A Dual Approach Cryptographic Model for Video Transmission Based on Association Schemes

The security of video data requires cryptographic techniques that are resilient to both classical and quantum threats. This study presents an encryption framework based on association schemes and algebraic combinatorial tools that enable systematic and secure data transformations. In the classical setting, video encryption is achieved through random matrix transformations applied to the relations of an association scheme, producing secure and imperceptible ciphertext. Experimental evaluations, including statistical and error analyses, confirm the robustness and efficiency of the proposed method. We extend the framework to quantum cryptography by exploring unitary encryption operators derived from the Bose–Mesner algebra of association schemes. These operators are used to encrypt quantum-encoded multimedia data. The results demonstrate the potential of association schemes to support secure multimedia encryption in both classical and quantum domains.