Question: Alice encrypts a message using AES and sends the ciphertext to Bob. Unfortunately, during the transmission, the 2 nd bit of the third block in

Alice encrypts a message using AES and sends the ciphertext to Bob.

Unfortunately, during the transmission, the

2

nd bit of the third block in the ciphertext is corrupted. How much of the plaintext can Bob still recover if the mode of encryption is one of the following: CFB

,

or CTR

?

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