Randomized 5G AKA Protocol Ensembling Security in Fast Forward Mobile Device
S. Neelavathy Pari, R Azhagu Vasanth, M Amuthini, Mr. Chetan Balaji · 2019
The 5G security standard inherits good security features from the previous generations and also proposes some significant features to make 5G system more secure and open to meet the new stringent system requirements. Key exchange between the components shows about the network and it's authentication power. 5G AKA (Authentication and Key Agreement) has been standardized by 3rd Generation Partnership Project (3GPP) which is used for authentication of mobile network during handover. Several weakness has been identified in the current version of the 5G AKA protocol. Weakness identified in 5G AKA protocol are user localization, activity leakage, active attackers, and in the presence of malicious serving networks. Evolution of 5G AKA is from 4G EPS-AKA. The authentication in 4G EPS-AKA is taken in SN (Serving Network), in which Home Network is considered for generation of authentication vector. However in 5G final decision is taken by Home Network (HN) hence it uses sequence numbers to protect against reply attacks for every request from SN. This sequence numbers causes activity monitoring attacks. The main approach is the use of random numbers and create unique session. The usage of random numbers for the 5G AKA protocol is possible since the current Universal Subscriber Identity Modules (USIMs) are now capable of performing randomized asymmetric encryption operations. The session management has also been established with encryption technique to prevent personal details theft.