Doctorate thesis defense of Rihem Ben Romdhane

Doctorate thesis defense on December 6^th 2024 at 11H00 AM ,in Amphitheater Ibn Kholdoun, SUP'COM 2.

Entitled :Design and validation of homomorphic cryptographic schemes in IOT

Presented by :Rihem Ben Romdhane

Committee

Abstract

The rapid advancement of wireless communications and the emergence of the Internet of Things (IoT) have transformed interactions between individuals and their environments, creating a fully connected "smart" world. However, the proliferation of IoT devices generates vast amounts of sensitive data, raising significant privacy and security challenges. This thesis addresses these challenges within the context of smart grid networks and advanced metering infrastructure (AMI), where privacy concerns related to energy consumption data are paramount.

We propose a series of homomorphic cryptographic schemes designed to protect sensitive data while accommodating the resource constraints of IoT devices. Our contributions include: (1) a privacy-preserving data aggregation scheme for energy management, (2) a lattice-based homomorphic approach for smart household appliances, (3) a privacy-preserving time-of-use billing protocol, and (4) a comprehensive scheme that integrates demand management and billing through spatial and temporal data aggregation using the Paillier homomorphic cryptosystem. This research aims to enhance privacy preservation in IoT applications, ensuring secure data handling while addressing the unique needs of various metering purposes.

Keywords

IOT, Smart grid, Homomophic encryption, privacy