Tutorial A8 32bit AES
Revision as of 04:05, 18 July 2017 by Coflynn (Talk | contribs) (Created page with "Most of our previous tutorials were running on 8-bit modes of operation. We can target typical implementation on ARM devices which actually looks a little different. This tut...")
Most of our previous tutorials were running on 8-bit modes of operation. We can target typical implementation on ARM devices which actually looks a little different.
This tutorial is ONLY possible if you have an ARM target. For example the UFO Board with the STM32F3 target (or similar).
Background
A 32-bit machine can operate on 32-bit words, so it seems wasteful to use the same 8-bit operations. Indeed we can speed up the AES operation considerably by generating several tables (called T-Tables), as was described in the book The Design of Rijndael which was published by the authors of AES.