki, Hikaru Tsuchida, Takuya Hayashi, Koji Nuida, Akira Nakashima, Toshiyuki Isshiki, Kengo Mori

    ESORICS 2023  2023.9 

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    Event date: 2023.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Netherlands  

  • Efficient Card-Based Millionaires' Protocols via Non-Binary Input Encoding International conference

    Koji Nuida

    IWSEC 2023  2023.8 

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    Event date: 2023.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Explicit and Nearly Tight Lower Bound for 2-party Perfectly Secure FSS International conference

    Keitaro Hiwatashi, Koji Nuida

    ACNS 2023  2023.6 

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    Event date: 2023.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Exponential Correlated Randomness is Necessary in Communication-Optimal Perfectly Secure Two-Party Computation International conference

    Keitaro Hiwatashi, Koji Nuida

    ITC 2023  2023.6 

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    Event date: 2023.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Denmark  

  • 不定方程式暗号のソフトウェア実装における高速化について

    #真島 侑斗, @池松 泰彦, @秋山 浩一郎, @縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • TFHEに基づくクライアント補助型閾値完全準同型暗号

    林 卓也, 一色 寿幸, 森 健吾, 縫田 光司, 杉崎 行優, 土田 光

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • 具体的な関数に対する秘匿同時通信プロトコルの通信量の上下界

    品川 和雅, 縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • 木状相互通信パターンにおける秘密計算プロトコル

    三宅 美歩, 縫田 光司, 河内 亮周

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • 不定方程式暗号Giophantus+に対する準同型演算

    #中島 明, @縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • online-optimalな2者間秘密計算における乱数長の下界について

    樋渡 啓太郎, 縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • 入力の非二進符号化に基づく効率的な大小比較カードプロトコル

    縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • 有限時間カードベースプロトコルから秘匿同時通信プロトコルへの一般的変換

    品川 和雅, 縫田 光司

    2023年暗号と情報セキュリティシンポジウム(SCIS2023)  2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:小倉市   Country:Japan  

  • 論文"Breaking Category Five SPHINCS+ with SHA-256"の紹介

    縫田 光司

    2023.1 

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    Event date: 2023.1

    Language:Japanese   Presentation type:Symposium, workshop panel (public)  

    Venue:小倉市   Country:Japan  

  • 数学者、暗号の野で遊ぶ Invited

    縫田 光司

    岡シンポジウム  2022.12 

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    Event date: 2022.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:奈良女子大学(奈良市)   Country:Japan  

  • Chosen Ciphertext Secure Keyed Two-Level Homomorphic Encryption International conference

    Yusaku Maeda, Koji Nuida

    ACISP 2022  2022.11 

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    Event date: 2022.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • On the Optimal Communication Complexity of Error-Correcting Multi-Server PIR International conference

    Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

    TCC 2022  2022.11 

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    Event date: 2022.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • 同種写像暗号CSIDHのHesse曲線による構成

    小濱 大輝, 野本 慶一郎, 池松 泰彦, 縫田 光司, 小林 真一

    コンピュータセキュリティシンポジウム2022(CSS 2022)  2022.10 

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    Event date: 2022.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:熊本市   Country:Japan  

  • Card-based Cryptographic Protocols for Private Set Intersection International conference

    Anastasiia Doi, Tomoki Ono, Takeshi Nakai, Kazumasa Shinagawa, Yohei Watanabe, Koji Nuida, Mitsugu Iwamoto

    ISITA 2022  2022.10 

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    Event date: 2022.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Computational Irrelevancy: Bridging the Gap between Pseudo- and Real Randomness in MPC Protocols International conference

    Nariyasu Heseri, Koji Nuida

    IWSEC 2022  2022.9 

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    Event date: 2022.8 - 2022.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • On Extension of Evaluation Algorithms in Keyed-Homomorphic Encryption International conference

    Hirotomo Shinoki, Koji Nuida

    IWSEC 2022  2022.9 

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    Event date: 2022.8 - 2022.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

