Question: (B-DES) Create a 12 bits string plaintext and random key K of 9 bits. Calculate the corresponding ciphertext when you perform two rounds of the

(B-DES) Create a 12 bits string plaintext and random key K of 9 bits. Calculate the corresponding ciphertext when you perform two rounds of the Feistel structure using the simplified version of DES described in the two linked sources. Verify that the decryption procedure works.

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