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Decentralized cryptographic infrastructure: Design and Analysis of Applied Systems

Research Project

Project/Area Number 15H02711
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Information security
Research InstitutionKyushu University

Principal Investigator

SAKURAI KOUICHI  九州大学, システム情報科学研究院, 教授 (60264066)

Co-Investigator(Kenkyū-buntansha) 穴田 啓晃  長崎県立大学, 情報システム学部, 准教授 (40727202)
馮 尭楷  九州大学, システム情報科学研究院, 助教 (60363389)
川本 淳平  九州大学, システム情報科学研究科(研究院, 助教 (10628473)
Co-Investigator(Renkei-kenkyūsha) NISHIDE Takashi  筑波大学, システム情報系, 准教授 (70570985)
Research Collaborator Yung Moti  米国グーグル兼コロンビア大学
Gollmann Dieter  ハンブルグ工科大学, 教授
SAUER Kurt  九州大学
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2017: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2016: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Keywords仮想通貨 / 暗号 / 認証 / 分散計算 / IDベース暗号 / ビットコイン / ブロックチェーン / グラフ問題 / 認証基盤 / 暗号通貨 / 公開台帳 / FinTech / 暗号・認証等 / ネットワーク / アルゴリズム / 情報システム / 暗号通過 / セキュア・ネットワーク / 著作権・コンテンツ保護 / デペンダブル・コンピューテング / 計算困難性 / マイニング / 一方向性ハッシュ関数 / グラフクリーク問題
Outline of Final Research Achievements

(1) Our main contribution is now published in IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY as "Bitcoin Block Withholding Attack: Analysis and Mitigation", (2) We design a decentralized Public-Key Infrastructure by using Identity-Embedding Method with RSA,and investigate the mathematical proof on its security. This contribution is now submitted to Journal of Information Security and Applications
(3) We have set up Workshop on Blockchain, Cryptocurrencies and Contracts associated with ACM AsiaCCS. The 1st (2017) was held in Oslo(Norway), and the 2nd (2018) in Inchon(Korea) .

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (33 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (5 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Acknowledgement Compliant: 4 results) Presentation (18 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Remarks (4 results)

  • [Int'l Joint Research] Indian Statistical Institute, Kolkata(インド)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Newcastle University,(英国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] インド統計研究所(インド)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Newcastle University(英国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] インド統計研究所(インド)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Bitcoin Block Withholding Attack: Analysis and Mitigation2017

    • Author(s)
      Samiran BAG, Sushmita RUJ and Kouichi SAKURAI
    • Journal Title

      IEEE Transactions on Information Forensics and Security

      Volume: 12 Issue: 8 Pages: 1967-1978

    • DOI

      10.1109/tifs.2016.2623588

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Bitcoin Block Withholding Attack: Analysis and Mitigation2017

    • Author(s)
      Samiran Bag, Sushmita Ruj, and Kouichi Sakurai
    • Journal Title

      IEEE TRANS. ON INFORMATION FORENSICS AND SECURITY (Accepted/印刷中)

      Volume: -

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] On the Application of Clique Problem for Proof-of-Work in Cryptocurrencies2016

    • Author(s)
      Samiran BAG, Sushmita RUJ and Kouichi SAKURAI
    • Journal Title

      Proc. of the 11th International Conference on Information Security and Cryptology (Inscrypt 2015), November 1-3, 2015, Beijing, China. Lecture Notes in Computer Sciences, Springer

      Volume: 11th

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Retricoin: Bitcoin based on compact proofs of retrievability2016

    • Author(s)
      Binanda Sengupta, Samiran Bag, Sushmita Ruj, Kouichi Sakurai
    • Journal Title

      Proceedings of the 17th International Conference on Distributed Computing and Networking (ICDCN2016), Singapore, January 4-7, 2016.

