[opendtv] Re: FCC R&O on MVPD program sources
- From: Michael Enright <michael.enright@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 21 Jan 2010 17:38:47 -0800
I don't know specifics but isn't Cable TV encrypted? Isn't Satellite
TV encrypted? These are both broadcast (in the one case the broadcast
is that all the homes on the same cable see the same signals) and
somehow they control what each subscriber sees. Why couldn't the
proposed signals use the same kind of system?
On Thu, Jan 21, 2010 at 3:04 PM, Tom Barry <trbarry@xxxxxxxxxxx> wrote:
> 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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