Quote:
Originally Posted by Ken Maltby
The "Seed" that the reader and the tools need to generate the "Hash", (that is used to unlock the file, if it matches what is in the file) can not be changed for those readers or tools, without loss of the ability to unlock the files.
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Not if there's already backup/alternate methods for encrypting/decrypting built into the device/application--and have been for a while. There's no reason to assume that there's one key, and one key only, that will unlock each book (nor that the devices/apps don't attempt those keys sequentially until one works).
Readmill used a VendorID to unlock uploaded Adobe encrypted epubs without having access to a user's Adobe ID. Yes B&N's passhash method is a different variation than the "usual" Adobe Adept encryption, but it's still provided by Adobe.
But all that would still suggest that
reading on approved devices probably wouldn't be affected--only that current DRM-removal procedures
might fail upon downloading new files/purchases.