Secure machine to machine communication in industrial internet of things

In todays world, Internet of Things (IoT), is an emerging technology, where many smart devices are connected with each other. The rapidly growing deployment of IoT in real-world applications and the advancement in technology has attracted the concept of Industrial Internet of Things (IIoTs). The large number of applications such as smart oil and gas industry, smart transportation, smart grid, smart health-care and smart metering are the few examples of the use of smart devices in IIoTs. These intelligent devices have the capabilities of sensing, actuating, storing, and processing of the data, and it causes challenge-able problems (e.g., communication security and reliability) in the network. In this book chapter, first we present the key benefits and challenges of the use of IoT technologies in today’s industries. Second, to address few of the identify challenges, we propose SCOUT, which is a secure machine to machine communication technique for IIoTs. In particular, SCOUT makes efficient use of the Routing Protocol for Low Power and Lossy Networks (RPL), the de facto routing protocol for IoT and an optimized remote software attestation algorithm to improve the communication security and scalability in large scale heterogeneous IIoT network scenarios. Finally, to show the deployment feasibility and working efficiency of SCOUT, we explain it with a real-world industrial use case.