SPC58EC CRYPTO SW Crypto Libs for ECC signature, sign verify

[jschoi0126]

 

I am currently developing with SPC5STUDIO and want to verify a signed message using ECDSA.

To do this, I am studying the example in ecc.h.

When I ran the example code:

retval = ECCinitEC(&ECparams, &mb);
retval = ECCinitPoint(&G, &ECparams, &mb);
retval = ECCsetPointGenerator(G, &ECparams);
retval = ECCinitPoint(&PubKey, &ECparams, &mb);
retval = ECCinitPrivKey(&privkey, &ECparams, &mb);
retval = ECCsetPrivKeyValue(privkey, ecc_160_privkey, sizeof(ecc_160_privkey));

 

These functions executed without any issues, and I confirmed that the keys and parameters were correctly set in each variable.

However, when I call the function retval = ECCscalarMul(G, privkey, PubKey, &ECparams, &mb);, the system stops working and crashes.

If you have any insights or comments on this issue, I would greatly appreciate it.

Thank you.

best regrds.

[Erwan YVIN]

Hello ,

i recommend to check the PC, R14, R13 with your debugger

Maybe it is a stack pointer overflow 

     Best regards

                 Erwan

[jschoi0126]

Thank you for your response. Are PC, R13, and R14 referring to core registers? If so, what are these registers specifically, and what should I be checking in each of them? If it turns out that stack pointer overflow is indeed the issue, how can I resolve the problem? Thank you.