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Large-scale experiments for cryptanalysis of lattice-based cryptography and evaluation of the computational complexity

Research Project

Project/Area Number 20H04142
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 60010:Theory of informatics-related
Research InstitutionRikkyo University

Principal Investigator

Yasuda Masaya  立教大学, 理学部, 教授 (30536313)

Co-Investigator(Kenkyū-buntansha) 鍛冶 静雄  九州大学, マス・フォア・インダストリ研究所, 教授 (00509656)
藤澤 克樹  九州大学, マス・フォア・インダストリ研究所, 教授 (40303854)
青野 良範  国立研究開発法人情報通信研究機構, サイバーセキュリティ研究所, 主任研究員 (50611125)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2020: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Keywords格子問題 / 最短ベクトル問題 / 格子アルゴリズム / 格子基底簡約 / 大規模並列化 / 列挙法 / 篩法 / 最近ベクトル問題 / 格子暗号
Outline of Research at the Start

量子計算機の実用化に向けた開発競争が加速する一方,RSA暗号や楕円曲線暗号などの現在普及の暗号の量子計算機による危殆化に備え,米国標準技術研究所NISTは量子計算機に耐性のあるポスト量子暗号の標準化計画を進めている.現在,格子暗号はポスト量子暗号の有力候補として期待されている.本研究の目的は以下の2点である:
(1) 格子暗号の安全性を支える格子問題に対する最良の解読アルゴリズムの設計・並列化開発と大規模な解読実験を行い,想定される攻撃者の計算限界を実験的に見積もる.
(2) さらに,開発した解読アルゴリズムの解読計算量を理論的に解析し,理論と実験の両面から格子暗号の解読計算量を精密に評価する.

Outline of Final Research Achievements

Lattice-based cryptography is a next-generation cryptographic technology that is resistant to cryptanalysis by quantum computers and applicable to the construction of high-functional cryptography such as fully homomorphic encryption. The purpose of this research is to design and parallelize the best algorithms for solving lattice problems such as the shortest vector problem (SVP) that support the security of lattice-based cryptography. We also conduct large-scale solving experiments to estimate the time complexity precisely.In this research, we succeeded in developing the world's first distributed, asynchronous, and large-scale parallelization system for lattice basis reduction, which is essential for solving lattice problems. With the parallelization system, we conducted large-scale experiments for solving instances in the SVP challenge to estimate the average solving time.

Academic Significance and Societal Importance of the Research Achievements

本研究では、耐量子性と高機能性の両方を併せ持つ格子暗号の安全性を支える数学問題に対して、実際の計算機上での解読実験を通して、その解読計算量を評価した。本研究で得られた格子暗号に対する解読技術や解析法は、高性能計算や暗号解析の分野における国際会議や学術雑誌で多数発表した。また、本研究の解読評価により、格子暗号の安全なパラメータ抽出が可能となるため、今後の格子暗号の標準化等の社会活動への貢献が期待できる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (32 results)

All 2024 2023 2022 2021 2020

All Journal Article (15 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 14 results,  Open Access: 8 results) Presentation (17 results) (of which Int'l Joint Research: 1 results,  Invited: 7 results)

  • [Journal Article] Parallel DeepBKZ 2.0: Development of parallel DeepBKZ reduction with large blocksizes2024

    • Author(s)
      Satoshi Nakamura, Nariaki Tateiwa, Masaya Yasuda, Katsuki Fujisawa
    • Journal Title

      Mathematical Foundations for Post-Quantum Cryptography

      Volume: accepted

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expanded lattices for solving ring-based LWE and NTRU problems2024

    • Author(s)
      Satoshi Nakamura, Masaya Yasuda
    • Journal Title

      Mathematical Foundations for Post-Quantum Cryptography

      Volume: accepted

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] NIST標準化の格子暗号方式の紹介2023

    • Author(s)
      安田雅哉
    • Journal Title

      電子情報通信学会誌11月号(特集「耐量子計算機暗号の最新動向」における記事)

      Volume: 106

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Development and analysis of massive parallelization of a lattice basis reduction algorithm2023

    • Author(s)
      Nariaki Tateiwa, Yuji Shinano, Masaya Yasuda, Shizuo Kaji, Keiichiro Ymamura, Katsuki Fujiwara
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics (JJIAM)

