Today I had a random idea on how to do this and tried to implement it. However, given the way the permutations are generated my "enhancement" ended up being just ignoring them if they are shorter than the min value. I dont see any significant improvement when working with small secrets, and I am currently unable to test with something longer.

@lmammino if you want, create a new branch for this issue and I will make a PR to it so you can have a look.

This feature does not exist at the moment, but I agree it would make a lot of sense. Happy to receive any PRs for it :)

I have it "ready" but as I am not sure if it really brings any performance improvement, I dont want to make a PR to the main branch. Is it possible that you set-up another branch so I make the PR there and you can have a look?

You can open a PR against the main branch anyway, then we can review it and decide whether to merge it or not (or keep it in another branch by retargeting the PR)...