“UCUMBERLAND IS A+”

Fill the message in the 4X4 MATRIX

and NOW Multiply by the AES MIX ROW – IN GALOIS FIELD (Below)

2 3 1 1

1 2 3 1

1 1 2 3

3 1 1 2

Remember the 2 is actually is actually 0010

3 is 0011

1 is 0001

YOU ARE PERFORMING MATRIX MULTIPLICATION (DOT PRODUCT) AND REDUCE IF NEEDED. THE RESULT HAS TO FIT IN ONE BYTE

THIS IS DIFFICULT AND TAKES TIME UNLESS YOU KNOW HOW TO USE THE LOOK UP TABLE IN WIKEPEDIA (MUL2 and MUL3)

 

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aes matrix multiplication was first posted on August 11, 2020 at 7:32 am.
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