Submitted 15 hours ago by BrikoX@lemmy.zip to technology@lemmy.zip
No, the sky isn’t falling, but Q Day is coming, and it won’t be as expensive as thought.
Doesn’t quantum proof encryption exist already? I thought I learned that in college more than a decade ago… The only reason its not technically usable is because hardware is not strong enough to run it yet without being slow.
I could be misremembering though its been a long time
It does and many security or privacy oriented services are already implemented post quantum encryption, but majority of the internet still relies on AES-256 or similar if not worse.
AES-256 is fine actually. The best known quantum attack reduces key strength from 256 bits to 254.4 bits. The problem is that in order to use AES (which is a symmetric encryption scheme) you need to exchange keys using an asymmetric system like RSA, which is known to be weak to quantum attacks.
more hype and no practical results
Mangoholic@lemmy.ml 6 hours ago
Why the focus on breaking encryption. Can these computers not be used for better things
hoch@lemmy.world 6 hours ago
In a perfect world, yes. But instead, we have countries like Russia (and probably now the US) which would love to use this technology for nefarious purposes.
supplier@hexbear.net 6 hours ago
They do have real uses, but this is probably the one that woulf cause the most immediate harm