Comment by RetroTechie
18 days ago
> hashes by definition are not reversible.
Sure they are. You could generate every possible input, compute hash & compare with a given one.
Ok it might take infinite amount of compute (time/energy). But that's just a technicality, right?
Sure they are. You could generate every possible input
Depends entirely on what you mean by reversible. For every hash value, there are an infinite number of inputs that give that value. So while it is certainly possible to find some input that hashes to a given value, you cannot know which input I originally hashed to get that that value.