Onuki Hiroshi 小貫啓史

Researcher Number	50896173
Other IDs
Affiliation (Current)	2025: 東京大学, 大学院情報理工学系研究科, 特任講師
Affiliation (based on the past Project Information) *help	2022 – 2024: 東京大学, 大学院情報理工学系研究科, 特任助教 2021: 東京大学, 大学院情報理工学系研究科, 特任研究員
Review Section/Research Field	Principal Investigator Basic Section 60070:Information security-related
Keywords	Principal Investigator 同種写像暗号 / 超特別アーベル多様体 / 超特異楕円曲線 / 応用数学 / モジュラー多項式 / 楕円曲線 / 耐量子計算機暗号

Research Projects
(2 results)
Research Products
(20 results)

同種写像暗号への応用を目指した高次元同種写像計算アルゴリズムの構成Principal Investigator
- Principal Investigator
  
  小貫啓史
- Project Period (FY)
  2024 – 2026
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 60070:Information security-related
- Research Institution
  The University of Tokyo
同種写像問題の困難性に基づく耐量子計算機暗号の安全性解析Principal Investigator
- Principal Investigator
  
  小貫啓史
- Project Period (FY)
  2021 – 2024
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 60070:Information security-related
- Research Institution
  The University of Tokyo

All 2023 2022 2021

All Journal Article Presentation

[Journal Article] How to construct CSIDH on Edwards curves2023
- Author(s)
  Moriya Tomoki、Onuki Hiroshi、Takagi Tsuyoshi
- Journal Title
  
  Finite Fields and Their Applications
  
  Volume: 92 Pages: 102310-102310
- DOI
  10.1016/j.ffa.2023.102310
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K17739
[Journal Article] On the key generation in $\mathbf{SQISign}$2023
- Author(s)
  Onuki Hiroshi
- Journal Title
  
  Banach Center Publications
  
  Volume: 126 Pages: 89-104
- DOI
  10.4064/bc126-6
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K17739
[Journal Article] L1-norm ball for CSIDH: Optimal strategy for choosing the secret key space2023
- Author(s)
  Nakagawa Kohei、Onuki Hiroshi、Takayasu Atsushi、Takagi Tsuyoshi
- Journal Title
  
  Discrete Applied Mathematics
  
  Volume: 328 Pages: 70-88
- DOI
  10.1016/j.dam.2022.12.002
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K17739
[Journal Article] Explicit construction of the square-root Vélu's formula on Edwards curves2022
- Author(s)
  Takahashi Shu、Onuki Hiroshi、Takagi Tsuyoshi
- Journal Title
  
  JSIAM Letters
  
  Volume: 14 Issue: 0 Pages: 108-110
- DOI
  10.14495/jsiaml.14.108
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21K17739
[Journal Article] Radical Isogenies on Montgomery Curves2022
- Author(s)
  Onuki Hiroshi、Moriya Tomoki
- Journal Title
  
