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Direct Construction of Optimal Rotational-XOR Diffusion Primitives
2017
IACR Transactions on Symmetric Cryptology
As a core component of SPN block cipher and hash function, diffusion layer is mainly introduced by matrices built from maximum distance separable (MDS) codes. Up to now, most MDS constructions require to perform an equivalent or even exhaustive search. In this paper, we study the cyclic structure of rotational-XOR diffusion layer, a commonly used diffusion primitive over (𝔽b2)n, which consists of only rotation and XOR operations. First, by providing some novel properties on this class of
doi:10.13154/tosc.v2017.i4.169-187
dblp:journals/tosc/GuoLGWL17
fatcat:yptvjuhubja2ne4yp3htpri4da