2 papers
cs.IT2026
Permutation Polynomials Under Multiplicative-Additive Perturbations: Characterization via Difference Distribution Tables
Ranit Dutta, Pantelimon Stanica, Bimal Mandal
We investigate permutation polynomials F over finite fields F_{p^n} whose generalized derivative maps x -> F(x + a) - cF(x) are themselves permutations for all nonzero shifts a. Th…
cs.CR2026
Extended c-differential distinguishers of full 9 and reduced-round Kuznyechik cipher
Pantelimon Stanica, Ranit Dutta, Bimal Mandal
This paper introduces {\em truncated inner -differential cryptanalysis}, a technique that enables the practical application of -differential uniformity to block ciphers. Whil…