If you have portability issues, I happen to have written a crypto library¹ in portable C99/C++. It has been tested on a stupidly wide range of platforms, and is

If you have portability issues, I happen to have written a crypto library¹ in portable C99/C++. It has been tested on a stupidly wide range of platforms, and is simple enough that you could bind to the higher-level constructions yourself. Platform specific issues are pretty much impossible. Oh, and it's just 2 files (one header, one source file), pretty easy to just paste them into your own project. As for the maintenance, it hardly needs any. Should I get hit by a bus tomorrow, you'd still have something useable today. If you want client server security, I'm currently working on Noise like protocols, and should add that during the summer. After that, my library should be mostly frozen. Now there is this thing where you might not trust yourself enough to decide whether you should trust me… 1: https://monocypher.org/ https://monocypher.org/