Linear Self-Symmetries of Inverse-Based S-boxes: Generic Rigidity and Applications↗ (원문, 새 창)

본문 미리보기

arXiv:2610.29837v1 Announce Type: new Abstract: Finite-field inversion is a basic nonlinear building block in the design of S-boxes for symmetric cryptography. In inverse-based S-boxes, finite-field inversion is often combined with linear or affine layers that may preserve or destroy algebraic symmetries of the inverse function. We study how often nontrivial linear self-symmetries remain as the outer invertible linear transformation varies over \(GL_n(\mathbb F_2)\). Using the classification of