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Asecret sharing scheme for multiple associating group key management in secure group communications

Research Project

Project/Area Number 21700072
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Computer system/Network
Research InstitutionNagoya Institute of Technology

Principal Investigator

SHIRAISHI Yoshiaki  Nagoya Institute of Technology, 工学研究科, 准教授 (70351567)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsグループ通信 / 鍵管理 / 多重帰属 / 秘密分散
Research Abstract

Shared file is encrypted and stored in server then group member shares its decryption key as an implementation of secure group communication. User has the same number of group decryption key as multiple associating groups in the communication. This research proposes a group file sharing protocol and group management protocols using ElGamal threshold cryptosystem and secret sharing scheme, which can decrypt file decryption key shared in any associated groups by one group key.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (4 results)

All 2011 2010

All Presentation (4 results)

  • [Presentation] 単一の鍵で多重帰属できるグループファイル共有システムの実装2011

    • Author(s)
      佐々木啓, 長澤悠貴, 毛利公美, 福田洋治, 白石善明, 野口亮司
    • Organizer
      情報処理学会第73回全国大会,第4分冊,pp,57-58, 2Z-9
    • Year and Date
      2011-03-02
    • Related Report
      2010 Final Research Report
  • [Presentation] 単一の鍵で多重帰属できるグループファイル共有システムの実装2011

    • Author(s)
      佐々木啓
    • Organizer
      情報処理学会第73回全国大会
    • Place of Presentation
      東京工業大学・大岡山キャンパス
    • Year and Date
      2011-03-02
    • Related Report
      2010 Annual Research Report
  • [Presentation] 単一の鍵で多重帰属できるグループファイル共有プロトコルの評価2010

    • Author(s)
      長澤悠貴, 白石善明, 毛利公美, 福田洋治
    • Organizer
      情報処理学会第72回全国大会,第3分冊,pp.667-668, 4ZE-5
    • Year and Date
      2010-03-10
    • Related Report
      2010 Final Research Report
  • [Presentation] 単一の鍵で多重帰属できるグループファイル共有プロトコルの評価2010

    • Author(s)
      長澤悠貴
    • Organizer
      情報処理学会第72回全国大会
    • Place of Presentation
      東京大学・本郷キャンパス
    • Year and Date
      2010-03-10
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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