Blockchain for IoT Access Control, Security and Privacy: A Review

In modern era, blockchain technology is gaining a major attention among researchers and scientists for different scopes such as access control, data security, privacy and decentralization of the wireless networks. Though blockchain offers several benefits like peer to peer technology, anonymity, increased capacity, better security; the main cause behind being the first choice is its immutable structure. To abolish the role of the reliable third-party within interconnected networks, blockchain can be used as a key technology because of its distributed nature. Hyperledger fabric, IBM Blockchain, Ethereum, Ripple, R3 Corda, multichain are the most prominent blockchain platforms available for implementation. Aforementioned review paper describes and analyzes the existing blockchain based security techniques pertaining to IoT access control, vehicular ad hoc networks, healthcare, and supply chain. The comprehensive survey of use cases of blockchain will serve as a state-of-the-art for the researchers to carry out cutting edge research work in the pursuance of blockchain technology in various fields.