Question: S-boxes in block ciphers serve as: Question 7 options: A substitution function that introduces nonlinearity, increasing the complexity of the transformation A substitution function aimed

S-boxes in block ciphers serve as: Question 7 options: A substitution function that introduces nonlinearity, increasing the complexity of the transformation A substitution function aimed at speeding up encryption A substitution function designed to simplify shifting and permutation A substitution function used for generating session keys to enhance security

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