To be completly honest this section was rather easy. This is because I have already implemented AES once this semester. Most likely the hardest part is the construction of the S-box. It is definately more involved and takes a little thought to get.
The most interesting part is the polynomial multiplication in the field of G(2^8). I love how everything can be worked out as simple machine instructions. It makes it really easy to implement in hardware and software.
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