Quote:
Originally Posted by pdurrant
The device ID is combined with some metadata inside the book to generate the book key that is used to get the actual decryption key to decrypt the book.
Oddly, every book on a recent Kindle has a difference book key, unlike books on Kindle for iOS which all use the same book key, or did last time I looked.
|
What is the purpose of that? How is it more secure than a per-device key, which practically speaking it is?