4 ms·
The hard part is that anything designed to be breakable in a week is only ~150x away in strength from being broken in an hour. That means you need to be incredi
by adgjlsfhk1 1y ago
The hard part is that anything designed to be breakable in a week is only ~150x away in strength from being broken in an hour. That means you need to be incredibly confident about how strong your algorithm is. It's much easier to eat a little bit of cost such that you think it's invulnerable for thousands of years because that way you don't need to worry about a factor of 2 here and there.
- staplefire 1y agoRight. Strength in a shadow contest like cryptography can be, best case, estimated to sixteen-bit orders of magnitude (+-65000x). Just because you can't break it doesn't mean somebody else secretly knows a game changing way to break it. So you keep padding with huge exponential hedges such that if they scan shave a dozen bits off the strength of the scheme, it's still secure under finite resources. Playing close to the margin is super dangerous.