Hashimoto Yasufumi 橋本康史

… Alternative Names

HASHIMOTO Yasufumi 橋本康史

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Researcher Number	30452733
Other IDs
Affiliation (Current)	2025: 琉球大学, 理学部, 教授
Affiliation (based on the past Project Information) *help	2025: 琉球大学, 理学部, 准教授 2016 – 2023: 琉球大学, 理学部, 准教授 2014 – 2015: 琉球大学, 理学部, 助教 2010: (財)九州先端科学技術研究所, 研究員 2010: Institute of Systems & Information Technologies KYUSHU, 情報セキュリティ研究室, 研究員 … More 2009 – 2010: Institute of Systems & Information Technologies KYUSHU, 情報セキュリティ研究室, 研究員 2008 – 2010: 財団法人九州先端科学技術研究所, 研究員 2008: Institute of Systems & Information Technologies KYUSHU, 情報セキユリティ研究室, 研究員 Less
Review Section/Research Field	Principal Investigator Algebra / Basic Section 11010:Algebra-related Except Principal Investigator Fundamental theory of informatics
Keywords	Principal Investigator セルバーグゼータ関数 / length spectrum / 跡公式 / 普遍性定理 / ラプラシアンのスペクトル / セルバーグ跡公式 / ラプラシアン / 素測地線定理 / ゼータ関数 / スペクトル … More / 素測地線 / 2次形式の類数 / 双曲多様体 / 不定値2元2次形式の類数 / 不定値2元2次形式 / 不定値二元二次形式 / 合同部分群 / リーマン面 / 素元定理 / Length spectrum … More Except Principal Investigator プライバシ / 普遍安全性 / 安全性検証 / プライバシー保護 / データマイニング / 暗号 Less

数論的な双曲多様体上のセルバーグゼータ関数の研究Principal Investigator
- Principal Investigator
  
  橋本康史
- Project Period (FY)
  2025 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  University of the Ryukyus
双曲多様体上の素測地線分布とセルバーグゼータ関数の研究Principal Investigator
- Principal Investigator
  
  橋本康史
- Project Period (FY)
  2022 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  University of the Ryukyus
Research on distributions of prime geodesics and spectrum using trace formula and zeta functionsPrincipal Investigator
- Principal Investigator
  
  Hashimoto Yasufumi
- Project Period (FY)
  2017 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  University of the Ryukyus
Research on distributions of prime geodesics and spectra of Laplacians on hyperbolic manifoldsPrincipal Investigator
- Principal Investigator
  
  HASHIMOTO Yasufumi
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Algebra
- Research Institution
  University of the Ryukyus
Design and Security Analysis of Cryptographic Protocol for Privacy-Preserving Data Mining
- Principal Investigator
  
  SAKURAI Kouichi
- Project Period (FY)
  2008 – 2010
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Fundamental theory of informatics
- Research Institution
  Kyushu University
Research on density theorems and invariants with zeta functions and trace formulasPrincipal Investigator
- Principal Investigator
  
  HASHIMOTO Yasufumi
- Project Period (FY)
  2008 – 2010
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Algebra
- Research Institution
  Institute of Systems & Information Technologies KYUSHU

[Journal Article] Universality theorems of Selberg zeta functions for arithmetic groups2024
- Author(s)
  Hashimoto Yasufumi
- Journal Title
  
  The Quarterly Journal of Mathematics
  
  Volume: 75 Issue: 1 Pages: 219-238
- DOI
  10.1093/qmath/haae006
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22K03234
[Journal Article] Solving the Problem of Blockwise Isomorphism of Polynomials with Circulant Matrices2023
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E106.A Issue: 3 Pages: 185-192
- DOI
  10.1587/transfun.2022CIP0002
- ISSN
  0916-8508, 1745-1337
- Year and Date
  2023-03-01
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05181, KAKENHI-PROJECT-22K03234
[Journal Article] Square integrals of the logarithmic derivatives of Selberg’s zeta functions in the critical strip2023
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  International Journal of Number Theor
  
