Feistel Cipher Structure | Feistel network | Feistel cipher encrytion and decryption | 16 rounds of encryption and decryption in feistel cipher

Feistel cipher - Alchetron, The Free Social Encyclopedia

SOLVED: DES is based on Feistel network. Let’s assume that we are usinga MODIFIED VERSION of DES that takes 8-bit data block as an inputand has only 2 rounds without initial and final permutations. Alsoassume that a modified mangler function for round i in Feistelnetwork is used in Feistel network; and the function is defined asfi(x, K) = (5i · K)x mod 15 where x andK are plaintext block and key, respectively and i = 1, 2. If thekey K=5 (for both rounds) and ciphertext is 11001001, what isplaint