5.1 In the discussion of MixColumns and InvMixColumns, it was stated that b(x) = a-1(x)mod (x4 + 1) - Cryptography and Network Security - Stallings

5.1 In the discussion of MixColumns and InvMixColumns, it was stated that b(x) = a-1(x)mod (x4 + 1) where a(x) = {03}x3 + {01}x2 + {01}x + {02} and b(x) = {0B}x3 + {0D}x2 + {09}x + {0E}. Show that this is true.


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