SHIZUYA Hiroki 静谷啓樹

… Alternative Names

Shizuya Hiroki 静谷啓樹

静谷啓樹シズヤヒロキ

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Researcher Number	50196383
Other IDs
External Links
Affiliation (Current)	2025: 東北大学, 高度教養教育・学生支援機構, 総長特命教授
Affiliation (based on the past Project Information) *help	2019 – 2022: 東北大学, データ駆動科学・AI教育研究センター, 教授 2014 – 2017: 東北大学, 教育情報基盤センター, 教授 2009 – 2011: Tohoku University, 教育情報基盤センター, 教授 2005 – 2007: 東北大学, 高等教育開発推進センター, 教授 2001: TOHOKU Univ., Information Synergy Center, Prof., 情報シナジーセンター, 教授 … More 1998 – 2000: 東北大学, 情報処理教育センター, 教授 1996: 東北大学, 情報処理教育センター, 教授 1994: 東北大学, 情報処理教育センター, 助教授 Less
Review Section/Research Field	Principal Investigator 計算機科学 / Basic Section 60070:Information security-related / Information security / Fundamental theory of informatics Except Principal Investigator Social systems engineering/Safety system / 計算機科学 / Humanities and Social Sciences
Keywords	Principal Investigator 離散対数問題 / 一方向性関数 / 素因数分解問題 / 暗号化関数 / 計算量理論 / 暗号理論 / 計算量的リフティング / 分解問題 / 耐量子暗号 / 有限非可換群 … More / 耐量子問題 / bounded arithmetic / integer factoring / discrete logarithm / semantic security / reducibility / one-way function / encryption function / ハードコア述語 / 限定算術 / 強秘匿性 / 帰着 / 楕円曲線 / 不動点 / 暗号か関数 / NP完全 / NPMV完全 / 量子計算機 / 鍵配送方式 / 情報セキュリティ / 解読アルゴリズム … More Except Principal Investigator ISO 15693 / RFID / SECURITY / RADIO FREQUENCY / MOBILE PHONE / AUTHENTIFICATION / ENDODONTIC THERAPY / STEALTH / 非接触 / セキュリティ / 生体親和性 / 再生医療 / メンブレン / ステルス認証 / 埋込み / 生体埋め込み / 口腔 / 歯 / 本人確認 / ICタグ / 社会安全 / 短波領域 / 携帯電話 / 個人認証 / 歯内療法 / ステルス / fast computation / elliptic curve / cryptanalysis / algorithm / public-key encryption / hyperelliptic curve / information security / cryptography / 梗塞演算 / モンゴメリー型 / 高速演算 / 楕円暗号 / 暗号解読 / アルゴリズム / 公開鍵暗号 / 超楕円曲線 / 情報セキュリティ / 暗号 / 教材 / CD-ROM / マルチメディア Less

A Search for Quantum-resistant Problems over Finite Noncommutative GroupPrincipal Investigator
- Principal Investigator
  
  SHIZUYA Hiroki
- Project Period (FY)
  2019 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 60070:Information security-related
- Research Institution
  Tohoku University
Constructing a theory of fixed points assciated with one-way functionsPrincipal Investigator
- Principal Investigator
  
  Shizuya Hiroki
- Project Period (FY)
  2014 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Information security
- Research Institution
  Tohoku University
Constructing encryption functions secure against quantum computingPrincipal Investigator
- Principal Investigator
  
  SHIZUYA Hiroki
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Fundamental theory of informatics
- Research Institution
  Tohoku University
STEALTHAUTHENTIFICATION USING RANGE OF RADIO FREQUENCY TRANSPONDER IN THE ENDODONTIC SPACE
- Principal Investigator
  
  ISHIHATA Hiroshi
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Social systems engineering/Safety system
- Research Institution
  Tohoku University
マルチメディア教材作成の簡易化と学士課程全学教育への高度利用
- Principal Investigator
  
  斎藤紘一
- Project Period (FY)
  2000
- Research Category
  
  Grant-in-Aid for Scientific Research on Priority Areas (A)
- Review Section
  
  Humanities and Social Sciences
- Research Institution
  Tohoku University
Research on public-key cryptosystems from hyperelliptic-curves
- Principal Investigator
  
  SAKURAI Kouichi
- Project Period (FY)
  1999 – 2001
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  計算機科学
- Research Institution
  Kyushu University
A study on searching for a string without decryptionPrincipal Investigator
- Principal Investigator
  
  SHIZUYA Hiroki
- Project Period (FY)
  1998 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  計算機科学
- Research Institution
  Tohoku University
Diffie-Hellman公開鍵配送方式の安全性の解明Principal Investigator
- Principal Investigator
  
