Question: Alice sends a document to you using DES, PKCS5 padding, the CBC mode of operation, and the following parameters: Key = CSE@YORK (expressed as an

Alice sends a document to you using DES, PKCS5 padding, the CBC mode of operation, and the following parameters:

Key = "CSE@YORK" (expressed as an English string)

IV = 0x 0123456701234567

You receive the following ciphertext: 0x ????????????????4E51297B424F90D8B2ACD6ADF010DDC4

As you can see, noise in the channel has unfortunately garbled the first received block (indicated by '?' above). Can you recover any part of the plaintext? If yes, then salvage that part and write it (as an English string, not in hex or binary). Otherwise, explain why it is not possible to salvage any part of the plaintext.

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