Substitution permutation network [spn], i.e. cipher composed of a number of stages

Official title: {Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms}

H04L9/0631 (Substitution permutation network [spn], i.e. cipher composed of a number of stages) appears on 1,495 US grants and 1,728 published applications in this corpus.