You could do signatures/MAC without encryption to guarantee that the message was not modified

Okay! Cool! Let’s just (nonsensically) develop a new protocol for this small group of nerds’ fetish for ‘retro tech’. A protocol that nobody will use.

You do realise that “is it technically possible?” Is like 1% of the question in computing, at most, yes? HTTP and HTTPS are what we’ve got.

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This whole post is about Gemini the protocol, a new protocol for a small group of nerds' fetish for retro tech (it's basically modern gopher).