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The S-box implements linear mapping thus providing diffusion.

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The S-box implements linear mapping thus providing diffusion.

(a) True

(b) False

I got this question in exam.

Origin of the question is Whirlpool Algorithm topic in portion Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

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Right answer is (b) False

To explain: Non-linear mapping provides diffusion. The s-box provides Non-linear mapping.

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