Security analysis of existing IoT key management protocols

The Internet of things (IoT) interconnects every object of our living space to the Internet. Its adoption relies on the settling down of robust security solutions, especially key management ones. In this paper, we address key management protocols in the Internet of things (IoT). Since the IoT interconnects heterogeneous nodes, key management protocols used in the Internet might not be adapted for this type of networks and lightweight protocols are needed for constrained nodes. Thus, it is prime to design a key management solution that takes into account resources constrained nodes and exploits the heterogeneity of objects to help in key computation. We investigate a variety of key management protocols proposed for the IoT. We analyse the advantages and disadvantages of each protocol and give a performance comparison in terms of key management requirements.