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I ofb mode the entire cipher text block 11 is corrupted r


Problem

1. In CFB mode, bits 3 to 6 in cipher text block 11 are corrupted (r= 8). Find the possible corrupted bits in the plaintext.

2. In CTR mode, blocks 3 and 4 are entirely corrupted. Find the possible corrupted bits in the plaintext.

3. In OFB mode, the entire cipher text block 11 is corrupted (r = 8), Find the possible corrupted bits in the plaintext.

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Computer Engineering: I ofb mode the entire cipher text block 11 is corrupted r
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