  Volume: 19 Issue: 04 Pages: 747-756
- DOI
  10.1142/s1793042123500379
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05181, KAKENHI-PROJECT-22K03234
[Journal Article] An improvement of algorithms to solve under-defined systems of multivariate quadratic equations2023
- Author(s)
  Hashimoto Yasufumi
- Journal Title
  
  JSIAM Letters
  
  Volume: 15 Issue: 0 Pages: 53-56
- DOI
  10.14495/jsiaml.15.53
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-22K03234
[Journal Article] Key recovery attack on Hufu-UOV2022
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  JSIAM Letters
  
  Volume: 14 Issue: 0 Pages: 1-4
- DOI
  10.14495/jsiaml.14.1
- NAID
  130008145019
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-22K03234, KAKENHI-PROJECT-17K05181
[Journal Article] Solving the Problem of Blockwise Isomorphism of Polynomials with Circulant Matrices2021
- Author(s)
  Hashimoto Yasufumi
- Journal Title
  
  Springer LNCS
  
  Volume: 12835 Pages: 137-150
- DOI
  10.1007/978-3-030-85987-9_8
- ISBN
  9783030859862, 9783030859879
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Selberg's zeta function for the modular group in the critical strip2021
- Author(s)
  Hashimoto Yasufumi
- Journal Title
  
  Mathematische Nachrichten
  
  Volume: 294 Issue: 10 Pages: 1899-1904
- DOI
  10.1002/mana.202000268
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Vulnerability of Diene-Thabet-Yusuf's cubic multivariate signature scheme,2021
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  Ryukyu Mathematical Journal
  
  Volume: 34 Pages: 1-5
- NAID
  120007182128
- Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Selberg's zeta function for the modular group in the critical strip2021
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  Mathematische Nachrichten
  
  Volume: 未定
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Recent Developments in Multivariate Public Key Cryptosystems2020
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  International Symposium on Mathematics, Quantum Theory, and Cryptography
  
  Volume: - Pages: 209-229
- DOI
  10.1007/978-981-15-5191-8_16
- ISBN
  9789811551901, 9789811551918
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Key recovery attack on Circulant UOV/Rainbow2019
- Author(s)
  Y. Hashimoto
- Journal Title
  
  JSIAM Letters
  
  Volume: 11 Issue: 0 Pages: 45-48
- DOI
  10.14495/jsiaml.11.45
- NAID
  130007696300
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Chosen Message Attack on Multivariate Signature ELSA at Asiacrypt 20172019
- Author(s)
  Y. Hashimoto, Y. Ikematsu, T. Takagi
- Journal Title
  
  Journal of Information Processing
  
  Volume: 27 Issue: 0 Pages: 517-524
- DOI
  10.2197/ipsjjip.27.517
- NAID
  130007706936
- ISSN
  1882-6652
- Language
  Japanese
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Asymptotic behaviors of class number sums associated with Pell-type equations2019
- Author(s)
  Y. Hashimoto
- Journal Title
  
  Mathematische Zeitschrift
  
  Volume: 292 Issue: 1-2 Pages: 641-654
- DOI
  10.1007/s00209-018-2139-5
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Recent developments in multivariate public key cryptosystems2019
- Author(s)
  Y. Hashimoto
- Journal Title
  
  MI Lecture Notes
  
  Volume: 81 Pages: 187-205
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Chosen Message Attack on Multivariate Signature ELSA at Asiacrypt 20172019
- Author(s)
  Y. Hashimoto, Y. Ikematsu, T. Takagi
- Journal Title
  
  IPSJ Journal
  
  Volume: 印刷中
- NAID
  130007706936
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] High-rank attack on HMFEv2018
- Author(s)
  Y. Hashimoto
- Journal Title
  
  JSIAM Letters
  
  Volume: 10 Issue: 0 Pages: 21-24
- DOI
  10.14495/jsiaml.10.21
- NAID
  130007404541
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Chosen Message Attack on Multivariate Signature ELSA at Asiacrypt 20172018
- Author(s)
  Y. Hashimoto, Y. Ikematsu, T. Takagi
- Journal Title
  
  Springer LNCS
  
  Volume: 11049 Pages: 3-18
- DOI
  10.1007/978-3-319-97916-8_1
- NAID
  130007706936
- ISBN
  9783319979151, 9783319979168
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] On the security of Zhang-Tan's variants of multivariate signature schemes2018
- Author(s)
  Y. Hashimoto
- Journal Title
  
