Quantum computers are a long ways away from becoming general purpose computers. As of right now, quantum computers are highly limited to only being able to perform specific kinds of calculations and tasks. There is no threat stemming from quantum computers at the moment and there won't be for quite some time now.
I would worry if quantum computers became commercially available like smartphones, then there would probably be room for panic to ensue. I believe that people have been watching way too many science fiction movies.
I would worry if quantum computers became commercially available like smartphones, then there would probably be room for panic to ensue. I believe that people have been watching way too many science fiction movies.
Nobody expects them to. Quantum computing is additional to general computing, what people probably mean is that your general computer will be also quantum capable, i think something like a quantum co-processor will appear at some point. At this point, you WILL see quantum crypto algorithms implemented, which solves the problem entirely.
So its the opposite. Once "everyone" has it, it is solved. The problem is the transition, when only a few can own one. Your worry is from today, until "quantum computers became commercially available like smartphones" when you can easily use quantum crypto algorithms.
This is also the reason the mitigations should not be delayed too long, but always keep in mind of that the actual solution is.