RFC: no_std

[aep]

#62

the only thing that actually requires std is Cursor in src/resolvers/default.rs CipherChaChaPoly

and getrandom, which is an upstream issue in rand

both don't seem a big problem to me, since embedded users need a different resolver anyway now that hacl is gone

[mcginty]

Great! Makes sense to do this change now. I'll check it out more once it passes CI.

I'm down for re-adding HACL*, I removed it because we had an issue right before the 0.6 release and I wanted to be safe and re-integrate it after further inspection.

[dzmitry-huba]

Hello, Jake and Arvid

I was wondering if you have plans to integrate this change and enable no_std support. I would love to use your library in our project that runs inside of the TEEs.

Please let me know what you think.

Cheers!