Cryptology ePrint Archive: Report 2012/445

A note on ‘An efficient certificateless aggregate signature with constant pairing computations’

Debiao He, Jianhua Chen, Miaomiao Tian

Abstract: Recently, Xiong et al. [H. Xiong, Z. Guan, Z. Chen, F. Li, An efficient certificateless aggregate signature with constant pairing computations, Information Science, 219, pp. 225–235, 2013] proposed an efficient certificateless signature (CLS) scheme and used it to construct a certificateless aggregate signature (CLAS) scheme with constant pairing computations. They also demonstrated that both of the two schemes are provably secure in the random oracle model under the computational Diffie-Hellman assumption. Unfortunately, by giving concrete attacks, we point out that Xiong et al.’s schemes are not secure in their security model.

Category / Keywords: Certificateless cryptography; Aggregate signature; Bilinear pairing

Publication Info: The paper has been published.

Date: received 5 Aug 2012, last revised 16 Mar 2013

Contact author: hedebiao at 163 com

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Version: 20130316:092426 (All versions of this report)

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