Securing the Internet of Things: A Blockchain Paradigm

A global network of “things” that can be virtual or physical and are connected to the internet is known as the Internet of Things (IoT), a relatively new technology. Industry, smart housing, smart health care, smart irrigation, and many other areas are just a few of the many uses for IoT. A big problem is storing all of the massive amounts of data that the sensors produce. IoT devices have significant security and privacy risks since they are dynamic, resource-constrained, and have little processing power. The main obstacles are data privacy, scalability, third-party risk, trusted data origin, and Access control. The major security and privacy concerns related to IoT at various IoT architecture layers are the main emphasis of this article. This study offers Blockchain as a Solution to address these issues. The Internet of Things can be made more secure by using blockchain technology. A blockchain is made up of a series of blocks, each of which has several transactions that record events and keep accurate records of data. It can resolve the problems that IoT is facing. However, due to differences between Blockchain and IoT, it also faces numerous constraints. This study outlines the difficulties in mixing blockchain technology with the Internet of Things and explores a few unresolved concerns, laying the foundation for future research directions.