Paper 2004/096

On the Ambiguity of Concurrent Signatures

Yi Mu, Fangguo Zhang, and Willy Susilo

Abstract

We point out that the notion of {\em ambiguity} introduced in the concurrent signatures proposed by Chen, Kudla, and Paterson in Eurocrypt 2004 is incorrect. Any third party who observed two signatures can differentiate who has/have produced the signatures by performing the verification algorithm. We note that the model proposed in the paper is sound, but the concrete scheme does not really provide what is required in the model.

Note: The paper by Chen, Kudla, and Paterson can be downloaded from the Springer website

Metadata
Available format(s)
-- withdrawn --
Category
Cryptographic protocols
Publication info
Published elsewhere. Unknown where it was published
Contact author(s)
ymu @ uow edu au
History
2004-05-05: withdrawn
2004-04-25: received
See all versions
Short URL
https://ia.cr/2004/096
License
Creative Commons Attribution
CC BY
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