wt., 1 cze 2021 o 08:37 BERTRAND Joël <joel.bertr...@systella.fr> napisał(a):
> RSA doesn't run as expected. With expopent=3 and length=512, program > doesn't crash but after four hours (@ 16 MHz on simavr), gdb shows that > program stays in RSA subroutines and doesn't return to main routine. > Something is probably broken somewhere. > try to replace in the example above: /* add your fix here */ with: bigint_adjust(&data); bigint_adjust(&public->exponent); bigint_adjust(&public->modulus); The computation takes 4 seconds on my laptop. Note that the "I" value changes (from I=0.. to): BIGINT: 0x40f5.. L=14.. I=6.. I've tried to find a "HOWTO use avr-crypto-lib" documentation, but I couldn't find any, which is a little worrying (maybe I didn't try hard enough). If there is no documentation reading the source code and test code is an option. > > I have found a uECC library but I don't understand how use this library > to encrypt data (I think I have understand how I can sign data). > > Best regards, > > JB >
