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> Classical asymmetric cryptography would be in danger, but there are alternative systems for which no quantum based attacks are known. What about asymmetric c
by runeks 9y ago
> Classical asymmetric cryptography would be in danger, but there are alternative systems for which no quantum based attacks are known.
What about asymmetric crypto schemes executed on a quantum computer? All the discussions I've heard so far assume attackers have a quantum computer and everyone else have classical computers. To me, this seems like an unreasonable assumption. Won't there be a way to use a quantum computer to do asymmetric encryption in a way that makes it hard for it to reverse it?
- AnimalMuppet 9y agoThere will be a long period of time (probably at least a decade, maybe even several) where large government agencies have quantum computers, maybe large businesses, but most people (and many small businesses) don't. (Remember that "computers" now includes your phone. I'm not sure how soon quantum chips come to phones...)
- p1esk 9y agoWhat about D-Wave computers?
- AnimalMuppet 9y agoIf I understand correctly, D-Wave is not a general purpose quantum computer. It only works on certain specialized problems. And even there, there's still question of whether it actually works faster than a non-quantum computer.