      Volume: 17th Pages: 1-10

    • DOI

      10.1145/2833312.2833317

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cross-group Secret Sharing for Secure Cloud Storage Service2016

    • Author(s)
      Chenyutao Ke, Hiroaki Anada, Junpei Kawamoto, Kirill Morozov, Kouichi Sakurai
    • Journal Title

      Proceedings of the 10th International Conference on Ubiquitous Information Management and Communication, IMCOM 2016

      Volume: - Pages: 1-8

    • DOI

      10.1145/2857546.2857610

    • NAID

      120006654575

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Hybrid Encryption Scheme Using Terminal Fingerprint and Its Application to Attribute-Based Encryption Without Key Misuse2015

    • Author(s)
      Chunlu Chen, Hiroaki Anada, Junpei Kawamoto, Kouichi Sakurai
    • Journal Title

      Lecture Notes in Computer Sciences, Springer

      Volume: 9357 Pages: 255-264

    • DOI

      10.1007/978-3-319-24315-3_26

    • NAID

      120006654534

    • ISBN
      9783319243146, 9783319243153
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] ブロックチェーンの暗号論的要素技術の分類2018

    • Author(s)
      穴田啓晃
    • Organizer
      2018年暗号と情報セキュリティシンポジウム予稿集,4F1-5.
    • Related Report
      2017 Annual Research Report
  • [Presentation] ブロックチェーンによるセキュアな分散処理を実現するニューラルネットワークの実装2018

    • Author(s)
      城島 翔太
    • Organizer
      火の国情報シンポジウム2018, 長崎大学, 長崎県, Mar.1-2, 2018.
    • Related Report
      2017 Annual Research Report
  • [Presentation] ワームロボットシステム のためのブロックチェーン 技術を応用したセキュアな 情報共有手法の提案2018

    • Author(s)
      西田 裕輝
    • Organizer
      火の国情報シンポジウム2018, 長崎大学, 長崎県, Mar.1-2, 2018.
    • Related Report
      2017 Annual Research Report
  • [Presentation] スケーラブルなプルーフ・オブ・ワークのためのグラーフクリーク・マイニングの分散の解析2017

    • Author(s)
      穴田 啓晃, 松島 智洋, 川本 淳平, バグ・サミラン, 櫻井幸一
    • Organizer
      2017年暗号と情報セキュリティシンポジウム予稿論文集, 1F2-5,
    • Place of Presentation
      沖縄
    • Year and Date
      2017-01-24
    • Related Report
      2016 Annual Research Report
  • [Presentation] ブロックチェーンにおける計算困難問題の困難さを制御する方式の調査2017

    • Author(s)
      穴田啓晃
    • Organizer
      第79回コンピュータセキュリティ研究発表会研究報告集 2017-CSEC-79(5), pp.1-5.
    • Related Report
      2017 Annual Research Report
  • [Presentation] Bitcoin, BlockChain, FinTech, IoT, AI and you Future2017

    • Author(s)
      Kouichi SAKURAI
    • Organizer
      BLOCKCHAIN 2017 Workshop on Blockchain Technologies, Indian Statistical Institute, Kolkata
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] CRYPTOGRAPHY with BlockChain2017

    • Author(s)
      Kouichi SAKURAI
    • Organizer
      BLOCKCHAIN 2017 Workshop on Blockchain Technologies, Indian Statistical Institute, Kolkata
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 計算資源の有効利用を目的としたブロックチェーンシステムの提案2017

    • Author(s)
      中山 和也,
    • Organizer
      第79回コンピュータセキュリティ研究発表会, 九州大学伊都キャンパス, 福岡県, Dec. 4-5, 2017.
    • Related Report
      2017 Annual Research Report
  • [Presentation] 暗号通貨に関するIACR サマースクール及びECRYPT ワークショップ参加報告2016

    • Author(s)
      松本 晋一, 穴田 啓晃, フォン ヤオカイ, 櫻井 幸一:
    • Organizer
      コンピュータセキュリティシンポジウム2016予稿論文集 2C4-4
    • Place of Presentation
      秋田
    • Year and Date
      2016-10-11
    • Related Report
      2016 Annual Research Report
  • [Presentation] Yet Another Note on Block Withholding Attack on Bitcoin Mining Pools2016

    • Author(s)
      Samiran BAG, Kouichi SAKURAI
    • Organizer
      Information Security - 19th International Conference,
    • Place of Presentation
      Honolulu, HI, USA
    • Year and Date
      2016-09-03
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] グラフクリーク探索問題に対するビットコイン・マイニングの評価2016

