Question: 5.7. As is so often true in cryptography, it is easy to weaken a seemingly strong scheme by small modifications. Assume a variant of the


5.7. As is so often true in cryptography, it is easy to weaken a seemingly strong scheme by small modifications. Assume a variant of the OFB mode by which we only feed back the 8 most significant bits of the cipher output. We use AES and fill the remaining 120 input bits to the cipher with 0s
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