Lightweight Two-Level Session Key Management for End User Authentication in Internet of Things

Authentication and secure communication are challenging in Wireless Sensor Network (WSN) for exchanging confidential information. During recent years, WSN is working in conjunction with Internet of Things (IoT) where sensors sense data, make collaboration and transfer the required information to end users. Authentication and reliable transmission of secure data at end-to-end communication link are challenging in IoT. It requires a lightweight protocol for communication in constrained environments in IoT applications. This paper contributes a Two-level Session Key (TSK) based authentication mechanism for IoT scenario. A node association mechanism is also introduced. TSK provides lightweight and secure communication between end-to-end users. After authenticating and establishing one level session key. The presentation and security investigation give a good reason that the proposed scheme is feasible to set up in a resource constrained environment. Results prove the dominance of TSK over preliminaries and achieve 50% to 100% reduction in energy consumption for communication.