@beardyunixer You are very welcome to solve the logically unsolvable issue of federated trust between random local user and random remote server.

e2e encryption is the only solution, but then you have all kinds of barely solvable issues with key distribution, fingerprint verification, data recovery etc. etc. My favourite issue with distributed e2e communication is that it needs to have perfect forward secrecy combined with new clients having access to backlog. I bet you can fix that with Ruby.