2026-05-27T05:23:52Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/227392026-02-03T11:32:13Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Munilla-Fajardo, Jorge
author
Burmester, Mike
author
Barco-Moreno, Raquel
2021-08-25T09:01:59Z
2021-08-25T09:01:59Z
2021
Jorge Munilla, Mike Burmester, Raquel Barco, An enhanced symmetric-key based 5G-AKA protocol, Computer Networks, Volume 198, 2021,
https://hdl.handle.net/10630/22739
https://doi.org/10.1016/j.comnet.2021.108373
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.
spa
Informática
Protocolos de comunicaciones
An enhanced symmetric-key based 5G-AKA protocol
journal article
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URL
https://riuma.uma.es/bitstreams/0ff21b96-da4a-4439-ae83-ed0ded07a6bd/download
File
MD5
a9c0822d99b52c85e818ae2966eec521
894215
application/pdf
Braeken_enhancement_new_v7.pdf