@dunderhead@social.vivaldi.net
Post #4381127
2026-08-04 18:45 UTC
@david_chisnall@infosec.exchange A (very?) basic question, quantum computing seems to be (from the news) something far away from reality but there seems to be lots of very serious work going on post quantum cryptography. Why is there a huge disconnect on this?
Replies (1)
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@david_chisnall@infosec.exchange 2026-08-04 18:54
@dunderhead@social.vivaldi.net I am not qualified to judge the physics, but there are two things that have been moving the time when a quantum computer could break classical asymmetric crypto closer: Improvements to the quantum computers.Improvements to the algorithms. A lot more of the threshold movement has been from the latter. The size of quantum computer needed to break crypto has shrunk by orders of magnitude in the last decade or so. The complexity of feasible quantum computers has increased slowly in that time.