  静谷啓樹
- Project Period (FY)
  1996
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  計算機科学
- Research Institution
  Tohoku University
離散対数問題に基づく暗号系の帰着関係の研究Principal Investigator
- Principal Investigator
  
  静谷啓樹
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for Encouragement of Young Scientists (A)
- Research Field
  
  計算機科学
- Research Institution
  Tohoku University

All 2023 2021 2020 2019 2017 2016 2015 2012 2011 2010 2009 Other

All Journal Article Presentation

[Journal Article] Preimage Sampling in the Higher-bit Approximate Setting With a Non-spherical Gaussian Sample2023
- Author(s)
  Anaelle Le Devehat, Shingo Hasegawa, Hiroki Shizuya
- Journal Title
  
  Lecture Notes in Computer Science
  
  Volume: 13849 Pages: 472-490
- DOI
  10.1007/978-3-031-29371-9_23
- ISBN
  9783031293702, 9783031293719
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K11956
[Journal Article] Public-Key Projective Arithmetic Functional Encryption2021
- Author(s)
  Shingo Hasegawa, Masashi Hisai, Hiroki Shizuya
- Journal Title
  
  International Journal of Networking and Computing
  
  Volume: 11 Issue: 2 Pages: 299-318
- DOI
  10.15803/ijnc.11.2_299
- NAID
  130008063324
- ISSN
  2185-2839, 2185-2847
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K11288, KAKENHI-PROJECT-19K11956
[Journal Article] On a Relation between Knowledge-of-Exponent Assumptions and the DLog vs. CDH Question2021
- Author(s)
  KRAIEM Firas、ISOBE Shuji、KOIZUMI Eisuke、SHIZUYA Hiroki
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E104.A Issue: 1 Pages: 20-24
- DOI
  10.1587/transfun.2020CIP0002
- NAID
  130007964787
- ISSN
  0916-8508, 1745-1337
- Year and Date
  2021-01-01
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K03612, KAKENHI-PROJECT-19K11956
[Journal Article] On the Higher-bit Version of Approximate Inhomogeneous Short Integer Solution Problem2021
- Author(s)
  Anaelle Le Devehat, Hiroki Shizuya, Shingo Hasegawa
- Journal Title
  
  Lecture Notes in Computer Science
  
  Volume: 13099 Pages: 253-272
- DOI
  10.1007/978-3-030-92548-2_14
- ISBN
  9783030925475, 9783030925482
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K11956
[Journal Article] On the Classification of Knowledge-of-exponent Assumptions in Cyclic Groups2019
- Author(s)
  Firas KRAIEM, Shuji ISOBE, Eisuke KOIZUMI, Hiroki SHIZUYA
- Journal Title
  
  IIS
  
  Volume: 25 Issue: 1 Pages: 67-74
- DOI
  10.4036/iis.2019.R.03
- NAID
  130007720020
- ISSN
  1340-9050, 1347-6157
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K03612, KAKENHI-PROJECT-19K11956
[Journal Article] Computational Model of Card-Based Cryptographic Protocols and Its Applications2017
- Author(s)
  Takaaki Mizuki, Hiroki Shizuya
- Journal Title
  
  IEICE Trans. Fundamentals, Special Section on Cryptography and Information Security
  
  Volume: E100-A Pages: 3-11
- NAID
  130005180847
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-26330150
[Journal Article] Computational Model of Card-Based Cryptographic Protocols and Its Applications2017
- Author(s)
  Takaaki Mizuki and Hiroki Shizuya
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E100.A Issue: 1 Pages: 3-11
- DOI
  10.1587/transfun.E100.A.3
- NAID
  130005180847
- ISSN
  0916-8508, 1745-1337
- Language
  English
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26330001, KAKENHI-PROJECT-26330150
[Journal Article] A Rigorous Security Proof for the Enhanced Version of Password-Protected Secret Sharing Scheme2016
- Author(s)
  Shingo Hasegawa, Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Hiroki Shizuya
- Journal Title
  
  Interdisciplinary Information Sciences
  
  Volume: 22 Pages: 1-26
- NAID
  130005281206
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26330150
[Journal Article] A Strengthened Security Notion for Password-Protected Secrete Sharing Schemes2015
- Author(s)
  Shingo Hasegawa, Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Hiroki Shizuya
- Journal Title
  
  IEICE Trans. Fundamentals, Special Section on Cryptography and Information Security
  
  Volume: E98-A Pages: 203-212
- NAID
  130004770895
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-26330150
[Journal Article] 情報セキュリティ教育の輪郭線2012
- Author(s)
  静谷啓樹
- Journal Title
  
  情報リテラシー研究論叢
  
  Volume: 1 Pages: 72-83
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21500002
[Journal Article] On the Pseudo-Freeness and the CDH Assumption2009
- Author(s)
  Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya
- Journal Title
  