  Ryukyu Mathematical Journal
  
  Volume: 31 Pages: 1-5
- Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Key Recovery Attacks on Multivariate Public Key Cryptosystems Derived from Quadratic Forms over an Extension Field2017
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E100.A Issue: 1 Pages: 18-25
- DOI
  10.1587/transfun.E100.A.18
- NAID
  130005180815
- ISSN
  0916-8508, 1745-1337
- Language
  English
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800020, KAKENHI-PROJECT-17K05181
[Journal Article] Chosen ciphertext attack on ZHFE2017
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  JSIAM Letters
  
  Volume: 9 Issue: 0 Pages: 21-24
- DOI
  10.14495/jsiaml.9.21
- NAID
  130005540822
- ISSN
  1883-0609, 1883-0617
- Language
  English
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26800020, KAKENHI-PROJECT-17K05181
[Journal Article] Weaknesses of cubic UOV and its variants2017
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  Ryukyu mathematical journal
  
  Volume: 30 Pages: 1-7
- NAID
  120006378227
- Open Access
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Multivariate public key cryptosystems2017
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  Mathematical Modelling for Next-Generation Cryptography
  
  Volume: 1 Pages: 17-42
- DOI
  10.1007/978-981-10-5065-7_2
- ISBN
  9789811050640, 9789811050657
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05181
[Journal Article] Cryptanalysis of the Multivariate Signature Scheme Proposed in PQCrypto 20132016
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E99.A Issue: 1 Pages: 58-65
- DOI
  10.1587/transfun.E99.A.58
- NAID
  130005115261
- ISSN
  0916-8508, 1745-1337
- Language
  English
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800020
[Journal Article] 合同部分群に関するlength spectrumの重複度について2016
- Author(s)
  橋本康史
- Journal Title
  
  数理解析研究所講究録
  
  Volume: 2013 Pages: 100-109
- NAID
  130008004926
- Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800020
[Journal Article] 合同部分群に関するlength spectrum の重複度について2016
- Author(s)
  橋本康史
- Journal Title
  
  数理解析研究所講究録
  
  Volume: 未定
- NAID
  130008004926
- Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800020
[Journal Article] Cryptanalysis of the quaternion Rainbow2015
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
  
  Volume: 98-A Pages: 144-152
- DOI
  10.1007/978-3-642-41383-4_16
- NAID
  130004770900
- ISBN
  9783642413827, 9783642413834
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800020
[Journal Article] Cryptanalysis of the multivariate sigature scheme proposed in PQCrypto 20132014
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  Springer Lecture Notes in Computer Science
  
  Volume: 8772 Pages: 108-125
- DOI
  10.1007/978-3-319-11659-4_7
- ISBN
  9783319116587, 9783319116594
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800020
[Journal Article] A polynomial-time algorithm for solving a class of underdetermined multivariate quadratic equations2014
- Author(s)
  C.-M. Cheng, Y. Hashimoto, H. Miura, and T. Takagi
- Journal Title
  
  6th International Workshop on Post-Quantum Cryptography, PQCrypto 2014
  
  Volume: LNCS 8772 Pages: 40-58
- DOI
  10.1007/978-3-319-11659-4_3
- ISBN
  9783319116587, 9783319116594
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-13F03346, KAKENHI-PROJECT-25540047, KAKENHI-PROJECT-26800020
[Journal Article] Algorithms to solve massively under-defined systems of multivariate quadratic equations2011
- Author(s)
  Y.Hashimoto
- Journal Title
  
  IEICE Trans.Fundamentals
  
  Volume: E94-A(未定)
- NAID
  10029802211
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] On small secret key attack against RSA with high bits known prime factors2010
- Author(s)
  Y.Hashimoto
- Journal Title
  
  Proceedings (short papers) of 5th International Workshop on Security (IWSEC2010)
  
  Pages: 14-25
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] 合同部分群に関するlength spectrumの重複度について2010
- Author(s)
  橋本康史
- Journal Title
  
