Quote:
Originally Posted by calvin-c
Of course this is theoretical as I don't believe unbreakable DRM is practical. The only method I can think of would be requiring a buyer to create a public/private key pair for each bookseller. The bookseller could encrypt the purchase with the buyer's public key so only the buyer could decrypt it. I'm still not sure it'd actually work but even if it did I suspect it would so greatly increase the seller's administrative overhead, and decrease their sales, that it wouldn't be practical. But that's just MO.
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Ummm….. you may not have noticed, but in the scheme you suggest, the buyer has the private key needed to decrypt the content.
When we discuss unbreakable DRM, we don't mean DRM that's unbreakable by a third party, but a DRM that prevents the person buying the product from obtaining a DRM-free version of the product from the DRMed product.