Question: With the ECB mode, if there is an error in a block of the ciphertext, during its transmission only the corresponding plaintext block is affected.

With the ECB mode, if there is an error in a

With the ECB mode, if there is an error in a block of the ciphertext, during its transmission only the corresponding plaintext block is affected. However, in the CBC mode, this error propagates. For example, an error in the transmitted C1 obviously corrupts P1 and P2. (see the diagram in the power point lecture) 1. Are any blocks beyond P1 and P2 affected? 2. Suppose that there is a bit error in the source version of P1. Through how many ciphertext blocks is this error propagated? What is the effect at the receiver

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