  2010年度表現論シンポジウム講演集
  
  Pages: 66-81
- NAID
  130008004926
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Algorithms to solve massively under-defined systems of multivariate quadratic equations2010
- Author(s)
  Y.Hashimoto
- Journal Title
  
  Proceedings (Industrial Track) of the 8th International Conference on Applied Cryptography and Network Security
  
  Pages: 26-37
- NAID
  10029802211
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Partial zeta functions2010
- Author(s)
  Y.Hashimoto
- Journal Title
  
  Archiv der Mathematik 95
  
  Pages: 363-372
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] On small secret key attack against RSA with high bits known prime factors2010
- Author(s)
  Y.Hashimoto
- Journal Title
  
  Proceedings (short papers) of 5th International Workshop on Security
  
  Pages: 14-25
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Partial zeta functions2010
- Author(s)
  Y.Hashimoto
- Journal Title
  
  Archiv der Mathematik
  
  Volume: 95 Pages: 363-372
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] On asymptotic behavior of composite integers n=qp2009
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  J. Math-for-Industry 1
  
  Pages: 45-49
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Prime and zero distributions for meromorphic Euler products2009
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  5th Asian Mathematical Conference Proceedings 1
  
  Pages: 255-261
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] On asymptotic behavior of composite integers n=pq2009
- Author(s)
  Y.Hashimoto
- Journal Title
  
  J.Math-for- Industry 1
  
  Pages: 45-49
- NAID
  120001177117
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Prime and zero distributions for meromorphic Euler products2009
- Author(s)
  Y.Hashimoto
- Journal Title
  
  5th Asian Mathematical Conference Proceedings 1
  
  Pages: 255-261
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Distributions of multiplicities in length spectra for hyperbolic Riemann surfaces2008
- Author(s)
  Yasufumi Hashimoto
- Journal Title
  
  Complex Analysis and its Applications, OCAMI Studies 2
  
  Pages: 195-199
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Analytic properties of partial zeta functions2008
- Author(s)
  Y.Hashimoto
- Journal Title
  
  RIMS Kokyuroku Bessatsu B-7
  
  Pages: 73-82
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] 部分ゼータ関数の解析性2008
- Author(s)
  橋本康史
- Journal Title
  
  数理解析研究所講究録別冊 B-7
  
  Pages: 73-82
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Distributions of multiplicities in length spectra for hyperbolic Riemann surfaces2008
- Author(s)
  Y.Hashimoto
- Journal Title
  
  OCAMI Studies 2-2
  
  Pages: 195-199
- Data Source
  KAKENHI-PROJECT-20740027
[Journal Article] Distributions of length multiplicities for Riemann surfaces
- Author(s)
  Y.Hashimoto
- Journal Title
  
