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Mix Row functions operate on the 8 × 8 matrix (A) to form the new matrix. The operation can be considered to be B = AC. The matrix C is formed by

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Mix Row functions operate on the 8 × 8 matrix (A) to form the new matrix. The operation can be considered to be B = AC. The matrix C is formed by

(a) each successive even row having left shifts

(b) each successive row having a left shifts

(c) each successive odd row having right shifts

(d) each successive row having a right shifts

I got this question in an international level competition.

This key question is from Whirlpool Algorithm topic in chapter Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

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Correct answer is (d) each successive row having a right shifts

The explanation is: The matrix C is formed by each successive row having right shifts.

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