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Journal of Information Security and Applications

Flaw and amendment of a two-party authenticated key agreement protocol for post-quantum environments

Vivek Dabra, Anju Bala, Saru Kumari

Published Jun 22, 2021• 7 citations
Publisher
DOI
10.1016/j.jisa.2021.102889

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Key agreement is a fundamental activity to establish communication between two parties. Kim et al. (2013) proposed a CertificateLess two-party authenticated key agreement (CTAKA) protocol, which is secure in extended Canetti-Krawczyk (eCK) model. This paper describes the security flaw of Kim et al.'s CTAKA protocol, which is found vulnerable against Key-Compromise Impersonation (K-CI) attack. For the resistance of the attack in Kim et al.'s CTAKA protocol, a defensive measure has been proposed, which is secure in eCK model.
Key agreement is a fundamental activity to establish communication between two parties. Kim et al. (2013) proposed a CertificateLess two-party authenticated key agreement (CTAKA) protocol, which is secure in extended Canetti-Krawczyk (eCK) model. This paper describes the security flaw of Kim et al.'s CTAKA protocol, which is found vulnerable against Key-Compromise Impersonation (K-CI) attack. For the resistance of the attack in Kim et al.'s CTAKA protocol, a defensive measure has been proposed, which is secure in eCK model.