  RIMS Kokyuroku Bessatsu
  
  Volume: (未定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 有限体上の under-defined な多変数連立２次方程式の解法について2023
- Author(s)
  橋本康史
- 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-22K03234
[Presentation] 有限体上の under-defined な多変数連立２次方程式の解法について2023
- Author(s)
  橋本康史
- 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-17K05181
[Presentation] 有限体上の under-defined な多変数連立2次方程式の解法について2023
- Author(s)
  橋本康史
- 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-22K03234
[Presentation] セルバーグゼータ関数に関する普遍性定理2023
- Author(s)
  橋本康史
- Organizer
  2023年度日本数学会年会代数学分科会
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] On the spectral exponential sums for compact Riemann surfaces2023
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2023
- Data Source
  KAKENHI-PROJECT-22K03234
[Presentation] 有限体上の under-defined な多変数連立２次方程式の解法について2023
- Author(s)
  橋本康史
- Organizer
  Crestクリプトマス 2023年度第2回全体会議
- Data Source
  KAKENHI-PROJECT-22K03234
[Presentation] セルバーグゼータ関数に関する普遍性定理2023
- Author(s)
  橋本康史
- Organizer
  2023年度日本数学会年会代数学分科会
- Data Source
  KAKENHI-PROJECT-22K03234
[Presentation] Universality of the Selberg zeta function2022
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2022
- Data Source
  KAKENHI-PROJECT-22K03234
[Presentation] Simple matrix signature scheme の安全性について2022
- Author(s)
  橋本康史
- 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-22K03234
[Presentation] Universality of the Selberg zeta function2022
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2022
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Simple matrix signature scheme の安全性について2022
- Author(s)
  橋本康史
- 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-17K05181
[Presentation] セルバーグゼータ関数の臨界領域における２乗積分について2021
- Author(s)
  橋本康史
- Organizer
  2021年度日本数学会秋季総合分科会
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Solving the problem of Blockwise Isomorphism of Polynomials with Circulant matrice2021
- Author(s)
  Yasufumi Hashimoto
- Organizer
  16th International Workshop on Security (IWSEC2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Hufu-UOVの安全性について2021
- Author(s)
  橋本康史
- Organizer
  日本応用数理学会年会第17回研究部会連合発表会
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] モジュラー群に関するセルバーグゼータ関数の臨界領域での値について2020
- Author(s)
  橋本康史
- Organizer
  2020年度日本数学会秋季総合分科会代数学分科会
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Diene-Thabet-Yusuf の3次多変数署名方式の安全性について2020
- Author(s)
  橋本康史
- Organizer
  2020年度日本応用数理学会年会
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] An error term estimation of the prime geodesic theorem for the modular group2019
- Author(s)
  Y. Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2019
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Recent developments in multivariate public key cryptosystems2019
- Author(s)
  Y. Hashimoto
- Organizer
  International Symposium on Mathematics, Quantum Theory, and Cryptography
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] A survey on multivariate public key cryptosystem2018
- Author(s)
  橋本康史
- Organizer
  代数的手法による数理暗号解析
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] A survey on Multivariate Public key Cryptosystem2018
- Author(s)
  橋本康史
- Organizer
  代数的手法による数理暗号解析
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Chosen Message Attack on Multivariate Signature ELSA at Asiacrypt 20172018
- Author(s)
  Y. Hashimoto, Y. Ikematsu, T. Takagi
- Organizer
  The 13th International Workshop on Security (IWSEC 2018)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Circulant UOV/Rainbow の安全性について2018
- Author(s)
  橋本康史
- Organizer
  2018年度日本応用数理学会年会
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] On multiplicities of eigenvalues of Laplacians on hyperbolic surfaces2018
- Author(s)
  Y. Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2018
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] 多変数多項式暗号の暗号化の効率化2018
- Author(s)
  橋本康史
- Organizer
  2018年度暗号と情報セキュリティシンポジウム
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] Multiplicities in length spectra for congruence subgroups2017
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta functions and trace formulas in Fukuoka
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] 拡大体型多変数多項式暗号に対するランク攻撃2017
- Author(s)
  橋本康史
- Organizer
  CREST暗号数理平成29年度第2回全体会議
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] 合同部分群に関するlength spectrum の重複度の分布について2017
- Author(s)
  橋本康史
- Organizer
  2017年度日本数学会年会函数解析学分科会　特別講演
- Place of Presentation
  首都大学東京（東京都八王子市）
- Year and Date
  2017-03-24
- Invited
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] Multiplicities in length spectra for non-compact arithmetic surfaces2017
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2017
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] HMFEv の安全性について2017
- Author(s)
  橋本康史
- Organizer
  日本応用数理学会2017年度年会
- Data Source
  KAKENHI-PROJECT-17K05181
[Presentation] 多変数多項式暗号の暗号化速度の改良2017
- Author(s)
  橋本康史
- Organizer
  2017年度暗号と情報セキュリティシンポジウム
- Place of Presentation
