Question: Consider a Feistel cipher with four rounds. Then the plaintext is denoted as P = ( L 0 , R 0 ) and the corresponding

Consider a Feistel cipher with four rounds. Then the plaintext is denoted as P =( L0, R0) and the corresponding ciphertext is C =( L4, R4). What is the simplest form of the ciphertext C, in terms of L0, R0, and the subkeys, for the round function F( Ri-1, Ki )= Ki ?

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