On the Security of a Certificateless Signature Scheme

Lin Cheng; Qiao Yan Wen

doi:10.4028/www.scientific.net/AMM.519-520.965

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 519-520On the Security of a Certificateless Signature...

On the Security of a Certificateless Signature Scheme

Abstract:

Certificateless public key cryptography eliminates inherent key escrow problem in identity-based cryptography, and does not yet requires certificates as in the traditional public key infrastructure. Recently, Yu et al. propose a new certificateless signature scheme and their scheme offers shorter system parameters and higher computational efficiency than the previous schemes in the standard model. However, in this paper, we show Yu et al.'s certificateless signature scheme is vulnerable to malicious-but-passive KGC attack where a malicious KGC can forge valid signatures by embedding extra trapdoors in the system parameter.

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Periodical:

Applied Mechanics and Materials (Volumes 519-520)

Pages:

965-968

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.519-520.965

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Online since:

February 2014

Authors:

Lin Cheng*, Qiao Yan Wen

Keywords:

Cryptanalysis, Provable Security, Signature, Standard Model

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* - Corresponding Author

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