Structural cryptanalysis and storage efficiency of Kronecker-product diffusion layers for lightweight block ciphers
Matrix-based linear transformations are fundamental to the diffusion properties of modern block ciphers. This paper investigates the algebraic structure and security of the Dual-Matrix Affine Modular construction \(C\equiv K_LMK_R+K_S\pmod p.\) Although it is structurally isomorphic to a constrained affine map on \(\m...