The section about secio is obsolete

[tomaka]

https://github.com/w3f/research/blob/master/docs/polkadot/keys/4-secio.md

The document mentions scepticism about secio, and we've since then removed secio from the Substrate and Polkadot code bases.
Polkadot/Kusama right now are using the official libp2p noise.

The plan to try to use QUIC in the long term is still relevant, though.

@burdges I've been told to ping you!

[burdges]

At this point transport key are maybe more @infinity0 now than me, but I can make some changes.

[infinity0]

Didn't realise that section existed but sure, I can take responsibility for fixing this. A large section of the docs are slightly out-of-date for sure and could do with a revamp.

[burdges]

It's extremely stale now, so I just removed it in 9ffffa0

I've never figured out whether certifying transport layer keys matters much. I'm still pushing for it as a defense in depth, so presumably anything that goes here should discuss certifying transport layer keys, ala paritytech/substrate#6251 (comment)

We should prioritize networking improvements that impact scalability however, so imho this could sit empty for a while. I'll mention it in https://github.com/w3f/research-security-issues/issues/26