An Improved Efficient Provable Secure Identity-Based Identification Scheme in the Standard Model

Syh-Yuan Tan; Ji-Jian Chin; Swee-Huay Heng; Bok-Min Goi
April 2013
KSII Transactions on Internet & Information Systems;Apr2013, Vol. 7 Issue 4, p910
Academic Journal
In 2008, Chin et al. proposed an efficient and provable secure identity-based identification scheme in the standard model. However, we discovered a subtle flaw in the security proof which renders the proof of security useless. While no weakness has been found in the scheme itself, a scheme that is desired would be one with an accompanying proof of security. In this paper, we provide a fix to the scheme to overcome the problem without affecting the efficiency as well as a new proof of security. In particular, we show that only one extra pre-computable pairing operation should be added into the commitment phase of the identification protocol to fix the proof of security under the same hard problems.


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