Question: 3 . With the ECB mode, if there is an error in a block of transmitted ciphertext, only the corresponding plaintext block is affected. However,

3 .

With the ECB mode, if there is an error in a block of transmitted ciphertext, only the corresponding plaintext block is affected. However, in the CBC mode, this error propagates. For example, an error in the transmitted C

1 (

Figure

7.4

of textbook

)

obviously corrupts P

1

and P

2 .

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