3 ms·
How is the key image impossible to describe? There are only 4 possible colors per cell. You just describe it like 0,1,2,3,2,0, etc Just as if you were reading
by utnick 13y ago
How is the key image impossible to describe?
There are only 4 possible colors per cell.
You just describe it like 0,1,2,3,2,0, etc
Just as if you were reading off the real key.
- nwh 13y agoFrom just asking around, most people described the key image to me in terms of the darkest portions and ignored the parts that were lighter. It's easier for the example image to say that there's a dark L and lighter X shape in the center and then assume that the rest is the same. At least, that's how people did when I presented it to them as a challenge.
- velis_vel 13y ago> There's also not that many possible images anyway, there's 8 rows with 8 columns, and 4 possible colours for each pixel. Even not assuming any fuzzy matching (human comparison) it's still very possible to generate keys with colliding image hashes. Uh, 4^(8*8)=2^128 is a pretty large number.
- nwh 13y agoSo it is, I've removed that. I need to sleep more.