Battlefield 4 server files?

Hi, I would like to know if there is any legal way to download the Battlefield 4 server files so that I can host them on my own machine. I will probably be told to go to a website that rents servers, but it is extremely expensive and I have my own server machine at home. I would like help to find out if it is possible to host my own dedicated server without the need to rent, and I would probably need a server key. How can I proceed with this?

thanks!