83
Quantum computers need vastly fewer resources than thought to break vital encryption
(arstechnica.com)
this post was submitted on 01 Apr 2026
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Technology
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Doesn’t quantum proof encryption exist already? I thought I learned that in college more than a decade ago… The only reason its not viable yet is because hardware was not powerful enough to run it without being slow.
I could be misremembering though its been a long time
It does and many security or privacy oriented services have 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.
There is quantum cryptography also. If any middle man listens into the communication, the information is scrabbled. Cool stuff