Anyone familiar with protecting e-book/PDF files?

[JDMnsxR]

i have a document that i want to distribute and publish. the document is a multi-page PDF file. is there anyway to burn to CD, and distribute normally, but allow users to install only ONCE onto their computer source, and then keep them from being able to re-distribute, re-install on multiple sources, etc?

i know some e-book distribution is done with some type of code/encryption/key/etc?

thanks in advance!!!!