Comment by mswphd
1 day ago
It's worth noting that the above assumes that grover's is optimal for symmetric crypto. There are not that many quantum attacks against symmetric crypto that are better than grover's, so in some sense this is justified. But there are some attacks for particular constructions
https://arxiv.org/pdf/2110.02836
So there is a risk that there are even more improved attacks that people aren't looking for due to the conventional wisdom that grover's is the best you can do for symmetric crypto. Hopefully this risk doesn't end up materializing.
I agree.. Consider Math symbols and physical constants themselves are signs in a humans (or machines) interpretive system. They aren’t the actual thing, and treating them as precise blinds us to alternative interpretations. Conventional wisdom about Grover’s algorithm might be blinding cryptographers. I highly recommend semiotics as a lens peaking through this veil.