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Digital Certificates for the Internet of Things
KTH, School of Electrical Engineering (EES), Network and Systems engineering.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis will investigate the possibility of developing a lightweight digitalcertificate solution for resource constrained embedded systems in 6LoWPANnetworks. Such systems are battery powered or energy harvesting devices whereit is crucial that energy consumption and memory footprints are as minimalas possible. Current solutions for digital certificates are found to be moredemanding than what is desirable and therefore an issue that needs to besolved.The solution that is proposed in this thesis is a profile for the X.509 cer-tificate standard for use with constrained devices and the Internet of Things(IoT). Furthermore, a compression mechanism is designed and implementedfor certificates following this X.509 profile.Results show that compressing certificates is a highly viable solution, de-spite the added complexity it brings.This new lightweight digital certificate solution will allow resource con-strained systems to be able to run for longer without being interrupted orneeding maintenance.

Abstract [sv]

Denna avhandling undersöker möjligheten att utveckla lättviktslösning förinbyggda system med begränsade resurser i 6LoWPAN-nätverk. Eneheter isådanna system drivs på batteri och återvunnen energi från omgivningen därminimal energi- och minnesanvänding är avgörande. Nuvarande lösningar fördigitala certifikat anses vara mer krävande än önskvärt och det är därför ettproblem som behöver lösas.Lösningen som presenteras i denna avhandling är en profil för certifikatstan-darden X.509 för användning med begränsade enheter inom Internet of Things(IoT). Utöver det är en komprimeringsmekanism designad och implementeradför certifikat som följer denna X.509-profil.Resultat visar att det är högst genomförbart att komprimera certifikat,trots den ökade komoplexiteten det medför.Denna nya lösning för digitala certifikat tillåter resursbegränsade enheteratt köras längre utan att behöva avbrytas eller underhållas.

Place, publisher, year, edition, pages
2017. , 63 p.
Series
TRITA-EE, ISSN 1653-5146 ; 2017:085
Keyword [en]
Cyber security, constrained devices, digital certificates, Contiki OS, inter- net of things, embedded systems.
Keyword [sv]
Cybersäkerthet, begränsade enheter, digitala certifikat, Contiki OS, inter- net of things, inbyggda system.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-217120OAI: oai:DiVA.org:kth-217120DiVA: diva2:1153958
External cooperation
SICS
Available from: 2017-11-01 Created: 2017-11-01 Last updated: 2017-11-01Bibliographically approved

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