Privacy is a main concern for mobile network users, and there are many proposed enhancements for the protection of the long-term subscription identifier (IMSI). In this paper we present our practical experiments and conclude that it is feasible to implement asymmetric encryption methods for enhancing privacy of the long-term subscription identifier and that the highlighted privacy weaknesses can be efficiently countered.

Authors:

Prajwol Kumar Nakarmi, Mats Näslund, Karl Norrman, Ericsson Research;
Enrique Cobo Jiménez, School of Electrical Engineering Royal Institute of Technology (KTH)

Download paper - Subscription Identifier Privacy in 5G Systems


Presented 2017-05, MoWNet’17, International conference on selected topics in Mobile and Wireless Networking


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