    • Author(s)
      松島智洋(*),穴田啓晃,川本淳平,バグ・サミラン,櫻井幸一
    • Organizer
      火の国情報シンポジウム2016予稿集. 4B-2
    • Place of Presentation
      宮崎(日本)
    • Year and Date
      2016-03-02
    • Related Report
      2015 Annual Research Report
  • [Presentation] ビットコイン・マイニングにおける追加報酬を用いたブロック保留攻撃2016

    • Author(s)
      バグ サミラン(*), ルジ スシミタ, 櫻井 幸一
    • Organizer
      第33回暗号と情報セキュリティシンポジウム(SCIS2016)予稿集, 1A2-5, 熊本, 2016年1月.
    • Place of Presentation
      熊本(日本)
    • Year and Date
      2016-01-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 複数プロバイダに亘る分散ストレージのためのグループ横断秘密分散法2016

    • Author(s)
      柯 陳毓たお0* 穴田 啓晃† 川本 淳平† モロゾフ キリル‡ 櫻井幸一†
    • Organizer
      第33回暗号と情報セキュリティシンポジウム(SCIS2016)予稿集, 3A1-3, 熊本, 2016年1月.
    • Place of Presentation
      熊本(日本)
    • Year and Date
      2016-01-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] Application of Graph Problem for Bitcoin Mining2015

    • Author(s)
      Samiran BAG(*), Sushmita RUJ and Kouichi SAKURAI
    • Organizer
      Computer Security Symposium 2015 (CSS2015), 3C3-2, October 21-23, 2015, Nagasaki, Japan.
    • Place of Presentation
      Nagasaki, JAPAN
    • Year and Date
      2015-10-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] Revisiting Block Withholding Attack in Bitcoin Cryptocurrency2015

    • Author(s)
      Samiran BAG(*), Sushmita RUJ and Kouichi SAKURAI
    • Organizer
      Computer Security Symposium 2015 (CSS2015), 3C3-3, October 21-23, 2015, Nagasaki, Japan.
    • Place of Presentation
      Nagasaki, JAPAN
    • Year and Date
      2015-10-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] 次世代暗号通貨プラットフォーム Ethereum の実験的評価,2015

    • Author(s)
      フォン ヤオカイ(*), 松本 晋一, 穴田 啓晃, 川本 淳平, 櫻井 幸一,
    • Organizer
      コンピュータセキュリティシンポジウム2015 (CSS2015), 2015.10.23
    • Place of Presentation
      長崎(日本)
    • Year and Date
      2015-10-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] 端末フィンガープリント情報を用いた鍵乱用を防止可能な ハイブリッド暗号化方式2015

    • Author(s)
      陳 春路(*), 穴田 啓晃, 川本 淳平, 櫻井 幸一
    • Organizer
      Computer Security Symposium 2015 2 1 - 2 3 October 2015
    • Place of Presentation
      長崎(日本)
    • Year and Date
      2015-10-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] Bitcoin Based on Compact Proofs of Retrievability2015

    • Author(s)
      Binanda SENGUPTA, Samiran BAG(ポスター説明者), Sushmita RUJ, and Kouichi SAKURAI
    • Organizer
      he 10th International Workshop on Security (IWSEC2015), Todaiji Cultural Center, 日本,2015年8月26日-28日.
    • Place of Presentation
      Nara, JAPAN
    • Year and Date
      2015-08-26
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 九州大学-研究者情報 [櫻井 幸一 (教授) システム情報科学研究院

    • URL

      http://hyoka.ofc.kyushu-u.ac.jp/search/details/K000220

    • Related Report
      2017 Annual Research Report
  • [Remarks] 九州大学サイバーセキュリティセンター 高度セキュリティ技術研究部門 櫻井幸一

    • URL

      https://cs.kyushu-u.ac.jp/ja/organization/atc/kouichi-sakurai/

    • Related Report
      2017 Annual Research Report
  • [Remarks] SAKURAI Lab.

    • URL

      http://itslab.inf.kyushu-u.ac.jp/index-j.html

    • Related Report
      2017 Annual Research Report
  • [Remarks] 研究代表者研究室HP

    • URL

      http://itslab.csce.kyushu-u.ac.jp/index.html

    • Related Report
      2015 Annual Research Report

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Published: 2015-04-16   Modified: 2022-10-20  

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