Cryptanalysis of an Authentication Scheme Using an Identity Based Generalized Signcryption

Abdul Waheed, Arif Iqbal Umar, Nizamud Din, Noor Ul Amin, Saleem Abdullah and Poom Kumam
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Abdul Waheed: Department of Information Technology, Hazara University, Mansehra 21120, KP, Pakistan
Arif Iqbal Umar: Department of Information Technology, Hazara University, Mansehra 21120, KP, Pakistan
Nizamud Din: Department of Computer Science, University of Chitral, Chitral 17200, KP, Pakistan
Noor Ul Amin: Department of Information Technology, Hazara University, Mansehra 21120, KP, Pakistan
Saleem Abdullah: Department of Mathematics, AWKUM University, Mardan 23200, KP, Pakistan
Poom Kumam: Department of Mathematics, King Mungkut’s University of Technology Thonburi, Bangkok 10140, Thailand

Mathematics, 2019, vol. 7, issue 9, 1-8

Abstract: Secure data transmission is a challenging issue in modern data communication. ID based generalized signcryption is a cost effective security primitive which provides authentication or confidentiality, or jointly confidentiality and authentication. Wei’s proposed an ID based generalized signcryption scheme for authentication and confidentiality of big data in a standard model, claiming that their scheme holds the security of indistinguishability against adaptive chosen-ciphertext attacks and existential unforgeability against adaptive chosen message attacks. In this paper, we analyzed Wei’s scheme by launching security attacks on the scheme to check its validity. As a result, it became clear and proved that the master secret key generated in the scheme is compromisable. Similarly, the mentioned scheme does not hold the security of indistinguishability against adaptive chosen-ciphertext attacks and existential unforgeability against adaptive chosen message attacks. Consequently, Wei’s schemes is prone to attacks and is insecure.

Keywords: cryptanalysis; encryption; digital signature; malicious-but-passive; Key Generation Center (KGC); ID based generalized signcryption; security model; standard model (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2019
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