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Study and development of advanced elliptic curve cryptosystem

Research Project

Project/Area Number 19K11966
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 60070:Information security-related
Research InstitutionFuture University-Hakodate

Principal Investigator

Shirase Masaaki  公立はこだて未来大学, システム情報科学部, 教授 (70530757)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords暗号 / 楕円曲線 / ペアリング / 同種写像 / 高速実装 / 楕円曲線暗号 / 高機能暗号 / 耐量子暗号 / ハードウェア実装
Outline of Research at the Start

現在インターネットの通信などで普及している楕円曲線暗号は,研究としてはペアリング写像や同種写像を使うことで高機能化(暗号にアクセス制御機能を持たせることなど),耐量子化(量子計算機出現後も安全な公開鍵暗号にすること)が進んでいる.本研究は,研究代表者が提案したMe演算を組み合わせることで,新しい楕円曲線暗号を構成することが目的である.更に,新しい暗号の効率的なソフトウェア・ハードウェア実装法を提案する.

Outline of Final Research Achievements

For elliptic curve cryptography, the principal investigator proposed an algorithm to search for an elliptic curve suitable for hardware implementation because the remainder is efficiently calculated, and implemented scalar multiplication of an elliptic curve using the curve found by the algorithm on FPGA. He also proposed quadratic and cubic characteristics on elliptic curves, and suggested efficient methods for determining the evenness of the order of points and the ploidy of 3 or 4 using these characteristics. For pairing cryptosystems, he improved the extension field construction method and final exponentiation calculation for pairing-friendly curves with various embedded degrees. For SIDH, which is one of post-quantum cryptography, he improved the composition of the extension field and the calculation method using the isomorphism. He proposed a pseudo-random number generation method using the Me operation, which is a new operation of elliptic curves.

Academic Significance and Societal Importance of the Research Achievements

電子署名ECDSAや鍵共有ECDHEを含む楕円曲線暗号は現在SSL/TLS通信やブロックチェーン等で広く普及している.IDベース暗号やグループ署名,属性ベース暗号などの機能性を有した暗号技術である高機能暗号は,その多くは楕円曲線上のペアリング写像を利用している.楕円曲線間の同種写像は,耐量子計算機の出現後も安全性が保たれる同種写像暗号の構成に利用される.このように楕円曲線は,様々なタイプの暗号技術の構成要素となっている.本研究はこれらの暗号の高速化や新しい演算Meの暗号技術への応用に対する成果を得ており,暗号技術や情報セキュリティ分野に貢献した.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (19 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (15 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Improvement of Final Exponentiation for Pairings on BLS Curves with Embedding Degree 152021

    • Author(s)
      NANJO Yuki、SHIRASE Masaaki、KUSAKA Takuya、NOGAMI Yasuyuki
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E104.A Issue: 1 Pages: 315-318

    • DOI

      10.1587/transfun.2020EAL2046

    • NAID

      130007964848

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2021-01-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Restrictions of Integer Parameters for Generating Attractive BLS Subfamilies of Pairing-Friendly Elliptic Curves with Specific Embedding Degrees2021

    • Author(s)
      Nanjo Yuki、Shirase Masaaki、Kusaka Takuya、Nogami Yasuyuki
    • Journal Title

      International Journal of Networking and Computing

      Volume: 11 Issue: 2 Pages: 383-411

    • DOI

      10.15803/ijnc.11.2_383

    • NAID

      130008063316

    • ISSN
      2185-2839, 2185-2847
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Construction Method of an Isomorphic Map between Quadratic Extension Fields Applicable for SIDH2020

    • Author(s)
      NANJO Yuki、SHIRASE Masaaki、KUSAKA Takuya、NOGAMI Yasuyuki
    • Journal Title

      IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

      Volume: E103.A Issue: 12 Pages: 1403-1406

    • DOI

      10.1587/transfun.2020TAL0002

    • NAID

      130007948374

    • ISSN
      0916-8508, 1745-1337
    • Year and Date
      2020-12-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Performance Analysis and Evaluation of SIDH Applied Several Implementation-Friendly Quadratic Extension Fields2020

