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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 [http://www.springer.com/gp/book/9783540425809 The Design of Rijndael] which was published by the authors of AES.
== Building Firmware ==
You will have to build with the <code>PLATFORM</code> set to one of the ARM targets (such as <code>CW308_STM32F0</code> for the STM32F0 victim, or <code>CW308_STM32F3</code> for the STM32F3 victim). If you haven't setup the ARM build environment see the page [[CW308T-STM32F#Example_Projects]]. Assuming your build environment is OK, you can build it as follows:
cd chipwhisperer\hardware\victims\firmware\simpleserial-aes
make PLATFORM=CW308_STM32F3 CRYPTO_TARGET=MBEDTLS
If this works you should get something like the following:
Creating Symbol Table: simpleserial-aes-CW308_STM32F3.sym
arm-none-eabi-nm -n simpleserial-aes-CW308_STM32F3.elf > simpleserial-aes-CW308_
STM32F3.sym
Size after:
text data bss dec hex filename
8440 1076 10320 19836 4d7c simpleserial-aes-CW308_STM32F3.elf
+--------------------------------------------------------
+ Built for platform CW308T: STM32F3 Target
+--------------------------------------------------------
== Hardware Setup ==
== Capturing Traces ==
== Running Attack ==