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Cryptanalysis and improvement of an ID-based ad-hoc anonymous identification scheme at CT-RSA 05
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Abstract: | An ad-hoc anonymous identification scheme is a new multi-user cryptographic primitive that allows participants from a user population to form ad hoc groups, and then prove membership anonymously in such groups. Recently, Nguyen \cite{Lan05} proposed an ID-based ad-hoc anonymous identification scheme from bilinear pairings. However, in this paper, we propose an attack on Nguyen's ID-based ad-hoc anonymous identification scheme. We show that any one can impersonate a valid group member to perform the anonymous identification protocol successfully. Furthermore, we propose a solution to improve this scheme against our attack. |
BibTeX
@misc{eprint-2005-12439, title={Cryptanalysis and improvement of an ID-based ad-hoc anonymous identification scheme at CT-RSA 05}, booktitle={IACR Eprint archive}, keywords={applications /}, url={http://eprint.iacr.org/2005/103}, note={ isdzhfg@zsu.edu.cn 12875 received 31 Mar 2005, last revised 1 Apr 2005}, author={Fangguo Zhang and Xiaofeng Chen}, year=2005 }