1. We have encrypted a three-block message with CFB mode. A 1-bit error occurred in the second ciphertext block. Draw a mode decryption diagram that shows which plaintext bits are affected by error...

1. We have encrypted a three-block message with CFB mode. A 1-bit error occurred in the second ciphertext block. Draw a mode decryption diagram that shows which plaintext bits are affected by error propagation.

2. We have encrypted a five-block message with CFB mode. An attacker rearranged blocks 2 and 3. Draw a mode decryption diagram that shows which plaintext bits are affected by error propagation.