At 3:12 PM -0700 5/1/02, [EMAIL PROTECTED] wrote:
>Seems to me that oneof the keys to permanently unlocking sat TV is 
>to do away with the vendor's receiver.  From my novice perspective, 
>it seems many or most of the attacks against pirate devices are 
>based on the assumption that the pirate must still have a set-top 
>box which is still, indirectly, under control of the service 
>provider (that is its unmodified).  What if an affordable software 
>based radio replaced the set-top box and the smart card 
>functionality?  It would seem to me that 3M (Three Musketeer) 
>attacks, wherein one or more legal purchasers of the service 
>broadcast in real-time the required stream decryption codes over 
>ICQ/IRQ to all the other SDR boxes.  This must have been thought of 
>or already tried.  What am I missing Peter?

Nothing. I think that's correct. The only problem is broadcasting the 
keys is not simple. The latest systems change keys frequently-- as 
often as every 20 or 30 seconds I seem to remember. If you change the 
channel, you need a new key. It's not like the old days when the key 
changed daily or monthly.

If you have such a service broadcasting the keys, it's not too hard 
to track you down. So I think it's not a practical solution.

-Peter

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