  ロワジールホテル那覇（沖縄県那覇市）
- Year and Date
  2017-01-24
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] On values of Selberg's zeta functions for the modular group2016
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2016
- Place of Presentation
  沖縄コンベンションセンター（沖縄県宜野湾市）
- Year and Date
  2016-10-29
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] ZHFEに対する選択暗号文攻撃2016
- Author(s)
  橋本康史
- Organizer
  2016年度日本応用数理学会年会
- Place of Presentation
  北九州国際会議場（福岡県北九州市）
- Year and Date
  2016-09-12
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] 多層なRainbowの安全性について2016
- Author(s)
  橋本康史
- Organizer
  2016年度暗号と情報セキュリティシンポジウム
- Place of Presentation
  ANAクラウンプラザホテル熊本ニュースカイ
- Year and Date
  2016-01-19
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] 合同部分群に関するセルバーグゼータ関数の値の評価2016
- Author(s)
  橋本康史
- Organizer
  研究集会「表現論がつなぐ数学2016」
- Place of Presentation
  沖縄県男女共同参画センター「てぃるる」（沖縄県那覇市）
- Year and Date
  2016-09-09
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] On the security of ZHFE2016
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Fukuoka Workshop on Multivariate Cryptography
- Place of Presentation
  九州大学
- Year and Date
  2016-03-25
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] 拡大体型の多変数連立2次方程式暗号の安全性について2015
- Author(s)
  橋本康史
- Organizer
  研究集会「表現論がつなぐ数学2015」
- Place of Presentation
  JR九州ホテル鹿児島
- Year and Date
  2015-09-17
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] Estimations of Selberg's zeta functions for congruence subgroups2015
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2015
- Place of Presentation
  沖縄コンベンションセンター
- Year and Date
  2015-10-10
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] 多変数版HFEの安全性について2015
- Author(s)
  橋本康史
- Organizer
  2015年度日本応用数理学会年会
- Place of Presentation
  金沢大学
- Year and Date
  2015-09-09
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] 素因子の上位ビットが既知で秘密鍵が小さいRSA に対する攻撃法について2014
- Author(s)
  橋本康史
- Organizer
  首都大整数論セミナー
- Place of Presentation
  首都大東京
- Year and Date
  2014-11-14
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] 合同部分群に関するlength spectrumの重複度について2011
- Author(s)
  橋本康史
- Organizer
  2011年度日本数学会年会函数論分科会
- Place of Presentation
  早稲田大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 多変数暗号に対する故障利用攻撃について2011
- Author(s)
  橋本康史, 高木剛, 櫻井幸一
- Organizer
  2011暗号と情報セキュリティシンポジウム
- Place of Presentation
  福岡
- Year and Date
  2011-01-27
- Data Source
  KAKENHI-PROJECT-20300005
[Presentation] 多変数暗号に関する故障利用攻撃について2011
- Author(s)
  橋本康史・高木剛
- Organizer
  2011年度暗号と情報セキュリティシンポジウム
- Place of Presentation
  福岡県北九州市
- Year and Date
  2011-01-27
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 多変数暗号に関する故障利用攻撃について2011
- Author(s)
  橋本康史, 高木剛
- Organizer
  2011年度暗号と情報セキュリティシンポジウム
- Place of Presentation
  リーガロイヤルホテル小倉(福岡県北九州市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] Algorithms to solve massively under-defined systems of multivariate quadratic equations2010
- Author(s)
  Y.Hashimoto
- Organizer
  Industrial Track in 8th International Conference on Applied Cryptography and Network Security
- Place of Presentation
  北京工大建国飯店(中国北京市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] On multiplicities in length spectra for congruence subgroups2010
- Author(s)
  Y.Hashimoto
- Organizer
  Zetas and Limit Laws in OKINAWA 2010
- Place of Presentation
  沖縄コンベンションセンター(沖縄県宜野湾市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] On small secret key attack against RSA with high bits known prime factors2010
- Author(s)
  Y.Hashimoto
- Organizer
  5th International Workshop on Security (IWSEC2010)
- Place of Presentation
  神戸国際会議場(兵庫県神戸市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] Algorithms to solve massively under-defined systems of multivariate quadratic equations2010
- Author(s)
  Y.Hashimoto
- Organizer
  Industrial Track in 8th International Conference on Applied Cryptography and Network Security
- Place of Presentation
  中国北京市
- Year and Date
  2010-06-24
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 素因子の上位ビットが既知で秘密鍵が小さいRSA に対する攻撃法について2010
- Author(s)
  橋本康史
- Organizer
  2010年度暗号と情報セキュリティシンポジウム
- Place of Presentation
  サンポートホール高松(香川県高松市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] On multiplicities in length spectra for congruence subgroups2010
- Author(s)
  橋本康史
- Organizer
  Zetas and Limit Laws in OKINAWA 2010
- Place of Presentation
  沖縄県宜野湾市
- Year and Date
  2010-11-06
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] On small secret key attack against RSA with high bits known prime factors2010
- Author(s)
  Y.Hashimoto
- Organizer
  5th International Workshop on Security (IWSEC2010)
- Place of Presentation
  兵庫県神戸市
- Year and Date
  2010-11-23
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数和に関する漸近公式2010
- Author(s)
  橋本康史
- Organizer
  大阪大学整数論・保型形式セミナー
- Place of Presentation
  大阪大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数和に関する漸近公式2010
- Author(s)
  橋本康史
- Organizer
  第9回仙台広島整数論集会
- Place of Presentation
  東北大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数和に関する漸近公式について2010
