When they say "social graph for Signal", afaik they don't mean 'on Signal servers' but 'social graph on your phone'. It's a personal social graph that exists on the end-user device.
I don't remember how the hash issue is dealt with, however.
> Signal is not peer-to-peer. It is a centralized, client-server architecture.
It's not a P2P mesh, but Signal's servers are involved only for certain functions. I think communication tx is P2P - to send a message via server (used to hide sender IP address from onlookers and the recipient), you need to enable relaying. Possibly finding the recipient still relies on the server - if I want to send a P2P message to Abel, to what IP address do I send it?
I don't remember how the hash issue is dealt with, however.
> Signal is not peer-to-peer. It is a centralized, client-server architecture.
It's not a P2P mesh, but Signal's servers are involved only for certain functions. I think communication tx is P2P - to send a message via server (used to hide sender IP address from onlookers and the recipient), you need to enable relaying. Possibly finding the recipient still relies on the server - if I want to send a P2P message to Abel, to what IP address do I send it?