Cryptology ePrint Archive: Report 2021/359

Cryptanalysis on 'An efficient identity-based proxy signcryption using lattice'

Zi-Yuan Liu and Yi-Fan Tseng and Raylin Tso

Abstract: In this note, we conduct a cryptanalysis of the paper published by Zhu et al. on Future Generation Computer Systems in 2021. We demonstrate that their quantum-resistant identity-based proxy signcryption scheme cannot achieve the confidentiality as they claimed.

Category / Keywords: public-key cryptography / Cryptanalysis, Identity-based, Proxy signcryption, Lattice-based cryptosystem

Date: received 17 Mar 2021

Contact author: zyliu at cs nccu eud tw

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Version: 20210318:094503 (All versions of this report)

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