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http://dx.doi.org/10.13089/JKIISC.2011.21.4.11

A Study on Anonymous Authorization based on Short Group Signatures  

Shin, Soo-Yeon (Department of Computer Science, Sejong University)
Kwon, Tae-Kyoung (Department of Computer Science, Sejong University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.21, no.4, 2011 , pp. 11-26 More about this Journal
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.
Keywords
privacy preservation; anonymous authentication; anonymous authorization; fine-grained authorization;
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