

In the very old times, you’d have to be born rich already to do maths. You then don’t concern yourself with making a living, because your slaves do it for you.
In the old times, you’d live the same as artists: find a rich dude (exceptionally rarely: dudess) to pay your bills, and in exchange name shit you discover/invent after them.
Last few decades you also have a couple new options. You can work (teach) at a university for pennies, and typically have a second job/side hustle so that you can actually survive. And/or you can write books/make a YT channel, and if you’re lucky and get popular enough, that can be your living then, but it’s probably not going to be anything too advanced. And/or, if your area of expertise has some vaguely practical application (e.g. cryptography or statistics), you can actually find a job that pays you to do theoretical research in that area in hopes of finding practical application, but you’d have to be pretty lucky to get that.




Telegram can serve you your old “Cloud” messages, in a decrypted form, on a new device, without any communication with the old device.
This means that they possess the keys to decrypt the messages, since they can send them to you in a decrypted form.
Those messages can’t even be encrypted with your cloud password (which would be a pretty weak encryption anyways), because you can reset the cloud password via your recovery email, and still retain access to your messages.
Contrast this with encrypted chats on Matrix, where you have to go through the device verification procedure, which prompts the old device to send decryption keys to the new device (it’s actually more complicated but this gets the point across). If you lose access to all your devices (and your recovery key), your encrypted messages are gone, the server admin can’t restore them because they simply don’t have the key.
This is a distinction without a difference.
My claim is:
Whether this is implemented via MTProto encryption or disk encryption or whatever, it doesn’t matter, they can read your messages if they want to.
Telegram is actually pretty transparent that Cloud chats are not e2e encrypted in their FAQ. They also go on to babble about “MTProto client-server encryption” but if you spend 2 minutes looking at it, you can see it’s just 256-bit AES with a shared key generated via Diffie-Hellman, not too dissimilar from plain HTTPS. In that sense it’s about as secure as e-mail over encrypted IMAP/SMTP, or IRC over TLS, or DMs here on lemmy.
They also claim that their at-rest encryption keys are separate from the data they encrypt, and claim that somehow this “requires court orders from multiple jurisdictions” to force them to give over your data, which is just ridiculous from a legal standpoint and won’t stand up in court. And actually, it’s way more likely that they will just cave in and give up your message history without a lawsuit at all, just look at what happened to Durov in France.