A lightweight consensus and trust mechanism for access control in Blockchain-based IoT networks

• Afonso Barbosa de Souza Neto Universidade Federal do Ceará
• Paulo A. L. Rego Universidade Federal do Ceará
• Marcos D. Ortiz Universidade Federal do Ceará

DOI: https://doi.org/10.5753/sbrc.2019.7396

Abstract

Since its creation, the Internet has undergone several transformations, among them the Internet of Things (IoT), which is composed of a set of objects connected to the Internet in order to provide services to users. The idea is to connect the physical and digital world. To ensure the security of devices and users, security mechanisms need to meet the characteristics inherent to IoT. In this context, this paper proposes a security mechanism for IoT based on Blockchain technology, which is a model that seeks decentralization as a security measure. We use the same concept of Blockchain applied in crypto-coins, but with a consensus mechanism based on trust between nodes. A prototype of the solution was developed and evaluated to demonstrate that the proposed solution is capable of obtaining consistent results.

Keywords: Internet of Things, Security, Blockchain

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