Journal of the Korea Institute of Information Security & Cryptology (정보보호학회논문지)

Korea Institute of Information Security and Cryptology (한국정보보호학회)
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A Study on Anonymous Authorization based on Short Group Signatures

짧은 그룹 서명 기법 기반의 익명 인가에 대한 연구

  • 신수연 (세종대학교 컴퓨터공학과) ;
  • 권태경 (세종대학교 컴퓨터공학과)
  • Received : 2010.11.08
  • Accepted : 2011.03.15
  • Published : 2011.08.31
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Abstract

The existing anonymous authentication schemes based on group signatures for protecting privacy do not provide anonymous authorization which is required in the practical environments. In this paper, we propose an anonymous authentication and authorization scheme that enables a service provider both to authenticate anonymously its users and to provide different service according to their authorization. In the proposed scheme, a user's real identity, anonymity and authorization are managed distinctly through the separation of group manager's capabilities and an authorization authority. It is also possible for the proposed scheme to apply various access control models.

프라이버시 보호를 위한 그룹 서명 기법에 기반한 기존의 익명 인증 기법은 실제 응용 환경에서 필요로 하는 익명인가는 제공하지 못한다. 이를 해결하기 위해서 본 논문에서는 짧은 그룹 서명 기법에 기반하여 익명 인증과 동시에 익명 인가를 통해 사용자에게 권한별 서비스 제공이 가능한 익명 인증 및 인가 기법을 제안한다. 익명 인증 및 인가 기법은 그룹 매니저의 권한 분할과 권한 매니저를 이용하여, 실명, 익명, 권한이 모두 분리 관리 되도록 하며, 다양한 접근제어 모델의 적용이 가능하다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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