One-Stop-Shop for the Security of IoT with Blockchain: A Systematic Literature Review

The Internet of Things (IoT) is one of the most emerging technologies, specially with the introduction of smart cities, smart homes, etc., anticipating fifty billion connected devices. IoT devices are usually limited in their processing, storage, and network bandwidth, and are more vulnerable to attacks that can be easily hacked and compromised. As IoT deals with personal life, so its security is one of the most critical challenges that need to resolve before its adoption. Distributed Ledger Technology (DLT), especially blockchain, is a relatively new technology that deals with the distributed immutable ledger. DLT is a promising technology that may solve the security issues of IoT. So a study needs to be done to know what security challenges of IoT can be solved using DLT and what are the ways in which DLT can be used to increase security. In this paper, first, we have set the research questions, then the systematic literature review has been done in view of research questions, then answers to research questions are presented, and discussion about the answers to research questions have been presented. A solution has been proposed that can be used to increase the security of IoT. Based on the review results, the paper concludes with the suggestions for using blockchain for IoT security.