[opendtv] Re: FCC R&O on MVPD program sources
- From: Tom Barry <trbarry@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 21 Jan 2010 18:04:18 -0500
Craig Birkmaier wrote:
> ...
>
> As for terrestrial broadcasters having access to this content, I'm
> sure they would find a way...
>
> IF they could figure out how to encrypt the content and charge enough
> to pay for it.
...
The problem with a "broadcast" is the same content is sent to
everybody. So encrypting it is easy but however you encrypt it I think
everybody can decrypt it with the same key. If you have a 2-way slow
side channel of some sort then you can make people use some sort of
authentication to get that key, and change it often. However in this
age of instant electronic communications I don't see any way to stop
people from immediately sharing that key and thus making the encrypted
stream available to anyone else.
Anybody know of any public/private key crypto magic that gets around
this problem?
- Tom
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