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Author Topic: E-Cinema Server-Security Implementation Venkat SIddareddy Film Handler Posts: 8 From: Hyderabad, Andhrapradesh, India Registered: Oct 2010 posted 05-04-2011 10:30 AM                        Hi, I am an independent Digital Cinema Developer from India. Recently I have completed the development of a very cost-effective E-Cinema server. The sound and image are extremely good. They are far better than the existing servers here. But I am stuck at the HDCP or similar implementation. Can some one suggest a decent way for protecting my video signal? Right now my server can check for a valid projector and will start playing the encrypted video only if the projector is valid. However I can use a DVI/HDMI splitter and connect a second device after the video starts playing in the first device. What are the possible ways of preventing this? If there are any programmers out there who are willing to help me implement these security features I would be glad to collaborate with them. Thanks Venkat  |  IP: Logged Terrence Meiczinger Film Handler Posts: 45 From: Orono, Me, USA Registered: Dec 2008 posted 05-04-2011 12:07 PM                        If you are using a standard HDCP compliant video card it will send content to any HDCP display device. If you switch in the middle of a stream, it will re-negotiate with the the new device and play. If you are using an HDCP compliant splitter, you can even feed multiple devices. So, your scenario may be perfectly valid.  |  IP: Logged Venkat SIddareddy Film Handler Posts: 8 From: Hyderabad, Andhrapradesh, India Registered: Oct 2010 posted 05-04-2011 12:35 PM                        It looks like even HDCP is cracked. So what are the options now? Can I build a custom DVI cable and DVI port with a different pin config so that a stripper/splitter might not understand the signal? Is this done before? Is it possible at all?  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 05-04-2011 02:09 PM                     Please change the title of this thread to "E-cinema", not digital cinema. The way it reads now it will confuse some people into thinking it is capable of playing DCPs.  |  IP: Logged Terrence Meiczinger Film Handler Posts: 45 From: Orono, Me, USA Registered: Dec 2008 posted 05-04-2011 02:50 PM                        I wouldn't be too worried about the HDCP security compromise, especially not enough to go trying to engineer some proprietary hardware workaround. That sounds messy.  |  IP: Logged Venkat SIddareddy Film Handler Posts: 8 From: Hyderabad, Andhrapradesh, India Registered: Oct 2010 posted 05-04-2011 10:37 PM                        So, if I have a video card which supports HDCP, then there is no need for any implementation of HDCP logic?  |  IP: Logged Chris Slycord Film God Posts: 2986 From: 퍼항시, 경상푹도, South Korea Registered: Mar 2007 posted 05-05-2011 11:10 AM                     Correct. That is, assuming you have a display that itself supports HDCP also  |  IP: Logged Terrence Meiczinger Film Handler Posts: 45 From: Orono, Me, USA Registered: Dec 2008 posted 05-05-2011 03:28 PM                        Well, you'd still need to set the HDCP enable flags for high-value content and a few other things. It depends on how you plan on playing the content. You may want to purchase a middleware SDK, like Elliptic. An E-Cinema server is a bit more involved than just taking a PC and playing video to a digital projector.  |  IP: Logged Venkat SIddareddy Film Handler Posts: 8 From: Hyderabad, Andhrapradesh, India Registered: Oct 2010 posted 05-06-2011 12:50 AM                        Hi thanks for the information about Elliptic. I will try to get in touch with them. Our E-Cinema server contains not just playback but it is a completely automated application suite which includes playlist management, auto file ingest, logging, resumable playback, alternate content playback, support for ads, trailers and slides etc. The video itself is a 300Mbps with crystal clear uncompressed audio quality. The Video and audio files are encrypted. Apart from that we have a similar architecture to DCI interms of reel by reel video processing and the audio and video files are separate tracks.  |  IP: Logged

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