Proposal and Implementation of Group Signature Scheme with Complete Privacy Protection

Research Project

Project/Area Number	19760256
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Communication/Network engineering
Research Institution	Okayama University
Principal Investigator	NAKANISHI Toru Okayama University, 大学院・自然科学研究科, 准教授 (50304332)
Project Period (FY)	2007 – 2009
Project Status	Completed (Fiscal Year 2009)
Budget Amount *help	¥3,600,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥600,000) Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywords	プライバシ保護 / 認証 / グループ署名 / プライバシー
Research Abstract	In group signature schemes realizing anonymous authentications, only a Privacy Manager (PM) can trace the signer in order to protect anonymous signer's illegal acts. However, PM can collect the privacy of users, which means that the group signatures do not solve the privacy problem. In this study, to realize the complete privacy protection, we proposed a group signature scheme excluding anonymous illegal users without PM, and implemented a Web-based anonymous authentication system without PM.

Report

(4 results)