Cryptanalysis of certificateless authenticated key agreement protocols. (9th July 2020)

• Record Type: Journal Article
• Authors: Zeng, Runzhi; Wang, Libin
• Is Part Of: International journal of ad hoc and ubiquitous computing. Volume 34:Number 4(2020)
• Page Start: 249
• Page End: 257
• Publication Date: 2020-07-09
• Subjects: certificateless public cryptography -- certificateless key agreement -- authenticated key agreement -- AKA -- eCK model -- extended eCK model -- security analysis -- cryptanalysis -- without pairing; Ubiquitous computing -- Periodicals; Embedded computer systems -- Periodicals; Electronic data processing -- Distributed processing -- Periodicals; Wireless communication systems -- Periodicals; Computer architecture -- Periodicals; 004.2
• Languages: English
• ISSNs: 1743-8225

Abstract

In this work, we cryptanalyse two certificateless authenticated key agreement (CL-AKA) protocols, Bala et al. (2018) and Xie et al. (2019), which are recently proposed claiming provable security. Specifically, we show impersonation attacks against the two protocols with successful probability 1 in extended eCK model using at most two queries. Then, the process of our cryptanalysis is abstracted to a general method for cryptanalysing a specific class of CL-AKA protocols which we call linearly-expressible CL-AKA protocol . Our method suggests new security requirements of CL-AKA protocols.