REST_Controller - Generating the API-KEYs?

Hi All,

I've installed the REST library by chriskacerguis and turned on API-KEY authentication. I'm building an API to be consumed by web and mobile apps (my own).

Can anyone describe the actual steps needed to generate and save those API-KEYs into the 'keys' database table? Should I have a separate API controller (not REST_Controller) that deals with signup and creates/inserts that?

Or should I use an OAuth2 library to authenticate the clients and return/save the keys?

Just need some clarification on exactly how the flow works. Thanks.