    Repository Public URL: http://hdl.handle.net/2324/4798374

  • Towards Constructing Fully Homomorphic Encryption without Ciphertext Noise from Group Theory Invited International conference

    Koji Nuida

    63rd La Trobe Kyushu Joint Seminar on Mathematics for Industry  2022.8 

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    Event date: 2022.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Multi-Server PIR with Full Error Detection and Limited Error Correction International conference

    Reo Eriguchi, Kaoru Kurosawa, Koji Nuida

    Conference on Information-Theoretic Cryptography (ITC 2022)  2022.7 

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    Event date: 2022.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • How to Handle Invalid Queries for Malicious-Private Protocols Based on Homomorphic Encryption International conference

    Koji Nuida

    APKC 2022 (The 9th ACM ASIA Public-Key Cryptography Workshop)  2022.5 

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    Event date: 2022.5

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 耐量子計算機暗号:量子コンピュータ時代の安全な情報通信に向けて Invited

    縫田 光司

    研究集会「量子暗号理論と耐量子暗号」  2022.3 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • 準同型暗号に基づく秘密計算の能動的攻撃者に対する秘匿性について

    縫田 光司

    2022年暗号と情報セキュリティシンポジウム(SCIS2022)  2022.1 

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    Event date: 2022.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Computational Irrelevancy: Bridging the Gap between Pseudo- and Real Randomness in MPC Protocols

    Nariyasu Heseri, Koji Nuida

    2022.1 

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    Event date: 2022.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • 鍵付き準同型暗号における演算の拡張と安全性

    篠木 寛鵬, 縫田 光司

    2022年暗号と情報セキュリティシンポジウム(SCIS2022)  2022.1 

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    Event date: 2022.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪市   Country:Japan  

  • 秘密分散を用いた秘匿浮動小数点数除算・平方根計算の改良

    仁平 貴大, 縫田 光司

    2022年暗号と情報セキュリティシンポジウム(SCIS2022)  2022.1 

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    Event date: 2022.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Efficient Fully Anonymous Public-Key Trace and Revoke with Adaptive IND-CCA Security International conference

    Mriganka Mandal, Ramprasad Sarkar, Junbeom Hur, Koji Nuida

    ISPEC 2021  2021.12 

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    Event date: 2021.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:India  

  • Improved Supersingularity Testing of Elliptic Curves Using Legendre Form International conference

    Yuji Hashimoto, Koji Nuida

    Computer Algebra in Scientific Computing 2021 (CASC 2021)  2021.9 

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    Event date: 2021.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Legendre型の楕円曲線を用いた超特異性判定アルゴリズムの効率化

    橋本 侑知, 縫田 光司

    日本応用数理学会2021年度年会  2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

  • Non-Interactive Secure Multiparty Computation for Symmetric Functions, Revisited: More Efficient Constructions and Extensions Invited

    2021.9 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Accelerating Secure (2+1)-Party Computation by Insecure but Efficient Building Blocks International conference

    Keitaro Hiwatashi, Ken Ogura, Satsuya Ohata, Koji Nuida

    ACM ASIACCS 2021  2021.6 

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    Event date: 2021.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

▼display all

MISC

  • 乱数と暗号技術の安全性(特集「現代暗号のキーワード」)

    縫田 光司

    『科学』(岩波書店)2024年3月号   2024.3

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • 群としてのコクセター群(特集「有限群からその先へ」)

    縫田 光司

    『数学セミナー』(日本評論社)2023年3月号   2023.2

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • エレガントな解答をもとむ

    縫田 光司

    『数学セミナー』(日本評論社)2022年6月号(出題)、2022年9月号(解説)   2022.8

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

Professional Memberships

  • 日本数学会

  • 電子情報通信学会

  • 応用数理学会

Committee Memberships

  • 電子情報通信学会   情報セキュリティ研究専門委員会 専門委員   Domestic

    2019.6 - Present   

Academic Activities

  • ACISP 2025 PC member International contribution

    Role(s): Planning, management, etc.

