RTMP Authentication with Wowza Streaming Engine

Question

I am trying to stream audio and video using RTMP using the James Videocore code (Thanks a lot to him) https://github.com/jgh-/VideoCore/ in my application. The code works fine, but there is no authentication module. I tried to implement the authentication module in the above code, but there is not enough documentation that I can relate.

Can someone tell me if they have implemented authentication in RTMP, or any pointer to the relevant documentation will be really helpful.