An introduction to elliptic curve cryptography

this is a wonderful explanation

I'm currently implementing ECC for a personal project ;)

You might have a look at seccure ( http://point-at-infinity.org/seccure/ ) as well, if you haven't. It's packaged and ready to go in Debian.

thanks but not appropriate for my stuff

sorry that sounded weird upon reflection, basically different tech stack but thank you for the article and this other link!

An introduction to elliptic curve cryptography (embedded.com)