Tutorial A8 32bit AES

From ChipWhisperer Wiki
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...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

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.