this post was submitted on 21 Sep 2023
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how do we even know something is quantum secure, like the tech isnt out yet is it?
Because we already know how quantum encryption works.
It's like how we proved the Halting Problem was undecideable long before the first computer was ever built.
People have been able to model quantum computers mathematically since the time normal computers were the size of buildings.
This might be helpful: https://m.youtube.com/watch?v=-UrdExQW0cs
I'm guessing they can say the methods of encryption are "1 way" ie unreversable, and therefore quantum resistant (the way that quantum solves equations).
Not quite, no encryption is truly irreversible (that’s the point). We’ve built quantum computers and we know how they work. We found weaknesses in the prime number generation that powers most encryption, so we’ve built around that.