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Which mode of operation has the worst “error propagation” among the following?

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in Cryptograph & Network Security by (60.1k points)
Which mode of operation has the worst “error propagation” among the following?

(a) OFB

(b) CFB

(c) CBC

(d) ECB

The question was asked in an international level competition.

Enquiry is from DES Modes of Operation in chapter Advanced Encryption Algorithm and Block Cipher Operation of Cryptograph & Network Security

1 Answer

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Correct choice is (d) ECB

To explain: The ECB or electronic code book mode of operation propagates the most errors. A single bit error is carried onto the next block and so on.

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