Dynamic Approach to Secure Smart City Applications (DCESA)

In recent years, metropolises around the world have begun filling their infrastructures with sensors to facilitate the everyday lives of citizens and to collect data as much as possible to feed their information systems. Wireless sensor networks will become increasingly essential for smart city applications and all decisions will depend largely on the collected data. However, wireless sensor networks can be the target of different types of attacks, which can have a negative impact on the normal functioning of applications. Different approaches based on elliptic curves have been proposed to protect heterogeneous sensor networks but these are not valid for smart city applications. We have proposed an algorithm based on a mobile cluster head to create a dynamic cluster during each passage by the processing station and which allows generating, distributing and periodically rekeying light cryptographic keys based on elliptic curves.