  International Journal of Information Security
  
  Volume: 8 Pages: 347-355
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21500002
[Journal Article] On the complexity of computing discrete logarithms over algebraic tori2009
- Author(s)
  Shuji Isobe, Eisuke Koizumi, Yuji Nishigaki, Hiroki Shizuya
- Journal Title
  
  Lecture Notes in Computer Science 5888
  
  Pages: 433-442
- NAID
  130003394859
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21500002
[Journal Article] On the Pseudo-Freeness and the CDH Assumption2009
- Author(s)
  Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya, Katsuhiro Tashiro
- Journal Title
  
  International Journal of Information Security 8
  
  Pages: 347-355
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21500002
[Journal Article] On the Complexity of Computing Discrete Logarithms over Algebraic Tori2009
- Author(s)
  Shuji Isobe, Eisuke Koizumi, Yuji Nishigaki, Hiroki Shizuya
- Journal Title
  
  Lecture Notes in Computer Science
  
  Volume: 5888 Pages: 433-442
- NAID
  130003394859
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] How to Implement a Non-uniform or Non-closed Shuffle2020
- Author(s)
  Takahiro Saito, Daiki Miyahara, Yuta Abe, Takaaki Mizuki, Hiroki Shizuya
- Organizer
  9th International Conference on the Theory and Practice of Natural Computing (TPNC 2020), LNCS 12494, pp.107-118
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K11956
[Presentation] Public-key Projective Arithmetic Functional Encryption2020
- Author(s)
  Shingo Hasegawa, Masashi Hisai, Hiroki Shizuya
- Organizer
  2020 Eighth International Symposium on Computing and Networking (CANDAR)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19K11956
[Presentation] On a relation between knowledge-of-exponent assumptions and the DLog vs. CDH question2020
- Author(s)
  Firas Kraiem, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya
- Organizer
  2020 Symposium on Cryptography and Information Security
- Data Source
  KAKENHI-PROJECT-19K11956
[Presentation] A Construction of Attribute-based Aggregate Signatures2016
- Author(s)
  Shingo Hasegawa, Shuji Isobe, Eisuke Koizumi, Hiroki Shizuya, Ryo Takahashi
- Organizer
  2016 International Symposium on Information Theory and Its Applications (ISITA 2016)
- Place of Presentation
  Monterey, California, USA
- Year and Date
  2016-10-30
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26330150
[Presentation] 環準同型性を持つ公開鍵暗号の一構成2012
- Author(s)
  高橋大樹, 千田栄幸, 静谷啓樹
- Organizer
  2012年暗号と情報セキュリティシポジウム(SCIS2012 3D2-4)
- Place of Presentation
  石川県金沢市(金沢エクセルホテル東急)
- Year and Date
  2012-02-01
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] SLPに基づく強RSA仮定とDDH仮定の分離2011
- Author(s)
  福光正幸, 長谷川真吾, 磯辺秀司, 小泉英介, 静谷啓樹
- Organizer
  電子情報通信学会情報セキュリティ研究会(電子情報通信学会技術研究報告ISEC2011-55)
- Place of Presentation
  大阪府寝屋川市(大阪電気通信大学)
- Year and Date
  2011-11-15
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] 多価関数における自己帰着とmany-one型帰着について2011
- Author(s)
  許智元, 磯辺秀司, 小泉英介, 静谷啓樹
- Organizer
  電子情報通信学会情報セキュリティ研究会
- Place of Presentation
  吹田市(大阪大学)
- Year and Date
  2011-03-04
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] On the Relationship between Recognizing Languages and Computing Functions2011
- Author(s)
  Shingo Hasegawa, Shuji Isobe, Hiroki Shizuya
- Organizer
  電子情報通信学会2011年暗号と情報セキュリティシンポジウム(SCIS2011)
- Place of Presentation
  北九州市(リーガロイヤルホテル小倉)
- Year and Date
  2011-01-25
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] 情報の漏れを許容する知識の対話証明2011
- Author(s)
  岩崎淳也, 長谷川真吾, 磯辺秀司, 小泉英介, 静谷啓樹
- Organizer
  電子情報通信学会情報セキュリティ研究会(電子情報通信学会技術研究報告ISEC2011-56)
- Place of Presentation
  大阪府寝屋川市(大阪電気通信大学)
- Year and Date
  2011-11-15
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] SLPを用いた帰着に基づく暗号学的仮定の分離2011
- Author(s)
  福光正幸, 長谷川真吾, 磯辺秀司, 小泉英介, 静谷啓樹
- Organizer
  電子情報通信学会2011年暗号と情報セキュリティシンポジウム(SCIS2011)
- Place of Presentation
  北九州市(リーガロイヤルホテル小倉)
- Year and Date
  2011-01-25
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] 言語認識の複雑さと関数計算の複雑さの関係2010
- Author(s)
  長谷川真吾, 磯辺秀司, 静谷啓樹
- Organizer
  電子情報通信学会情報セキュリティ研究会
- Place of Presentation
  弘前市(弘前大学)
- Year and Date
  2010-07-02
- Data Source
  KAKENHI-PROJECT-21500002
[Presentation] Password-protected Secret-sharing Schemes without Random Oracles
- Author(s)
  Shingo Hasegawa, Shuji Isobe, Jun-ya Iwazaki, Eisuke Koizumi, Hiroki Shizuya
- Organizer
  Proc. 2014 International Symposium on Information Theory and Its Applications (ISITA 2014)
- Place of Presentation
  Melbourne Convention and Exhibition Center (South Wharf, VIC, Australia)
- Year and Date
  2014-10-26 – 2014-10-29
- Data Source
  KAKENHI-PROJECT-26330150
[Presentation] 準同型暗号の安全性証明の限界について
- Author(s)
  高橋大樹，長谷川真吾，磯辺秀司，小泉英介，静谷啓樹
- Organizer
  電子情報通信学会情報セキュリティ研究会
- Place of Presentation
  北九州市立大学国際環境工学部ひびきのキャンパス（北九州市若松区）
- Year and Date
  2015-03-02 – 2015-03-03
- Data Source
  KAKENHI-PROJECT-26330150
[Presentation] 属性ベース集約署名の一構成
- Author(s)
  高橋遼，長谷川真吾，磯辺秀司，小泉英介，静谷啓樹
- Organizer
  電子情報通信学会情報セキュリティ研究会
- Place of Presentation
  北九州市立大学国際環境工学部ひびきのキャンパス（北九州市若松区）
- Year and Date
  2015-03-02 – 2015-03-03
- Data Source
  KAKENHI-PROJECT-26330150
[Presentation] On the Impossibility of Proving Security of Strong-RSA Signatures via the RSA Assumption
- Author(s)
  Masayuki Fukumitsu, Shingo Hasegawa, Shuji Isobe and Hiroki Shizuya
- Organizer
  Proc. 19th Australasian Conference on Information Security and Privacy (ACISP 2014)
- Place of Presentation
  University of Wollongong (Wollongong, NSW, Australia)
- Year and Date
  2014-07-07 – 2014-07-09
- Data Source
  KAKENHI-PROJECT-26330150

