> All of today's practical public key crypto could be broken by a sufficiently powerful quantum computer - if one existed which today it does not That we know

> All of today's practical public key crypto could be broken by a sufficiently powerful quantum computer - if one existed which today it does not That we know of. There are commercially available quantum computers [0] and there are roadmaps for commercial technology ramp up significantly [1]. Remember, that's a roadmap to projected commercial viability. It's hard to say what state actors are capable of right now. [0]: https://azure.microsoft.com/en-us/services/quantum/ https://azure.microsoft.com/en-us/services/quantum/ [1]: https://venturebeat.com/2020/12/09/ionq-roadmap-quantum-machine-learning-2023-broad-quantum-advantage-2025/ https://venturebeat.com/2020/12/09/ionq-roadmap-quantum-mach...