Type of Channel in DKG

[matthiasgeihs]

drand-docs/docs/concepts/02-Security_Model.md

Lines 59 to 61 in 2ddf601

	**Authenticated Channel**: Every communication between nodes must be
	authenticated. drand achieves this by signing every outgoing DKG packets with
	a BLS signature on the longterm public key of the sender node.

The documentation states that DKG requires authenticated channels.

Doesn't DKG also require private channels?

[AnomalRoil]

Yes. We use ECIES using the BLS long-term keys of the nodes to establish the private channels we need between nodes, and transmit these using an authenticated broadcast mechanism with Schnorr signatures.

We should fix the docs I guess.