Thread: Seriously, kobo?? Brand new and already dead?
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Old 06-05-2010, 02:49 PM   #33
Stinger
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Posts: 335
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Join Date: May 2010
Location: Canada
Device: Kobo
Quote:
Originally Posted by DHR View Post
Can you switch ereaders without losing the DRMed books you've bought?

I have no idea: I haven't dealt with any DRMed books yet. I do understand the general cryptographic concepts, I think.

For DRM systems to work, the DRMed object must be tied to something unique to the "user" (eg. your computer or your ereader or perhaps some kind of online account). What are ebooks sold by Kobo or Chapters tied to? What are Adobe DRMed books tied to?
Dunno about how Kobo handles DRM with their SQlite database scheme, but I assume it's still ADE encryped content, in a database instead of a epub.

You are assigned a crypto-key that's associated with your account. You are allowed to authorize a set number (5?) of devices or computers (essentially, giving them your crypto-key). After that, you need to call Adobe and request that you be allowed to authorize further devices.
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