Genetic algorithm with Walsh-Hadamard Spectrum cost function generates 8x8 S-boxes with nonlinearity 104 in average 49,399 iterations at 100% success rate, matching best-known methods.
We analyze the performance of the algorithm across various parameter configurations and discuss the implications of our findings
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Evolutionary Approach to S-box Generation: Optimizing Nonlinear Substitutions in Symmetric Ciphers
Genetic algorithm with Walsh-Hadamard Spectrum cost function generates 8x8 S-boxes with nonlinearity 104 in average 49,399 iterations at 100% success rate, matching best-known methods.