On security of a certificateless signcryption scheme

Authors:
Songqin Miao;Futai Zhang;Sujuan Li;Yi Mu
Affiliations:
School of Computer Science and Technology, Nanjing Normal University, PR China;School of Computer Science and Technology, Nanjing Normal University, PR China and Jiangsu Engineering Research Center on Information Security and Privacy Protection Technology, Nanjing, PR China;School of Computer Science and Technology, Nanjing Normal University, PR China;Centre for Computer and Information Security Research, School of Computer Science and Software Engineering, University of Wollongong, Australia
Venue:
Information Sciences: an International Journal
Year:
2013

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Abstract

It would be interesting if a signcryption scheme in the standard model could be made certificateless. One of the interesting attempts is due to Liu et al. [Z. Liu, Y. Hu, X. Zhang, H. Ma, Certificateless signcryption scheme in the standard model, Information Sciences 180 (3) (2010) 452-464]. In this paper, we provide a cryptanalysis on this scheme by depicting two kinds of subtle public key replacement attacks against it. Our analysis reveals that it does not meet the basic requirements of confidentiality and non-repudiation.