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Evaluation of the Messaging Layer Security Protocol: A Performance and Usability Study
Linköping University, Department of Electrical Engineering, Information Coding.
2020 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Utvärdering av Messaging Layer Security : En prestanda- och användbarhetsstudie (Swedish)
Abstract [en]

Secure messaging protocols have seen big improvements in recent years, with pairwise messaging now being possible to perform efficiently with high security guarantees and without requiring both participants to be online at the same time. For group messaging the solutions have either provided lower security guarantees or used highly inefficient implementations in terms of computation time and data usage, with pairwise channels between all group members, limiting the possible applications. Work is now ongoing to introduce the Messaging Layer Security (MLS) protocol as an efficient standard with high security guarantees for messaging in big groups.

This thesis examines whether current MLS implementations live up to the promised performance properties and compares them to the popular Signal protocol. In general the performance results of MLS are promising and in line with expectations, providing improved performance compared to the Signal protocol as group sizes increase. Two proof of concept applications are created to prove the viability of using MLS in realistic scenarios, one for video calls and one for mobile messaging.

Place, publisher, year, edition, pages
2020. , p. 34
Keywords [en]
Messaging Layer Security, MLS, Signal, messaging, security, performance, evaluation
National Category
Computer Engineering
Identifiers
URN: urn:nbn:se:liu:diva-163307ISRN: LiTH-ISY-EX--20/5274--SEOAI: oai:DiVA.org:liu-163307DiVA, id: diva2:1388449
External cooperation
Sectra Communications AB
Subject / course
Computer Engineering
Presentation
2020-01-17, Hammingrummet, Linköping, 15:15 (English)
Supervisors
Examiners
Available from: 2020-02-03 Created: 2020-01-24 Last updated: 2020-02-03Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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
  • text
  • asciidoc
  • rtf