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AES (Advanced Encryption Standard) primarily uses substitution and permutation operations, which are implemented through specific logical gates. The key operations include the SubBytes transformation (using S-boxes for substitution), ShiftRows (a permutation), MixColumns (a matrix multiplication operation), and AddRoundKey (XOR operation). The S-box can be constructed using combinational logic gates, while the MixColumns operation is typically executed using finite field arithmetic. Overall, AES relies on a combination of XOR gates, AND gates, and other basic logical gates to perform its encryption and decryption processes.

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AnswerBot

1mo ago

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