  Lecture Notes in Computer Science
  
  Volume: 13177 Pages: 473-497
- DOI
  10.1007/978-3-030-97121-2_17
- ISBN
  9783030971205, 9783030971212
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] 楕円曲線族に関するモジュラー多項式の構成と計算アルゴリズム2023
- Author(s)
  小貫啓史
- Organizer
  Computer Algebra - Foundations and Applications
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] 同種写像暗号SIKEに対する鍵復元攻撃2023
- Author(s)
  小貫啓史
- Organizer
  SCAIS 2023
- Invited
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] Modular polynomials for enhanced elliptic curves2023
- Author(s)
  小貫啓史
- Organizer
  SCIS 2023
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] モジュラー多項式の楕円曲線の係数への拡張とその計算アルゴリズム2023
- Author(s)
  小貫啓史
- Organizer
  日本応用数理学会第19回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] 同種写像暗号3: デジタル署名方式SQISign2022
- Author(s)
  小貫啓史
- Organizer
  耐量子計算機暗号と量子情報の数理
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] The Generalized Montgomery Coordinate: A New Computational Tool for Isogeny-based Cryptography2022
- Author(s)
  Tomoki Moriya, Hiroshi Onuki, Yusuke Aikawa, and Tsuyoshi Takagi
- Organizer
  MathCrypt 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] On the key generation in SQISign2022
- Author(s)
  Hiroshi Onuki
- Organizer
  NuTMiC 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] Recent progress in isogeny-based cryptography2022
- Author(s)
  小貫啓史
- Organizer
  CRESTクリプトマス2022年度第2回全体会議
- Invited
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] 同種写像暗号B-SIDHの実験による計算量評価と効率的な素数pの条件2022
- Author(s)
  大槻紗季、青木和麻呂、小貫啓史、高木剛
- Organizer
  SCIS2022
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] 終結式を用いた同種写像計算公式のEdwards曲線上での明示的構成と性能評価2022
- Author(s)
  高橋秀、小貫啓史、高木剛
- Organizer
  日本応用数理学会第18回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] SQISignの公開鍵の安全性2022
- Author(s)
  小貫啓史
- Organizer
  SCIS2022
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] Recent topics for isogeny-based cryptography"2022
- Author(s)
  小貫啓史
- Organizer
  高度化する暗号技術と数学的技法の進展
- Invited
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] Montgomery曲線のx座標を用いた3-同種計算の最小演算コスト2022
- Author(s)
  守谷共起、小貫啓史、相川勇輔、高木剛
- Organizer
  SCIS2022
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] 効率的な同種写像計算Square-root Velu法における最適な添え字集合の探索2022
- Author(s)
  大槻紗季、小貫啓史、高木剛
- Organizer
  日本応用数理学会2022年度年会
- Data Source
  KAKENHI-PROJECT-21K17739
[Presentation] Radical Isogenies on Montgomery Curves2021
- Author(s)
  小貫啓史、守谷共起
- Organizer
  日本応用数理学会2021年度年会
- Data Source
  KAKENHI-PROJECT-21K17739

Onuki Hiroshi 小貫 啓史

Research Projects

Research Products

同種写像暗号への応用を目指した高次元同種写像計算アルゴリズムの構成Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

同種写像問題の困難性に基づく耐量子計算機暗号の安全性解析Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] How to construct CSIDH on Edwards curves2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] On the key generation in $\mathbf{SQISign}$2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] L1-norm ball for CSIDH: Optimal strategy for choosing the secret key space2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Explicit construction of the square-root Vélu&apos;s formula on Edwards curves2022

Author(s)

Journal Title

DOI

ISSN

Language

Data Source

[Journal Article] Radical Isogenies on Montgomery Curves2022

Author(s)

Journal Title

DOI

ISBN

Data Source

[Presentation] 楕円曲線族に関するモジュラー多項式の構成と計算アルゴリズム2023

Author(s)

Organizer

Data Source

[Presentation] 同種写像暗号SIKEに対する鍵復元攻撃2023

Author(s)

Organizer

Data Source

[Presentation] Modular polynomials for enhanced elliptic curves2023

Author(s)

Organizer

Data Source

[Presentation] モジュラー多項式の楕円曲線の係数への拡張とその計算アルゴリズム2023

Author(s)

Organizer

Data Source

[Presentation] 同種写像暗号3: デジタル署名方式SQISign2022

Author(s)

Organizer

Data Source

[Presentation] The Generalized Montgomery Coordinate: A New Computational Tool for Isogeny-based Cryptography2022

Author(s)

Organizer

Data Source

[Presentation] On the key generation in SQISign2022

Author(s)

Organizer

Data Source

[Presentation] Recent progress in isogeny-based cryptography2022

Author(s)

Organizer

Data Source

[Presentation] 同種写像暗号B-SIDHの実験による計算量評価と効率的な素数pの条件2022

Author(s)

Organizer

Data Source

[Presentation] 終結式を用いた同種写像計算公式のEdwards曲線上での明示的構成と性能評価2022

Onuki Hiroshi 小貫啓史

[Journal Article] Explicit construction of the square-root Vélu's formula on Edwards curves2022