    2025.7

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    Type:Academic society, research group, etc. 

  • CSS 2024 プログラム委員

    2024.10

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    Type:Competition, symposium, etc. 

  • IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Special Section on Discrete Mathematics and Its Applications, Guest Associate Editor International contribution

    2024.8 - 2025.9

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    Type:Academic society, research group, etc. 

  • IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Special Section on Discrete Mathematics and Its Applications, Guest Associate Editor International contribution

    2023.8 - 2024.9

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    Type:Academic society, research group, etc. 

  • International Journal of Mathematics for Industry, Editor International contribution

    2023.6 - Present

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    Type:Academic society, research group, etc. 

  • FHE.org Conference 2023 PC member International contribution

    FHE.org Conference 2023  ( Japan ) 2023.3

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    Type:Competition, symposium, etc. 

  • IWSEC 2022 PC member International contribution

    IWSEC 2022  ( Tokyo Japan ) 2022.8 - 2022.9

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    Type:Competition, symposium, etc. 

  • 数学 (日本数学会)編集委員

    2022.7 - 2026.6

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    Type:Academic society, research group, etc. 

  • ACISP 2021 PC member International contribution

    ACISP 2021  ( Australia ) 2021.12

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    Type:Competition, symposium, etc. 

  • CSS 2021 プログラム委員

    コンピュータセキュリティシンポジウム2021 (CSS 2021)  ( オンライン開催 ) 2021.10

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    Type:Competition, symposium, etc. 

  • IWSEC 2021 PC member International contribution

    IWSEC 2021  2021.9

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    Type:Competition, symposium, etc. 

  • ACM ASIACCS 2021 PC member International contribution

    ACM ASIACCS 2021  2021.6

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    Type:Competition, symposium, etc. 

  • IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Associate Editor International contribution

    2020.6 - 2024.6

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    Type:Academic society, research group, etc. 

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Research Projects

  • 暗号技術の安全性証明における暗黙知の再考および明晰な安全性証明の実現

    2022.4

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    Authorship:Principal investigator 

  • 暗号技術の安全性証明における暗黙知の再考および明晰な安全性証明の実現

    Grant number:22K11906  2022 - 2024

    日本学術振興会  科学研究費助成事業  基盤研究(C)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 高機能な秘密計算暗号に向けた「弱い代数系」の組合せ論的群論に基づく研究

    2019.4 - 2022.3

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    Authorship:Principal investigator 

  • あらゆる高機能暗号方式の相互変換を可能にするアジャイルクリプト技術

    2019.4

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    Authorship:Coinvestigator(s) 

  • 記憶容量制約型攻撃モデルに基づく長期的安全な秘密計算技術の研究開発

    2019.2 - 2022.3

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    Authorship:Principal investigator 

  • 高機能な秘密計算暗号に向けた「弱い代数系」の組合せ論的群論に基づく研究

    Grant number:19H01804  2019 - 2021

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 記憶容量制約型攻撃モデルに基づく長期的安全な秘密計算技術の研究開発

    2018 - 2021

    総務省戦略的情報通信研究開発推進事業(SCOPE)平成30年度ICT研究者育成型(若手研究者枠)

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    Authorship:Principal investigator  Grant type:Contract research

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Class subject

  • 情報数学特論4

    2024.10 - 2025.3   Second semester

  • 国際共創力強化インターンシップ

    2024.4 - 2025.3   Full year

  • 産学共創力強化インターンシップ

    2024.4 - 2025.3   Full year

  • 異分野共創力強化インターンシップ

    2024.4 - 2025.3   Full year

  • 複素関数論(電情EE)

    2024.4 - 2024.9   First semester

  • 複素関数論(電情A)

