Post
Topic
Board Development & Technical Discussion
Merits 6 from 2 users
Re: Can Quantum Computer's destroy Blockchain and Bitcoins[SHA-256 specifically]
by
larry_vw_1955
on 22/03/2022, 04:44:11 UTC
⭐ Merited by Welsh (4) ,vapourminer (2)
I think this is somebody who wants to profit from the fear of some Bitcoiners about "quantum computers hacking the blockchain!!" luring people into his shitcoin.
I don't see the point in any "quantum resistant" coin at the moment when we are still decades away from quantum computers being a threat to elliptic curve cryptography. Whatever quantum resistant algorithm they implement today will either be completely outdated by the time it is relevant (so maybe things such as much larger signatures and transactions than necessary, far less functionality allowing for different script/address types, much more resource heavy or slower to computer/verify, etc.), or might itself be broken and completely insecure.

It would be like a video game developer building a game today which won't be released until 2045 for the PlayStation 9. They have no idea what the technology will be or what its capabilities will be 20 years in the future, and whatever they come up with today will be incredibly outdated and might not even work by the time it becomes relevant.



Well, it's not just that. Another problem is these Post Quantum algorithms aren't really vetted in the sense like AES encryption is or say Elliptic Curve is. They dont have decades of trying to crack them so they might even be vulnerable to a normal computer to say nothing of a Quantum Computer. Bitcoin might be better off sticking to what it has than going with a shiny new object that ends up being cracked by a pentium 4 laptop running for a weekend or two.