I would like to add (not remove) DRM to an EPUB file? How would I do it? Preferably on OS X.
I tried Gooogling but (all) of them are about removing DRM from EPUB.
Super User is a question and answer site for computer enthusiasts and power users. It only takes a minute to sign up.Sign up to join this community
You'll need proprietary software made for adding DRM to ePUB's.
Check out Adobe's Content Server product line, as it implements a version of Adobe's DRM "ADEPT" (Adobe Digital Experience Protection Technology).
Adobe® Content Server 4 software is a robust server solution that digitally protects PDF and reflowable EPUB eBooks for Adobe Digital Editions software and supported mobile devices, including the E Ink, smartphones, and tablet devices.
More info from Wikipedia.