[Coco] Color Computer RSA

[Fabian Rodriguez (CoCoByte)]

Le 2022-07-24 à 11 h 30, Don Barber via Coco a écrit :
> Hi folks, wanted to share my latest project that I've just published.
>
> I've written an RSA implementation for the Color Computer. It will 
> handle up to 2048-bit keys. Its written in assembly, and I've made all 
> the code I developed open source and placed it on github here:
>
> https://github.com/barberd/cocorsa

Wow, thanks for publishing this under the GPLv3 Free software license, I 
am also particularly impressed to see a clear description and detailed 
information, even going as fas as linking to Wikipedia AND CoCopedia :)\


> [...]
> I also implemented some filesytem/file-handling routines, and a screen 
> output routine that will wrap text nicely. Hopefully by making all 
> these open source, I can also help future CoCo programmers.

This is very interesting. At what point did you decide is was worth it 
to write your own and how long did this take ?


> I taught myself basic on my coco3 when I was 9 and always told myself 
> that I'd learn to program it with 'machine language' one day. I also 
> dusted off a lot of those mathematical algorithm skills from my 
> computer science undergrad days to create this. So while an RSA 
> implementation for the CoCo may not be that useful on a day-to-day 
> basis, I'm still quite proud of this effort. Hopefully others can 
> appreciate.
> [...]

I am thinking this could be useful to access online resources that 
requires encryption... Or not ? In any case reading this makes me think 
I too could tackle learning 6809 assembly language - great inspiration 
:) Thank you!

Cheers,

F.

-- 
Fabián Rodríguez - Montreal, Canada
http://coco.magicfab.ca
~
CoCoByte, el grupo de usuarios del Tandy Color Computer
https://cocobyte.co - Cali, Colombia