I just finished reading the article again (with google translate) and I followed the link to https://crates.io/search?q=maidsafe.
According to the description of the maidsafe_vault crate:
This is Pre alpha, and not useful, no code worth looking at.
@dirvine! Not useful? No code worth looking at? I wouldn’t quite say that about maidsafe_vaults, I had quite a fun time playing with it! Although maybe it isn’t actually that useful yet… the code still is pretty impressive for what it accomplishes!