How it works: I don’t know about this service in particular, but usually the shared contains the encryption key so like this: example.com/files/file_id/encryption_key or something similar

But if the key is in the URL, that's provided by the server, where's the utility of the encryption since the server knows it and so does everyone that has the URL?

[–] flux@lemmy.ml 1 points 6 hours ago (1 children)

So the trick is to use the #fragment part of the URL, that is not sent to the server.

Of course the JS one downloads from the server could easily upload it to it, so you still need to trust the JS.

[–] peregus@lemmy.world 1 points 6 hours ago

But the JS code could be checked on the webpage, correct? If so, the page could be trysted (if vetted).