Re: AES S-box question

"amunk" <MonksPantry@xxxxxxxxx> wrote in message news:907ed447-da41-4eeb-a3b1-3e4f9bd21f68@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have been reading a lot about this subject and I would like if
someone can confirm my uderstanding: I am concluding that the S-box in
the Rijndael specification should be used as is and that there is no
advantage for one to generate their own version.


Correct. There is no known advantage to changing the S-Box. The reason is that all the selection criteria of the Rijndael S-Box is given, and it is easily verified to meet the requirements set forth. At the same time, assuming your new S-Box meets the requirements, there is no problem with using your own S-Boxes, just don't call it AES.
Joe

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