      Volume: Online First Issue: 1 Pages: 13-56

    • DOI

      10.1007/s13160-023-00580-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] CMAP-LAP: Configurable Massively Parallel Solver for Lattice Problems2021

    • Author(s)
      Nariaki Tateiwa, Yuji Shinano, Keiichiro Yamamura, Akihiro Yoshida, Shizuo Kaji, Masaya Yasuda and Katsuki Fujisawa
    • Journal Title

      2021 IEEE 28th International Conference on High Performance Computing, Data, and Analytics (HiPC)YTICS(HiPC 2021)

      Volume: - Pages: 42-52

    • DOI

      10.1109/hipc53243.2021.00018

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamic self-dual DeepBKZ lattice reduction with free dimensions and its implementation2021

    • Author(s)
      Nakamura Satoshi, Yasuda Masaya
    • Journal Title

      Discrete Applied Mathematics

      Volume: 304 Pages: 220-229

    • DOI

      10.1016/j.dam.2021.07.035

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Trace Map Attack Against Special Ring-LWE Samples2021

    • Author(s)
      Ikematsu Yasuhiko, Nakamura Satoshi, Yasuda Masaya
    • Journal Title

      International Workshop on Security (IWSEC2021), Springer LNCS

      Volume: 12835 Pages: 3-22

    • DOI

      10.1007/978-3-030-85987-9_1

    • ISBN
      9783030859862, 9783030859879
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An Extension of Kannan’s Embedding for Solving Ring-Based LWE Problems2021

    • Author(s)
      Nakamura Satoshi, Yasuda Masaya
    • Journal Title

      IMA International Conference on Cryptography and Coding (IMACC2021), Springer LNCS

      Volume: 13129 Pages: 201-219

    • DOI

      10.1007/978-3-030-92641-0_10

    • ISBN
      9783030926403, 9783030926410
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Survey of Solving SVP Algorithms and Recent Strategies for Solving the SVP Challenge2020

    • Author(s)
      Yasuda Masaya
    • Journal Title

      Proceedings of MQC 2019 (International Symposium on Mathematics, Quantum Theory, and Cryptography)

      Volume: 33 Pages: 189-207

    • DOI

      10.1007/978-981-15-5191-8_15

    • ISBN
      9789811551901, 9789811551918
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Massive Parallelization for Finding Shortest Lattice Vectors Based on Ubiquity Generator Framework2020

    • Author(s)
      Tateiwa Nariaki、Shinano Yuji、Nakamura Satoshi、Yoshida Akihiro、Kaji Shizuo、Yasuda Masaya、Fujisawa Katsuki
    • Journal Title

      The International Conference for High Performance Computing, Networking, Storage, and Analysis (SC20)

      Volume: - Pages: 1-15

    • DOI

      10.1109/sc41405.2020.00064

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fast secure matrix multiplications over ring-based homomorphic encryption2020

    • Author(s)
      Mishra Pradeep Kumar、Rathee Deevashwer、Duong Dung Hoang、Yasuda Masaya
    • Journal Title

      Information Security Journal: A Global Perspective

      Volume: - Issue: 4 Pages: 1-16

    • DOI

      10.1080/19393555.2020.1836288

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamic Self-dual DeepBKZ Lattice Reduction with Free Dimensions2020

    • Author(s)
      Nakamura Satoshi、Ikematsu Yasuhiko、Yasuda Masaya
    • Journal Title

      Proceedings of the Sixth International Conference on Mathematics and Computing (ICMC 2020)

      Volume: 1262 Pages: 377-391

    • DOI

      10.1007/978-981-15-8061-1_30

    • ISBN
      9789811580604, 9789811580611
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solving the Search-LWE Problem by Lattice Reduction over Projected Bases2020

    • Author(s)
      Nakamura Satoshi、Tateiwa Nariaki、Kinjo Koha、Ikematsu Yasuhiko、Yasuda Masaya、Fujisawa Katsuki
    • Journal Title

      Proceedings of the Sixth International Conference on Mathematics and Computing

      Volume: - Pages: 29-42

    • DOI

      10.1007/978-981-15-8061-1_3

    • ISBN
      9789811580604, 9789811580611
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of DeepBKZ reduction for finding short lattice vectors2020

    • Author(s)
      Yasuda Masaya、Nakamura Satoshi、Yamaguchi Junpei
    • Journal Title

      Designs, Codes and Cryptography

      Volume: 88 Issue: 10 Pages: 2077-2100

    • DOI

      10.1007/s10623-020-00765-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Self-dual DeepBKZ for finding short lattice vectors2020