- Author(s)
  橋本康史
- Organizer
  2010年度日本数学会年会代数学分科会
- Place of Presentation
  慶應義塾大学
- Year and Date
  2010-03-26
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 合同部分群に関するlengthspectrumの重複度について2010
- Author(s)
  橋本康史
- Organizer
  2010年度表現論シンポジウム
- Place of Presentation
  おおとり荘(静岡県伊豆の国市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 素因子の上位ビットが既知で秘密鍵が小さいRSAに対する攻撃法について2010
- Author(s)
  橋本康史
- Organizer
  2010年度暗号と情報セキュリティシンポジウム
- Place of Presentation
  香川県高松市
- Year and Date
  2010-01-19
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数和に関する漸近公式2010
- Author(s)
  橋本康史
- Organizer
  研究集会「表現論がつなぐ数論・解析学・組合せ論」
- Place of Presentation
  愛媛大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 合同部分群に関するlength spectrumの重複度について2010
- Author(s)
  橋本康史
- Organizer
  2010年度表現論シンポジウム
- Place of Presentation
  静岡県伊豆の国市
- Year and Date
  2010-11-10
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数和に関する漸近公式について2010
- Author(s)
  橋本康史
- Organizer
  第15回代数学若手研究会
- Place of Presentation
  名古屋大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数和に関する漸近公式について2010
- Author(s)
  橋本康史
- Organizer
  2010年度日本数学会年会代数学分科会
- Place of Presentation
  慶応義塾大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 変数の個数が方程式の個数よりも十分大きい多変数連立二次方程式の解法について2009
- Author(s)
  橋本康史
- Organizer
  2009年度暗号と情報セキュリティシンポジウム
- Place of Presentation
  大津プリンスホテル(滋賀県大津市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] Asymptotic formulas of class number sums in arithmetic progressions for indefinite binary quadratic forms2009
- Author(s)
  Y.Hashimoto
- Organizer
  Zetas and Limit Laws in OKINAWA 2009
- Place of Presentation
  フェストーネ(沖縄県宜野湾市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] Asymptotic formulas of class number sums in arithmetic progressions for indefinite binary quadratic forms2009
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zetas and Limit Laws in OH-NAWA 2009
- Place of Presentation
  沖縄県宜野湾市
- Year and Date
  2009-11-15
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 変数の個数が方程式の個数よりも十分大きい多変数連立二次方程式の解法について2009
- Author(s)
  橋本康史
- Organizer
  ワークショップ「安全な社会基盤への計算量的数論の応用-次世代暗号技術の最先端理論より-
- Place of Presentation
  九州大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] Prime and zero distributions for meromorphic Euler products2009
- Author(s)
  Y.Hashimoto
- Organizer
  5th Asian Mathematical Conference
- Place of Presentation
  Putra World Trade Centre(マレーシア,クアラルンプール市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] Prime and zero distributions for meromorphic Euler products2009
- Author(s)
  Yasufumi Hashimoto
- Organizer
  5th Asian Mathematical Conference
- Place of Presentation
  マレーシア・クアラルンプール市
- Year and Date
  2009-06-25
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] オイラー積で表される有理型なゼータ関数の素元分布と零点分布について2009
- Author(s)
  橋本康史
- Organizer
  研究集会「表現論がつなぐ数学」
- Place of Presentation
  ホテルロコアナハ(沖縄県那覇市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数の部分和に関する漸近公式について2009
- Author(s)
  橋本康史
- Organizer
  2008年度日本数学会代数学分科会
- Place of Presentation
  東京工業大学(東京都目黒区)
- Year and Date
  2009-09-27
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] 不定値二元二次形式の類数の部分和に関する漸近公式について2008
- Author(s)
  橋本康史
- Organizer
  2008年度日本数学会年会代数学分科会
- Place of Presentation
  東京工業大学
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] n=pq型の合成数の分布について2008
- Author(s)
  橋本康史
- Organizer
  Zetas and Limit Laws in OKINAWA 2008
- Place of Presentation
  沖縄コンベンションセンター(沖縄県宜野湾市)
- Data Source
  KAKENHI-PROJECT-20740027
[Presentation] A polynomial-time algorithm for solving a class of underdetermined multivariate quadratic equations over fields of odd characteristics
- Author(s)
  C.M. Cheng, Y. Hashimoto, H. Miura, T. Takagi
- Organizer
  Sixth International Conference on Post-Quantum Cryptography
- Place of Presentation
  Waterloo University
- Year and Date
  2014-10-01 – 2014-10-03
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] Cryptanalysis of the multivariate sigature scheme proposed in PQCrypto 201
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Sixth International Conference on Post-Quantum Cryptography
- Place of Presentation
  Waterloo University
- Year and Date
  2014-10-01 – 2014-10-03
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] 合同部分群に関するlength spectrum の重複度について
- Author(s)
  橋本康史
- Organizer
  RIMS 研究集会「解析的整数論― 数論的対象の分布と近似」
- Place of Presentation
  京都大学
- Year and Date
  2014-10-29 – 2014-10-31
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] On the values of Selberg’s zeta functions for congruence subgroups
- Author(s)
  Yasufumi Hashimoto
- Organizer
  Zeta Functions in OKINAWA 2014
- Place of Presentation
  沖縄コンベンションセンター
- Year and Date
  2014-10-25 – 2014-10-28
- Data Source
  KAKENHI-PROJECT-26800020
[Presentation] Pell 型の方程式t^2 -Du^2 = 4N が可解な判別式に関する類数和について
- Author(s)
  橋本康史
- Organizer
  研究集会「2014 表現論がつなぐ数学」
- Place of Presentation
  サンポートホール高松
- Year and Date
  2014-09-28 – 2014-09-29
- Data Source
  KAKENHI-PROJECT-26800020

