Cryptology ePrint Archive: Report 2010/092

Security Weaknesses in Two Certificateless Signcryption Schemes

S.Sharmila Deva Selvi and S.Sree Vivek and C.Pandu Rangan

Abstract: Recently, a certificateless signcryption scheme in the standard model was proposed by Liu et al. in \cite{LiuHZM10}. Another certificateless signcryption scheme in the standard model was proposed by Xie et al. in \cite{WZ09}. Here, we show that the scheme in \cite{LiuHZM10} and \cite{WZ09} are not secure against Type-I adversary.

Category / Keywords: public-key cryptography /

Date: received 20 Feb 2010

Contact author: sharmioshin at gmail com, ssreevivek@gmail com

Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation

Version: 20100222:131051 (All versions of this report)

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