DRMAuthenticateEvent  - AS3

package
{
    import flash.display.Sprite;
    import flash.events.AsyncErrorEvent;
    import flash.events.NetStatusEvent;
    import flash.events.DRMAuthenticateEvent;
    import flash.media.Video;
    import flash.net.NetConnection;
    import flash.net.NetStream;

    public class DRMAuthenticateEventExample extends Sprite
    {
        var videoURL:String = "Video.flv";
        var videoConnection:NetConnection;
        var videoStream:NetStream;
        var video:Video = new Video();            

        public function DRMAuthenticateEventExample()
        {
            videoConnection = new NetConnection();
            videoConnection.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
            videoConnection.connect(null);
        }

        private function connectStream():void {
            videoStream = new NetStream(videoConnection);
            videoStream.addEventListener(NetStatusEvent.NET_STATUS, netStatusHandler);
            videoStream.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);
            videoStream.addEventListener(DRMAuthenticateEvent.DRM_AUTHENTICATE, drmAuthenticateEventHandler);
            video.attachNetStream(videoStream);
            videoStream.play(videoURL);
            addChild(video);
        }

        private function netStatusHandler(event:NetStatusEvent):void {
            switch (event.info.code) {
                case "NetConnection.Connect.Success":
                    connectStream();
                    break;
                case "NetStream.Play.StreamNotFound":
                    trace("Unable to locate video: " + videoURL);
                    break;
            }
        }

        private function asyncErrorHandler(event:AsyncErrorEvent):void {
            // ignore AsyncErrorEvent events.
        }

         private function drmAuthenticateEventHandler(event:DRMAuthenticateEvent):void {
            videoStream.setDRMAuthenticationCredentials("User", "password", "drm");
        }
     }
}