A decentralized lightweight blockchain-based authentication mechanism for IoT systems

Umair Khalid, Muhammad Asim, Thar Baker, Patrick C.K. Hung, Muhammad Adnan Tariq, Laura Rafferty

Research output: Contribution to journalArticlepeer-review


The Internet of Things (IoT) is an emerging paradigm branded by heterogeneous technologies composed of smart ubiquitous objects that are seamlessly connected to the Internet. These objects are often deployed in open environments to provide innovative services in various application domains such as smart cities, smart health, and smart communities. These IoT devices produce a massive amount of confidentiality and security-sensitive data. Thus, security of these devices is very important in order to ensure the safety and effectiveness of the system. In this paper, a decentralized authentication and access control mechanism is proposed for lightweight IoT devices and is applicable to a large number of scenarios. The mechanism is based on the technology of the fog computing and the concept of the public blockchain. The results gained from the experiments demonstrate a superior performance of the proposed mechanism when compared to a state-of-the-art blockchain-based authentication technique.

Original languageEnglish
Pages (from-to)2067-2087
Number of pages21
JournalCluster Computing
Issue number3
Publication statusPublished - 10 Feb 2020

Bibliographical note

Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.


  • Authentication
  • Blockchain
  • Fog computing
  • Internet of Things
  • Smart city


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