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Cryptanalysis of Tzeng-Tzeng Forward-Secure Signature Schemes

Hong WANG, Gang QIU, Deng-Guo FENG, Guo-Zhen XIAO

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Summary :

In PKC'01, Tzeng et al. proposed two robust forward-secure signature schemes with proactive security: one is an efficient scheme, but it requires a manager; the other scheme is a new construction based on distributed multiplication procedures. In this paper, we point out their new distributed multiplication procedure is not secure, thus making the whole new construction insecure. Finally, we present an improved forward-secure signature scheme without a manager.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.3 pp.822-825
Publication Date
2006/03/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e89-a.3.822
Type of Manuscript
LETTER
Category
Information Security

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