A Secure Framework for Communication in Internet of Things Application using Hyperledger based Blockchain

In the era of the Internet of Things(loT) smart devices are connected with wire or wireless way. The IoT devices are capable of sensing the environment and has the ability to transmit that information to the next level. The application area of IoT is Smart city, Smart transportation, Healthcare sector, Agriculture, Monitoring environment. Each of these applications, lots of information are share or transmit among different devices. In the information sharing system among devices, lots of security and privacy challenges exist like data leakage, data modification, device identity. In this paper, authors firstly identify the communication protocols used in IoT application and given their working principle. Secondly, challenges exist in IoT and corresponding Blockchain solution approach are explained, Lastly, the authors proposed a secure architecture based on open Blockchain which can solve some of the challenges in IoT applications.