RT Journal Article
T1 An enhanced symmetric-key based 5G-AKA protocol
A1 Munilla-Fajardo, Jorge
A1 Burmester, Mike
A1 Barco-Moreno, Raquel
K1 Informática
K1 Protocolos de comunicaciones
AB 5G technology is called to support the next generation of wireless communications and realize the “Internet of Everything” through its mMTC (massive Machine-Type-Communications) service. The recently standardized 5G-AKA protocol is intended to deal with security and privacy issues detected in earlier generations. Nevertheless, several 5G-AKA shortcomings have been reported, including a possibly excessive computational complexity for many IoT devices. To address these, a promising lightweight 2-pass authentication and key agreement (AKA) protocol for 5G mobile communications has recently been proposed by Braeken. Compared to the 5G-AKA protocol, this does not require the use of public key encryption. This paper analyzes the security claims of Braeken’s protocol and shows that it does not provide full unlinkability, but only session unlinkability, and is (still) subject to Linkability of AKA Failure Messages (LFM) attacks. We propose solutions to such problems and prove that symmetric-key based protocols cannot offer higher privacy protection levels without compromising availability. We then describe an enhanced version of this protocol that addresses these vulnerabilities and supports forward secrecy, which is a desirable feature for low-cost IoT devices.
PB Elsevier
YR 2021
FD 2021
LK https://hdl.handle.net/10630/22739
UL https://hdl.handle.net/10630/22739
LA spa
NO Jorge Munilla, Mike Burmester, Raquel Barco, An enhanced symmetric-key based 5G-AKA protocol, Computer Networks, Volume 198, 2021,
NO This work was supported in part by Funding for open access charge: Universidad de Málaga/CBUA, FEDER funds (Junta de Andalucía-University of Málaga) under Project UMA18-FEDERJA-172 and by Junta de Andalucía and ERDF under Project UMA-CEIATECH-11, and in part by NSF, USA under Grant 1565215.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026