RE: DVB, DAVIC and MPEG stuff

[hakulinh@research.nokia.com (Hakulinen Harri NRC/Tre)]

  -> From: Henry Sinnreich
  -> Thanks for the excellent summary. Is there a way to get the latest 
drafts
  -> online from somewhere, like from an ftp site ? Up-to-date DAB and MPEG
  -> standards seem to be harder to get here.

Well, if you are a member of those bodies, it's rather easy, but otherwise I 
don't know any easy method ...

  -> The rationale for hardware demux is obvious, but I wonder why we could 
not use
  -> standard IP security mechanisms in higher layers for access control. In 
final
  -> instance, that key in the browser comes for free. Would appreciate any
  -> comments.

I think that we will, we can and we are going to do that. I can't see any 
way to forbid the use of higher layer security protocols.

But I think that almoust all Satellite/Cable/... operators want use their 
normal condition access systems to control the access to the stream itself 
(and possibly known parts of it).

So CA in MPEG TS level is some kind of "MAC-layer" security mechanism, like 
scrambling in some "secure ethernet" hubs nowadays.

I realize, that there might be some "IP-level" security possibilities also 
with CA systems, but as far as I know, those are far beyond the current CA 
implementations(and the performance of them).

  -> >I continue with unidirectional link case tomorrow, because it seems 
that
  -> >today its almoust first sunny day in Finland in this summer ...

And it continues ...  see you after the sunny season :)

 - Harri