Cryptology ePrint Archive: Report 2001/100
A Note on Girault's Self-Certified Model
Abstract: In this paper, we describe an important shortcoming of
the first self-certified model proposed by Girault,
that may be exploited by the authority to compute users' secret keys.
We also show, while it is possible to make the attack ineffective by
taking additional precautions, the resulting model loses all merits
of the original model and does no longer meet the primary
contribution of the self-certified notion.
Category / Keywords: Self-certified, Levels of trust, Random safe primes, Zero-knowledge, Discrete logarithm
Date: received 20 Nov 2001, last revised 3 Sep 2002
Contact author: saeednia at ulb ac be
Available formats: Postscript (PS) | Compressed Postscript (PS.GZ) | BibTeX Citation
Version: 20020903:101441 (All versions of this report)
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