Securing Communication in MQTT enabled Internet of Things with Lightweight security protocol

This paper proposes a security algorithm for Internet of Things (IoT) using simple lightweight cryptographic operations. The main advantage of the proposed algorithm is the simplicity, energy efficiency and the speed of algorithm such that it can be computed quickly using a low-power microcontroller. The encryption of the sensed data is performed using simple operations so as to consume smaller amount of node energy. To test the effectiveness, of the proposed algorithm, an experimental rig is set up to implement the proposed algorithm. The analysis confirms that the proposed algorithm provides end-to-end encryption and imparts security against likely attacks such as brute force attack, spoofing attack, and has small code footprint. It is envisaged that the algorithm can be very useful in securing message transmissions in Internet of Things.