Design and evaluation of an IoT enabled secure multi-service Ambulance Tracking System

The Internet of Things (IoT) systems enable the communication of a diverse suite of devices and objects, however it is known that security is one of the major problems in these systems. This is mainly due to the fact that IOT devices work with very limited computational power and energy budget and conventional cryptographic techniques will be too expensive. To this end, we propose a novel hybrid security protocol and demonstrate its suitability through a real time ambulance service tracking application. First, we discuss practical problem that is of lack of information shared during transfer of a patient in ambulance to hospital. We provide a solution to this with an IOT enabled ambulance tracking system. Second, we provide a secure protocol for IoT devices specific to the tracking system. The protocol uses implementation of AES-CCM optimized for IoT devices. It provides the basic communication requirements such as confidentiality, authentication and data integrity. The system work in a Server-Client model and we use dual channel to communicate with the IoT module. One secure channel (SMS), through which key exchange occurs, and one insecure(Internet), through which encrypted data is transferred. Finally, we present the evaluation metric of the proposed system including memory footprint and energy consumption.