There is quantum cryptography also. If any middle man listens into the communication, the information is scrabbled. Cool stuff
Comment on Quantum computers need vastly fewer resources than thought to break vital encryption
rando@sh.itjust.works 3 weeks ago
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
obbeel@lemmy.eco.br 3 weeks ago
BrikoX@lemmy.zip 3 weeks ago
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.
Rossphorus@lemmy.world 3 weeks ago
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.