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Confidentiality can only be provided if we perform message encryption before the MAC generation.

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Confidentiality can only be provided if we perform message encryption before the MAC generation.

(a) True

(b) False

The question was asked in an interview for internship.

This intriguing question originated from Message Authentication Codes (MACs) topic in chapter Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

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Best answer
Correct option is (b) False

The best explanation: Confidentiality can be provided even if we perform message encryption after the MAC generation.

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