A blockchain-based trust system for the internet of things

Roberto Di Pietro, Xavier Salleras, Matteo Signorini, Erez Waisbard

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

85 Scopus citations

Abstract

One of the biggest challenges for the Internet of Things (IoT) is to bridge the currently fragmented trust domains. The traditional PKI model relies on a common root of trust and does not fit well with the heterogeneous IoT ecosystem where constrained devices belong to independent administrative domains. In this work we describe a distributed trust model for the IoT that leverages the existing trust domains and bridges them to create endto- end trust between IoT devices without relying on any common root of trust. Furthermore we define a new cryptographic primitive, denoted as obligation chain designed as a credit-based Blockchain with a built-in reputation mechanism. Its innovative design enables a wide range of use cases and business models that are simply not possible with current Blockchain-based solutions while not experiencing traditional blockchain delays. We provide a security analysis for both the obligation chain and the overall architecture and provide experimental tests that show its viability and quality.

Original languageEnglish
Title of host publicationSACMAT 2018 - Proceedings of the 23rd ACM Symposium on Access Control Models and Technologies
PublisherAssociation for Computing Machinery
Pages77-83
Number of pages7
ISBN (Electronic)9781450356664
DOIs
StatePublished - 7 Jun 2018
Externally publishedYes
Event23rd ACM Symposium on Access Control Models and Technologies, SACMAT 2018 - Indianapolis, United States
Duration: 13 Jun 201815 Jun 2018

Publication series

NameProceedings of ACM Symposium on Access Control Models and Technologies, SACMAT

Conference

Conference23rd ACM Symposium on Access Control Models and Technologies, SACMAT 2018
Country/TerritoryUnited States
CityIndianapolis
Period13/06/1815/06/18

Bibliographical note

Publisher Copyright:
© 2018 Association for Computing Machinery.

Keywords

  • Access control
  • Blockchain
  • Distributed ledger
  • IoT
  • Security

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