I’m not talking about whether Vanitygen can crack an any existing wallet or not. I know it is practically impossible, considering the computational resources required.
But what if, it’s to crack vanity addresses generated by itself, Vanitygen?
If Vanitygen is deterministic and does not take any input (such as a seed) other than the desired pattern, in other words, does not walk along random steps, given the pattern input is the same, it would always require the same amount of computational resources to generate the identical first match, which is mostly affordable.
Do Vanitygen have some kind of countermeasures for this problem? Is it safe to use Vanitygen-generated wallets, free of the threat of Vanitygen-regen?