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Subscription identifier privacy in 5G systems
KTH, School of Information and Communication Technology (ICT).
2017 (English)In: 2017 International Conference on Selected Topics in Mobile and Wireless Networking, MoWNeT 2017, Institute of Electrical and Electronics Engineers (IEEE), 2017, article id 8045947Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Privacy is a main concern for mobile network users, and there are many proposed enhancements for the protection of the long-Term subscription identifier. Some enhancements require asymmetric key operations, which increase both processing requirements and protocol message sizes. To the best of our knowledge, there has been no practical implementation feasibility study of these enhancements using commodity mobile devices. Neither is it clear whether the enhancements are sufficient. This paper highlights privacy weaknesses, when the long-Term subscription identifier is used in Paging procedures, and proposes new ways to resolve these. Further, the paper evaluates an Android implementation of one of the enhancements, which includes the asymmetric scheme Elliptic Curve Integrated Encryption Scheme (ECIES). We conclude that it is feasible to implement asymmetric encryption methods for the long-Term subscription identifier and that the highlighted privacy weaknesses can be efficiently countered. This removes another set of obstacles for realizing the protection in mobile network standards.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017. article id 8045947
Keywords [en]
5G, Android, ECIES, IMSI, Paging, Privacy
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-217581DOI: 10.1109/MoWNet.2017.8045947ISI: 000427171100007Scopus ID: 2-s2.0-85032938348ISBN: 9781509049776 OAI: oai:DiVA.org:kth-217581DiVA, id: diva2:1157163
Conference
2017 International Conference on Selected Topics in Mobile and Wireless Networking, MoWNeT 2017, Avignon, France, 17 May 2017 through 19 May 2017
Note

QC 20171115

Available from: 2017-11-15 Created: 2017-11-15 Last updated: 2018-04-03Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
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