[lolinder]

Java's does, and that's the implementation the article discusses.

[lll-o-lll]

But this is the point though, UUID is the wrong tool for the job. You want a cryptographically random blob of entropy and you reach for a UUID because it happens to contain some of that in a specific implementation.

UUIDs are for uniqueness and involve implicit trust. Cryptographic libraries are what you need to generate entropy blobs without weakening security/confusing the next developer etc.