Cryptanalysis of a Pairing-free Certificateless Signcryption scheme | Zendy

Philemon Kasyoka | Zendy; Michael Kimwele | Zendy; Shem Mbandu Angolo | Zendy

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Cryptanalysis of a Pairing-free Certificateless Signcryption scheme

Author(s) -

Philemon Kasyoka,

Michael Kimwele,

Shem Mbandu Angolo

Publication year - 2020

Publication title -

ict express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.733

H-Index - 22

ISSN - 2405-9595

DOI - 10.1016/j.icte.2020.07.006

Subject(s) - signcryption , cryptanalysis , scheme (mathematics) , cryptographic primitive , cryptography , computer science , authentication (law) , computer network , confidentiality , theoretical computer science , public key cryptography , cryptographic protocol , computer security , mathematics , encryption , mathematical analysis

Signcryption is a very useful cryptographic primitive that aims to achieve authentication and confidentiality and in an efficient manner. We cryptanalyze the signcryption scheme of Luo and Ma (2019) which is claimed to be secure. Further, we propose a corresponding modification to show how their signcryption scheme can be made more secure in our proposed signcryption scheme. The security analysis is also applicable to other signcryption schemes with similar design.

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