    2024.4 - 2024.9   First semester

  • 抽象代数学の基礎

    2023.10 - 2024.3   Second semester

  • 情報数学特論4

    2023.10 - 2024.3   Second semester

  • 数学特論B3

    2023.10 - 2023.12   Fall quarter

  • 国際共創力強化インターンシップ

    2023.4 - 2024.3   Full year

  • 数学共創モデリング

    2023.4 - 2024.3   Full year

  • 産学共創力強化インターンシップ

    2023.4 - 2024.3   Full year

  • 異分野共創力強化インターンシップ

    2023.4 - 2024.3   Full year

  • 数理科学特論5

    2023.4 - 2023.9   First semester

  • MMA講究C

    2023.4 - 2023.9   First semester

  • 数理科学特別講義Ⅴ

    2023.4 - 2023.9   First semester

  • 組合せ論大意

    2023.4 - 2023.9   First semester

  • 数学特論7

    2023.4 - 2023.9   First semester

  • 抽象代数学の基礎

    2022.10 - 2023.3   Second semester

  • 情報数学特論4

    2022.10 - 2023.3   Second semester

  • 数学特論B3

    2022.10 - 2022.12   Fall quarter

  • 国際共創力強化インターンシップ

    2022.4 - 2023.3   Full year

  • 産学共創力強化インターンシップ

    2022.4 - 2023.3   Full year

  • 異分野共創力強化インターンシップ

    2022.4 - 2023.3   Full year

  • 数学特論7(組合せ論)

    2022.4 - 2022.9   First semester

  • Combinatorics

    2022.4 - 2022.9   First semester

  • 組合せ論大意

    2022.4 - 2022.9   First semester

  • 数学特論7(組合せ論)

    2021.4 - 2021.9   First semester

  • [M2]Combinatorics

    2021.4 - 2021.9   First semester

  • [M2]組合せ論大意

    2021.4 - 2021.9   First semester

  • 組合せ論大意

    2021.4 - 2021.9   First semester

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FD Participation

  • 2024.4   Role:Participation   Title:数理学府FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2024.2   Role:Participation   Title:数理学府FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2023.8   Role:Participation   Title:数理学府FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2022.4   Role:Participation   Title:数理学府FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2021.7   Role:Participation   Title:数理学府FD

    Organizer:[Undergraduate school/graduate school/graduate faculty]

Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.

  • 2024  産業技術総合研究所 サイバーフィジカルセキュリティ研究センター  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:客員研究員

  • 2023  産業技術総合研究所 サイバーフィジカルセキュリティ研究センター  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:客員研究員

  • 2023  東京都立大学 理学部・理学研究科  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:2023年8月中の4日間

  • 2022  産業技術総合研究所 サイバーフィジカルセキュリティ研究センター  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:客員研究員

  • 2021  産業技術総合研究所 サイバーフィジカルセキュリティ研究センター  Domestic/International Classification:Japan 

    Semester, Day Time or Duration:客員研究員

Social Activities

  • 群の作用と整数と暗号(第38回JST数学キャラバンにおける高校生・一般向け講演)

    中部大学創発学術院(主催)、中部大学理工学部、国立研究開発法人 科学技術振興機構(JST)(共催)、愛知県、愛知県教育委員会、名古屋市教育委員会、春日井市教育委員会(後援)  中部大学春日井キャンパス  2023.12

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    Audience: General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 秘密計算と数学(数学・数理科学5研究拠点合同市民講演会「数学・数理科学の未来!?」における講演)

    情報・システム研究機構 統計数理研究所、明治大学先端数理科学インスティテュート、九州大学マス・フォア・インダストリ研究所、京都大学数理解析研究所、大阪公立大学数学研究所  統計数理研究所  2023.11

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    Audience: General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

  • 秘密計算と数学 (「くまもと数学秋祭り」内 研究者講演会コーナー)

    NPO法人数学カフェ  オンライン参加  2022.11

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    Audience: General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

Acceptance of Foreign Researchers, etc.

  • Acceptance period: 2021.4 - 2022.3   (Period):1 month or more

    Nationality:India