Blockchain in Internet of Things: a Systematic Literature Review

Internet of Things (IoT) devices are rapidly increasing in acceptance and proliferation such as smart home devices, wearable devices and industrial systems; all of those devices are connected simultaneously in centralized client/server model and requires to be authenticated through the server, for that the security issues become more challengeable. So, moving the IoT system into the decentralized path is the right solution to get rid of those security issues. One of the best common decentralization systems is a Blockchain (BC), which can address a lot of IoT issues, and as especially access control issues. In this paper, and through the processes of automated search and selection, this study obtains some studies publications in the field BC in IoT Recently published; and we conducted an extensive literature review to understand status of applying BC based solutions for IoT. In addition, we also highlighted issues pertaining to IoT, and displaying the studies contributions, and methodologies used to get rid of those issues pertaining to IoT by using BC features, this studies indicates through their Findings that the research in BC is becoming more prominent and requires more effort in developing new methodologies and framework to integrate BC.