Quote:
Originally Posted by lkmiller
Ok Ken, let me go into all the details for why I have reached the conclusion that my credit card is no longer involved in encrypting the books on my account. I welcome you or any one else to poke holes in my conclusion. I would really love to be wrong about this.
I looked at 5 copies of the same book each downloaded when a different credit card was the default. I used the Tampermonkey script for each download. I signed out of my B&N account and exited my browser after each credit card change to make sure I was getting a fresh copy.
Copy #1 was downloaded when credit card #1 was the default.
Copy #2 was downloaded when I switched the default to cc#2 which was already on my account.
Both of these can be unlocked with my name (first last) and their respective cc number. Both of the credit cards have my name with the middle initial.
Copy #3 was downloaded after I added cc#3 with a completely different name and made it the default.
Copy #4 was downloaded after I switched back to cc#2.
Copy #5 was downloaded after I switched back to cc#1.
These last 3 copies will not unlock with any variation of my name, the cc name, or any combo that I could come up with.
I then took each copy of the book, changed its file extension from epub to zip, unzipped it, and compared the files inside there which handle the encryption (mainly a file called rights.xml). Copies 1, 2, and 3 are different from each other. Copies 3, 4, and 5 are identical.
Therefore, since the encryption previously changed when I changed my default credit and now it does not, I can only conclude that my credit card number is no longer involved. It may still use my B&N account name as one of the seeds to create the hash since that hasn't changed. But I can't see how it still uses the credit card number.
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I assume that you tried the exact data shown for the order number for copy 3?
Or do you not have an order number for copy 3, because you didn't make a purchase with that card? That you just changed the default data? Also, I take it none of the last 3 were downloaded using Nook for PC?
My current purchases downloaded by Nook for PC are unlocked using my CC data. I can't discuss here how I know that to be a fact, but it would be obvious to many here. I doubt that B&N would have singled you out for a different DRM process than what I must use to unlock my purchases.
Luck;
Ken