    • Author(s)
      Yasuda Masaya
    • Journal Title

      Journal of Mathematical Cryptology

      Volume: 14 Issue: 1 Pages: 84-94

    • DOI

      10.1515/jmc-2015-0053

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ハイブリッドStreaming法によるCRYSTALS-Dilithiumのリソース最適化2024

    • Author(s)
      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
    • Organizer
      暗号と情報セキュリティシンポジウム(SCIS2024)
    • Related Report
      2023 Annual Research Report
  • [Presentation] FALCON におけるマスキング実装の提案2024

    • Author(s)
      片山瑛, 中邑聡史, 上野真奈, 安田雅哉
    • Organizer
      暗号と情報セキュリティシンポジウム(SCIS2024)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 近似最近ベクトル探索と埋め込み法を用いた格子による素因数分解法の実装報告2024

    • Author(s)
      佐藤新, Auzemery Aurelien, 片山瑛, 安田雅哉
    • Organizer
      暗号と情報セキュリティシンポジウム(SCIS2024)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 格子ベース準同型暗号の応用と格子基底簡約2023

    • Author(s)
      安田雅哉
    • Organizer
      研究集会「暗号と量子計算」(東京工業大学)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 格子問題の求解アルゴリズムとその応用2023

    • Author(s)
      安田雅哉
    • Organizer
      2023年度東大数理・情報数学セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 探索Module-LWE問題に対する格子攻撃の実験報告2023

    • Author(s)
      中邑聡史、片山瑛、安田雅哉
    • Organizer
      2023年暗号と情報セキュリティシンポジウム(SCIS2023)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Lattice Basis Reduction and Its Application to Cryptanalysis2023

    • Author(s)
      Masaya Yasuda
    • Organizer
      Mathematics for Industry in the Asia Pacific Area at SIAM Conference on Computational Science and Engineering (CSE23)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 格子基底簡約とLWE/NTRU問題に対する格子攻撃2022

    • Author(s)
      安田雅哉
    • Organizer
      九大IMI共同利用「耐量子計算機暗号と量子情報の数理」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 格子暗号の安全性を支える格子問題の解読法2022

    • Author(s)
      安田雅哉
    • Organizer
      東大数理・情報数学セミナー
    • Related Report
      2022 Annual Research Report
  • [Presentation] NTRU格子の拡張と格子攻撃2022

    • Author(s)
      中邑聡史, 安田雅哉
    • Organizer
      2022年暗号と情報セキュリティシンポジウム(SCIS2022)
    • Related Report
      2021 Annual Research Report
  • [Presentation] 最短ベクトル問題を解くための格子基底簡約とその大規模並列化2022

    • Author(s)
      安田雅哉
    • Organizer
      研究集会「量子暗号理論と耐量子暗号」(早稲田大学・Zoomによるオンライン開催)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 探索Ring-LWE問題に対するKannanの埋め込み法の拡張2021

    • Author(s)
      中邑聡史, 安田雅哉
    • Organizer
      日本応用数理学会2021年度年会「数論アルゴリズムとその応用」(JANT)セッション
    • Related Report
      2021 Annual Research Report
  • [Presentation] 現代の暗号技術を支える数学2021

    • Author(s)
      安田雅哉
    • Organizer
      KISTEC教育講座「情報セキュリティ理解のための先端暗号技術入門」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 格子基底簡約とその大規模並列化の紹介2021

    • Author(s)
      安田雅哉
    • Organizer
      九大IMI共同利用研究集会「新世代暗号の設計・評価」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 最短ベクトル問題求解に向けた格子基底簡約入門2021

    • Author(s)
      安田雅哉
    • Organizer
      RIMS共同研究「準周期的秩序の数理とその周辺」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 代数構造を持つ格子上の最短ベクトル探索アルゴリズムの開発2021

    • Author(s)
      中邑聡史,安田雅哉
    • Organizer
      2021年暗号と情報セキュリティシンポジウム(SCIS2021)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 最短格子ベクトル問題求解におけるUbiquity Generator Frameworkを用いた大規模MPI並列化2020

    • Author(s)
      立岩斉明,品野勇治,吉田明広,鍛冶静雄,安田雅哉,藤澤克樹
    • Organizer
      第176回ハイパフォーマンスコンピューティング研究発表会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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