Authentication plugin for adobe media server.

i am  using Adobe media server version 5 extended. i am trying to implement authentication(user name/pwd)  for RTMP URL. I have already checked forums  at forums.adobe.com but i couldn't get the propoer plugin/solution for this. Please provide proper auth plugin for AMS version of  adobe media server.I referred following URL that is not working properly.

Referred URL:  https://forums.adobe.com/message/8171756#8171756

                       https://forums.adobe.com/message/8171756#8171756

                        https://forums.adobe.com/message/4865265

                        https://forums.adobe.com/thread/247388

                        https://forums.adobe.com/message/4845702#4845702