Secure Wireless Multicasting of RIS-Aided Wireless Communication Networks

This research paper focuses on assessing the security performance of wireless communication networks assisted by reconfigurable intelligent surfaces (RIS) in scenarios involving multiple receivers and multiple eavesdroppers. Specially, an RIS is placed between the source and receivers to improve the link security. To illustrate the effect of various key parameters, such as the channels' average signal-to-noise ratio (SNR), the number of reflecting elements within the RIS, and the number of eavesdroppers and receivers, we derive closed-form analytical expressions for the secure outage probability for multicasting (SOPM) and the probability of non-zero secrecy multicast capacity (PNSMC). Finally, we validate the accuracy of our analytical results through Monte-Carlo simulations.