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Registered ANONYMOUS AUTHENTICATION SERVICE METHOD FOR PROVIDING LOCAL LINKABILITY

부분 연결성을 제공하는 익명 인증 서비스 방법
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Inventors
Lee Sokjoon, Jung Yeon Hwang, Lee Yun-Kyung, Mun Hyeran, Young Ho Kim, Chung Byung Ho, Kim Sin Hyo, Cho Hyun Sook, Lee Sang-Woo
Application No.
12971103 (2010.12.17)
Publication No.
20110154045 (2011.06.23)
Registration No.
8499158 (2013.07.30)
Country
UNITED STATES
Project Code
09MS2300, Development of Anonymity-based u-Knowledge Security Technology, Cho Hyun Sook
Abstract
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 Keywords
Anonymous Authentication, Group Signature, Service Provider, Service domain, virtual index