    • Author(s)
      Nanjo Yuki、Shirase Masaaki、Kusaka Takuya、Nogami Yasuyuki
    • Journal Title

      International Journal of Networking and Computing

      Volume: 10 Issue: 2 Pages: 227-241

    • DOI

      10.15803/ijnc.10.2_227

    • NAID

      130007878726

    • ISSN
      2185-2839, 2185-2847
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 位数が4kの有限体上楕円曲線の点の位数の判定法2022

    • Author(s)
      白勢政明
    • Organizer
      暗号と情報セキュリティシンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 有限体上楕円曲線の3次の指標2021

    • Author(s)
      白勢政明
    • Organizer
      日本応用数理学会2021年度年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Efficient Final Exponentiation for Pairings on Several Curves Resistant to Special TNFS2021

    • Author(s)
      Yuki Nanjo, Masaaki Shirase, Yuta Kodera, Takuya Kusaka, Yasuyuki Nogami
    • Organizer
      CANDAR 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Construction Method of Final Exponentiation for a Specific Cyclotomic Family of Pairing-Friendly Elliptic Curves with Prime Embedding Degrees2021

    • Author(s)
      Yuki Nanjo, Masaaki Shirase, Yuta Kodera, Takuya Kusaka, Yasuyuki Nogami
    • Organizer
      CANDAR 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pairing-friendly曲線のファミリーの構成について2021

    • Author(s)
      白勢政明
    • Organizer
      暗号と情報セキュリティシンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Specific Congruence Classes of Integer Parameters for Generating BLS Curves for Fast Pairings.2020

    • Author(s)
      Yuki Nanjo, Masaaki Shirase, Takuya Kusaka, Yasuyuki Nogami
    • Organizer
      CANDAR (Workshops) 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 任意のBLS曲線の最終べきのhard partについて2020

    • Author(s)
      白勢政明, 南條由紀
    • Organizer
      情報セキュリティ研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] Curve25519より少し良いかもしれない楕円曲線とそのハードウェア実装の考察2020

    • Author(s)
      白勢政明
    • Organizer
      暗号と情報セキュリティシンポジウム2020
    • Related Report
      2019 Research-status Report
  • [Presentation] Evaluation of Pairing on Elliptic Curves with Embedding Degree 15 with Type-II All-one Polynomial Extension Field of Degree 52020

    • Author(s)
      Yuki Nanjo
    • Organizer
      暗号と情報セキュリティシンポジウム2020
    • Related Report
      2019 Research-status Report
  • [Presentation] 偶数位数を持つ有限体上楕円曲線の2次の指標2019

    • Author(s)
      白勢政明
    • Organizer
      応用数理学会2019年度会
    • Related Report
      2019 Research-status Report
  • [Presentation] Evaluation of Pairing on Elliptic Curves with Embedding Degree 15 with Type-II All-one Polynomial Extension Field of Degree 52019

    • Author(s)
      Yuki Nanjo
    • Organizer
      情報セキュリティ研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 楕円曲線のMe演算の負演算とその応用2019

    • Author(s)
      白勢政明
    • Organizer
      コンピュータセキュリティシンポジウム2019
    • Related Report
      2019 Research-status Report
  • [Presentation] Improvement of Miller's Algorithm of Pairing on Elliptic Curves with Embedding Degree 15 by Using Sparse Multiplication in Affine Coordinates2019

    • Author(s)
      Yuki Nanjo
    • Organizer
      コンピュータセキュリティシンポジウム2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 有限体上の楕円曲線の指標と点の位数の偶奇性2019

    • Author(s)
      白勢政明
    • Organizer
      情報セキュリティ研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] A Performance Analysis and Evaluation of SIDH with Implementation-Friendly Classes of Quadratic Extension Fields2019

    • Author(s)
      Yuki Nanjo
    • Organizer
      CANDAR2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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