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Consider why a very strong passkey is protective: It is expensive to crack it. Either you spend a ton of expensive computing power to crack it, or you arrange bribes or kidnapping. At some point, the cost is beyond "lol" budget and needs to be worth it for a lot of powerful people.
So basically it's protected by an extremely strong password. :)
I mean, you can't exactly just throw computing power at modern cryptography and expect to get results. I don't know the exact numbers off the top of my head, but I believe all the computing power on Earth right now would take on the order of at least thousands of years to brute force a good password hash (assuming a strong password), and that's assuming the attacker already has the salt. This makes it less of a budgetary constraint and much more of a practical one.
Correct. But also https://xkcd.com/538/ . Hence why I said "or bribes and kidnappings".
Quantum computers could feasibly do it. However, even Google's project willow at 105 qubits is not enough. Because if it were, we would have much bigger problems like, oh, I don't know, the encryption that protects your bank account and HTTPS connections.
Post-quantum encryption is a thing.
That's true. I just don't know of a lot of mainstream things that have deployed it quite yet. Like I do not think HTTPS is post quantum secure, or at least not that I'm aware of.
I was wondering about encryption (is this what you're talking about?) because these algorithms change so frequently I'd be surprised if they had anything back then considered 'secure' by now.
Well, sorta. I ruled it out because hardware of that era, limited by Voyager's power supply, could not do encrypted communication beyond wet paper bag levels. And like you said, anything more than 20 years old is not in use anymore because people have poked holes in it.
But encrypted communication is all based on same as a passkey in the end (a sequence of secret bytes), whether we are talking encryption based off public/private keys, symmetric keys, elliptic curve, passphrases etc, so it's comparable enough for the point I was aiming for. :)
I don't see why they would encrypt it at all. I assume everything is setup to keep power usage to a minimum. I would assume some sort of compacting might be done. Its that type of thing which I would assume would kinda secure it. They don't use bog standard stuff and if they can use some unique protocol that saves just a bit of energy they are likely to do it. Keep in mind that since like the 90's a lot of tech stuff has been muscled through rather than maximizing its efficiency. We tend to do efficiency has afterthoughts that effect large swatches like with using video hardware and such.