Proof-of-Authentication Consensus Algorithm: Blockchain-based IoT Implementation

Sudip Maitra, Venkata P. Yanambaka, Ahmed Abdelgawad, Deepak Puthal, Kumar Yelamarthi

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

26 Scopus citations


Internet of Things (IoT) refers to the network of interconnected smart physical objects that collect and exchange information for enabling smart applications and services. IoT devices are often battery powered and lack computational resources and as a consequence, traditional measures of providing security is not feasible in IoT systems which leads to major security vulnerabilities. Blockchain technology has proven to be a secure medium of transaction in trustless public networks and has the potential to resolve the security vulnerabilities intrinsic to IoT systems. However, reaching consensus throughout a blockchain network is computationally demanding and requires large amount of energy. Moreover, typical transactions in blockchain based applications are slow, compounding the issues in adopting blockchain technology in IoT systems. In this work, a lightweight consensus algorithm called Proof-of-Authentication (PoAh), was implemented on resource-constrained IoT edge nodes and evaluated in terms of latency and energy consumption. The implemented consensus algorithm reduces latency in block validation to 29.35 ms and energy consumption to 44.31 mJ for each transaction, demonstrating promise and potential, to feasibly implement blockchain technology in IoT systems.

Original languageBritish English
Title of host publicationIEEE World Forum on Internet of Things, WF-IoT 2020 - Symposium Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728155036
StatePublished - Jun 2020
Event6th IEEE World Forum on Internet of Things, WF-IoT 2020 - New Orleans, United States
Duration: 2 Jun 202016 Jun 2020

Publication series

NameIEEE World Forum on Internet of Things, WF-IoT 2020 - Symposium Proceedings


Conference6th IEEE World Forum on Internet of Things, WF-IoT 2020
Country/TerritoryUnited States
CityNew Orleans


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