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IEICE TRANSACTIONS on Fundamentals

A Provably Secure Refreshable Partially Anonymous Token and Its Applications

Rie SHIGETOMI, Akira OTSUKA, Jun FURUKAWA, Keith MARTIN, Hideki IMAI

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Summary :

The first refreshable anonymous token scheme proposed in [1] enables one to provide services in such a way that each of its users is allowed to enjoy only a fixed number of services at the same time. In this paper, we show that the scheme in [1] is insecure and propose a provably secure refreshable partial anonymous token scheme which is a generalization of the previous scheme. The new scheme has an additional ability to control the anonymity level of users. We also propose a formal model and security requirements of the new scheme.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.5 pp.1396-1406
Publication Date
2006/05/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e89-a.5.1396
Type of Manuscript
Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
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