CASK: Conditional Authentication and Session Key Establishment In Fog-assisted Social IoT Network

The Fog-assisted Social Internet of Things (FSIoT) is an emergent paradigm that brought new opportunities in terms of service provisioning in the IoT-Fog network. Therefore, in such environment, the establishment of secure and trust communication scheme is a crucial need between peer IoT devices having similar social profiles. In this context, we propose a Conditional Authentication and Session Key establishment (CASK)-Algorithm for a fog-assisted Social IoT environment. The algorithm allows users profile matching before establishing the authenticated session key. CASK is performed using ECC and one_way hash function. Comparing to the existing works, our solution presents many advantages in terms of security aspects, efficiency, social-awareness and reduced computation overheads.