LiveCycle Rights Management. And a server to run it on 24/7. Price by negotiation but expect at least five figures (US$).
What country are you actually in at the moment? And in which country did you register?
I am in the UK and registered in the UK
Should be available to license in the UK, but it's a different contact because this is an enterprise product. Your server admin may need to do the tech discussions about it. Not something we know much about here, it isn't part of Acrobat. Document control and security | Adobe Experience Manager seems to be the place to start. (Note: this is mostly used by large publishers, and a reason to use a publisher rather than self-publish).