Discussion
Is there some easy/reliable UDP/datagram security layer I can use from Rust? Something simple, shared keys or pub/privkey auth (both directions).
If there's nothing better I'm tempted to take wireguard-rs and just remove the routing/tun part...
Edit: Solved, https://noiseprotocol.org it is!
@OliverUv @lina noise is good, yeah. (this also assumes that you're fine with the usual UDP properties of packet reordering/dropping/maybe duplication idk if noise will catch that, probably not?)
just stealing wireguard's code to handle reconnection/handshake and such isn't a bad strategy imo though, wireguard is largely a thin layer ontop of noise.
@lina @OliverUv also worth looking at how wireguard uses it ( https://www.wireguard.com/protocol/ )
if "simple" wasn't quite of a requirement i'd personally just use QUIC, especially if that simplifies the stack elsewhere, but that's not "encrypted IP" the way wireguard is. and that needs significantly more code than noise/wireguard.
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@lina I'd recommend using one of the noiseprotocol libs. See https://noiseprotocol.org/ for details, and https://noiseexplorer.com/ to choose whichever handshake pattern suits your use case best.
It's transport agnostic, so you can use it wherever you want.
Noise Explorer
Noise Protocol Framework