Hi, I’m trying to capture some RSA traces, but with a K-ary exponentiation method. I took the tutorial “PA_SPA_2-RSA_on_XMEGA_8bit” as starting point and got to capture some traces, however I got an error when building:
As can be seen in the figures, there is an error when compiling, but the the target is then programmed succesfully. My first questions are: are the obtained traces the right ones? How do I solve the errors shown in the first figure with the undeclared commands “simpleserial_addcmd(‘1’, 0, sig_chunk_1);” and “simpleserial_addcmd(‘2’, 0, sig_chunk_2);”?
As a next step, once the previous aspect is solved, I will need to modify the exponentiation method of the RSA. From what I undertood, I need to modify the C file “[/hardware/victims/firmware/crypto/avrcryptolib/bigint/bigint.c]”, which is called by " [hardware/victims/firmware/crypto/avrcryptolib/rsa/rsa_basic.c]"
Could anyone confirm me if I am right?
Any help is wellcome, thanks!