It takes about a billion qbits to break 2048bit encryption, so a while. I saw something about reducing it to about 20 million qbits recently, but it’s still a while off.
Hash functions are not known to be quantum vulnerable (i.e., there’s no known quantum algorithm that provides an exponential speedup, best you can do is to use Grover’s algorithm to slightly speed up the brute force search). So maybe never.
So, web encryption broken when? Now?
It takes about a billion qbits to break 2048bit encryption, so a while. I saw something about reducing it to about 20 million qbits recently, but it’s still a while off.
More importantly, how long until I can guarantee a 51% chance of solving every bitcoin block?
Hash functions are not known to be quantum vulnerable (i.e., there’s no known quantum algorithm that provides an exponential speedup, best you can do is to use Grover’s algorithm to slightly speed up the brute force search). So maybe never.