| Project/Area Number |
15K00029
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Theory of informatics
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| Research Institution | University of Nagasaki |
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Principal Investigator |
Anada Hiroaki 長崎県立大学, 情報システム学部, 准教授 (40727202)
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| Co-Investigator(Kenkyū-buntansha) |
有田 正剛 情報セキュリティ大学院大学, その他の研究科, 教授 (50387106)
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| Research Collaborator |
RUJ Sushmita Indian Statistical Institute, Assistant Professor
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 属性ベース認証 / 属性ベース署名 / 対話型証明 / 秘密分散 / 証拠識別不可能 / 属性プライバシー / コミットアンドプルーヴ / 秘密鍵結託耐性 / 暗号理論 / 属性ベース / 対話型証明システム / 本人認証 / デジタル署名 / 秘密分散法 / 証拠識別不可能性 / プライバシー保護 / 秘密分散方式 / 評判システム / 評定スキーム |
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| Outline of Final Research Achievements |
We defined an AND-composition of proof systems that prove the knowledge of an identity string and digital signatures on the string in witness-indistinguishable way. We gave a generic design of the system. The key idea is "Commit to your identity, and prove your identity and signatures by WIPoK". Moreover, by using the AND-composition of proof systems as a building block, we defined the syntax and security of an anonymous attribute-authentication scheme in which a user of a single identity is given attribute-credentials by plural authorities. Then we designed a generic template of constructing the proposed scheme, and evaluated the security. We proposed these achievements at four journal papers, fourteen conferences. We edited three lecture notes of related international workshops.
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