>I came across a company called InterTrust that claims to have developed a
>system whereby digital content can be downloaded to a user's PC, the user
>be required to pay for 'rights' to use the content under certain 'rules'
>set by the content provider and yet the user will somehow be prevented
>from copying, duplicating or distributing the content. This system is
>supposed to work offline.
This can't be done without adding lots of additional hardware to the user's
PC. You really need to have a decrypting display device, so that the
decrypted datastream is not present anywhere in the PC. Otherwise, you can
definitely extract the decrypted data from somewhere in the PC. Intel has
recently talked about such a decrypting display, BTW.
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Mark Leighton Fisher [EMAIL PROTECTED]
Thomson Consumer Electronics Indianapolis IN
"Their walls are built of cannon balls,
Their motto is 'don't tread on me'"
