Secure end-to-end communication for constrained devices in IoT-enabled Ambient Assisted Living systems

The Internet of Things (IoT) technologies interconnect broad ranges of network devices irrespective of their resource capabilities and local networks. In order to upgrade the standard of life of elderly people, Ambient Assisted Living (AAL) systems are also widely deployed in the context of IoT applications. To preserve user security and privacy in AAL systems, it is significant to ensure secure communication link establishment among the medical devices and the remote hosts or servers that are interested in accessing the critical health data. However, due to the limited resources available in such constrained devices, it is challenging to exploit expensive cryptographic operations in the conventional security protocols. Therefore, in this paper we propose a novel proxy-based authentication and key establishment protocol, which is lightweight and suitable to safeguard sensitive data generated by resource-constrained devices in IoT-enabled AAL systems.