Rijndael Mix Columns

Rijndael Mix Columns

The MixColumns operation performed by the Rijndael cipher, along with the shift-rows step, is the primary source of diffusion in Rijndael. Each column is treated as a polynomial over GF(28) and is then multiplied modulo with a fixed polynomial ; the inverse of this polynomial is .

Read more about Rijndael Mix Columns:  MixColumns, Implementation Example, InverseMixColumns, Test Vectors For MixColumns; Not For InvMixColumns, Galois Multiplication Lookup Tables

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