Is The Following Matrix The Inverse Matrix Of The Matrix Used In The Mix Columns Step? X3 + 1 X X X3 + 1 A) Yes B) No C) Can’t Say D) Insufficient Information

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⟩ Is the following matrix the inverse matrix of the matrix used in the mix columns step? x3 + 1 x x x3 + 1 a) Yes b) No c) Can’t say d) Insufficient Information

a) Yes

Explanation: On multiplying this matrix with the mix columns matrix we get the identity matrix, this proves that it is an inverse matrix.

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Question and Answer:

Home Cryptography Teacher

⟩ Is the following matrix the inverse matrix of the matrix used in the mix columns step? x3 + 1 x x x3 + 1 a) Yes b) No c) Can’t say d) Insufficient Information

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Home Cryptography Teacher

⟩ Is the following matrix the inverse matrix of the matrix used in the mix columns step? x3 + 1 x x x3 + 1 a) Yes b) No c) Can’t say d) Insufficient Information

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