The College of Science at the University of Basrah organized a seminar titled "Optical Security Using a Random Phase Mask Based on Phase Truncation," presented by graduate student Abbas Fadhel Mohammed. This study aims to propose a new optical encryption system, which includes integrating a random phase encryption technique based on the phase truncation method with both spatial encryption and random coefficient decomposition, with the aim of enhancing the efficiency of the security system and improving its ability to resist attacks.