Question: S-boxes in block cipher is Question 4 options: a substitution function that introduces nonlinearity and adds to the complexity of the transformation a substitution function

S-boxes in block cipher is Question 4 options: a substitution function that introduces nonlinearity and adds to the complexity of the transformation a substitution function that makes encryption much faster a substitution function that reduces the complexity of shifting and permutation a substitution function that generates session keys to make cipher hard to break

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