1. SAKURAI Kouichi (60264066)

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2. ASAHIRO Yuichi (40304761)

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3. SUZUKI Masakazu (20112302)

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4. ISHIHATA Hiroshi (40261523)

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5. SHIMAUCHI Hidetoshi (70187425)

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6. YASUDA Kazuhiko (80174506)

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7. SHOJI Shigeru (10142986)

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8. 斎藤紘一 (90004457)

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9. 足立美比古 (70014800)

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10. 関内隆 (50125473)

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11. 前田和茂 (20125652)

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12. 佐藤勢紀子 (20205925)

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13. SAKAI Yasuyuki

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14. 酒井康之

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15. 山田志保子

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SHIZUYA Hiroki 静谷 啓樹

Shizuya Hiroki 静谷 啓樹

静谷 啓樹 シズヤ ヒロキ

Research Projects

Research Products

Co-Researchers

A Search for Quantum-resistant Problems over Finite Noncommutative GroupPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Constructing a theory of fixed points assciated with one-way functionsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Constructing encryption functions secure against quantum computingPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

STEALTHAUTHENTIFICATION USING RANGE OF RADIO FREQUENCY TRANSPONDER IN THE ENDODONTIC SPACE

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

マルチメディア教材作成の簡易化と学士課程全学教育への高度利用

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Research on public-key cryptosystems from hyperelliptic-curves

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

A study on searching for a string without decryptionPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Diffie-Hellman公開鍵配送方式の安全性の解明Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

離散対数問題に基づく暗号系の帰着関係の研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Preimage Sampling in the Higher-bit Approximate Setting With a Non-spherical Gaussian Sample2023

Author(s)

Journal Title

DOI

ISBN

Data Source

[Journal Article] Public-Key Projective Arithmetic Functional Encryption2021

Author(s)

Journal Title

DOI

NAID

ISSN

Language

Data Source

[Journal Article] On a Relation between Knowledge-of-Exponent Assumptions and the DLog vs. CDH Question2021

Author(s)

Journal Title

DOI

NAID

ISSN

SHIZUYA Hiroki 静谷啓樹

Shizuya Hiroki 静谷啓樹

静谷啓樹シズヤヒロキ