부분 연결성을 제공하는 익명 인증 서비스 방법
이석준, 황정연, 이윤경, 문혜란, 김영호, 정병호, 김신효, 조현숙, 이상우
- 8499158 (2013.07.30)
- There is provided an anonymous service method of providing local linkability. The anonymous service method providing local linkability according to exemplary embodiments of the invention, an anonymous authentication operation based on a short group signature is performed, for which the concept of a local linkability is introduced to secure linkability within the same service domain. Namely, in the interior of a service provider, a virtual index having a fixed value is calculated for each service user, and in this case, although a plurality of service providers collude with each other, they cannot calculate a virtual index having the same value, whereby the linkability can be secured within the same service domain but not within the interiors of different service domains.
- KSP 제안 키워드
- Anonymous Authentication, Group Signature, Service Provider, Service domain, virtual index