1. SAKURAI Kouichi (60264066)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
2. HORI Yoshiaki (90264126)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. TAKAHASHI Kenichi (30399670)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. NISHIDE Takashi (70570985)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. ARARAGI Tadashi (00396136)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. SU Chunhua

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. CHENG Mou-chen

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
8. CHENG Chen-Mou

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
9. 高木剛

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Hashimoto Yasufumi 橋本 康史

HASHIMOTO Yasufumi 橋本 康史

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数論的な双曲多様体上のセルバーグゼータ関数の研究Principal Investigator

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双曲多様体上の素測地線分布とセルバーグゼータ関数の研究Principal Investigator

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Research on distributions of prime geodesics and spectrum using trace formula and zeta functionsPrincipal Investigator

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Research on distributions of prime geodesics and spectra of Laplacians on hyperbolic manifoldsPrincipal Investigator

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Design and Security Analysis of Cryptographic Protocol for Privacy-Preserving Data Mining

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Research on density theorems and invariants with zeta functions and trace formulasPrincipal Investigator

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[Journal Article] Universality theorems of Selberg zeta functions for arithmetic groups2024

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[Journal Article] Solving the Problem of Blockwise Isomorphism of Polynomials with Circulant Matrices2023

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[Journal Article] Square integrals of the logarithmic derivatives of Selberg’s zeta functions in the critical strip2023

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[Journal Article] An improvement of algorithms to solve under-defined systems of multivariate quadratic equations2023

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[Journal Article] Key recovery attack on Hufu-UOV2022

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[Journal Article] Solving the Problem of Blockwise Isomorphism of Polynomials with Circulant Matrices2021

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Hashimoto Yasufumi 橋本康史

HASHIMOTO Yasufumi 橋本康史