1. How to remove DRM protection from EPUB ebooks
Barnes & Noble uses its own DRM scheme for some EPUB books. It's a variant of the
Adobe ADEPT scheme, and all the Adobe SDK users will get access to it eventually.
The problem is that many consumers can’t read B&N books on their ebook readers.
Tips:
• Nook DRM Removal can helps you remove DRM from Nook ePUB with 1-click
• How Transfer Protected ePUB to supported devices with Adobe Digital Editions
• How to remove DRM from Adobe epub
• Convert ePUB to azw/prc/mobi/tpz for reading on Kindle
• Best ePUB Builder Freeware, help you creat your epub books
Circumventing Barnes & Noble DRM for EPUB using Python Scripts
In a move sure to leave consumers scratching their heads (especially the ones
already wondering why they bought a Nook), Barnes & Noble has decided to implement
their own DRM scheme for EPUB books. They partnered with Adobe to do it (it’s a
variant of their ADEPT scheme), and all the Adobe SDK users will get access to it
eventually. But for now much hilarity ensues as consumers buy books they can’t
read on their devices.
The basic idea behind the B&N EPUB scheme is the same as that used by the ill-fated
eReader format B&N acquired –
book-
step 1: generate an encryption key from the book-purchaser’s name + credit card;
step 2: hope that they don’t like giving that information out to strangers. They
like to call this a form of “social DRM,” although I believe a more appropriate
term is “silly.”
It would be very bad form for an application to keep user CC#s just sitting around
on disk, so the Windows version of the Barnes & Noble Desktop Reader application
(BDReader just holds on to the generated key and not the source info. A wise
BDReader)
BDReader
decision, for which I congratulate them. It then stores this key in plain text in
a sqlite3 database. An... interesting... decision, for which I thank them. Update
Update:
and then it turned out the key-generation algorithm was pretty easy too...
So now three scripts:
A Windows-only key-retrieval script: ignoblekey (version 2)
Copyright: http://www.epubor.com | Epubor

2. An any-platform key-generation script: ignoblekeygen (version 1)
And an any-platform book-decryption script: ignobleepub (version 1)
You need the decryption script and one of either the key-retrieval or key-generation
scripts. They produce the same output, and the key-generator works on any platform,
but I released the Windows key-retrieval script first and will leave it up for
Windows users who’d rather not give their credit card number to random programs
they download off the Internet (despite being a source-visible script and all).
For good only, please.
Quote:
The basic idea behind the B&N EPUB scheme is the same as that used by the ill-fated eReader
format B&N acquired:
step 1: generate an encryption key from the book-purchaser's name + credit card #
step 2: hope that they don't like giving that information out to strangers. They like to call this a
form of "social DRM", although I believe a more appropriate term is "silly".
It would be very bad form for an application to keep user CC#s just sitting around on disk, so the
Windows version of the Barnes & Noble Desktop Reader application (BDReader) just holds on to
the generated key and not the source info. A wise decision, for which I congratulate them. It
then stores this key in plain text in a sqlite3 database. An... interesting... decision, for which I
thank them. Update: and then it turned out the key-generation algorithm was pretty easy too...
Software to remove DRM from B&N EPUB ebooks:
A Windows-only key-retrieval script: ignoblekey (version 2)
Code:http://pastie.org/751573
An any-platform key-generation script: ignoblekeygen (version 1)
Code: http://pastie.org/753985
And an any-platform book-decryption script: ignobleepub (version 1)
Code: http://pastie.org/751366
Copyright: http://www.epubor.com | Epubor

3. You need the decryption script and one of either the key-retrieval or key-generation
scripts. They produce the same output. The key-generator works on any platform.
The Windows key-retrieval script can get access to your credit card (despite being
an open-source script).
If you get the following error after running ignoblekey.pyw
"Error: Problem decoding key; unexpected DB format?
Error: format?"
you can either find and delete your 'ClientAPI_v012.db' file then re-authorize
BDReader with your account information,
or just use the key-derivation script (ignoblekeygen).
Both ignoblekey and ignoblekeygen will produce the same output when they work
correctly.
Usefull article: How to remove drm from epub on Adobe Digital Editions
Keywords: Remove Drm from ePub,,Remove eBooks Drm,ePub Drm Remove
Source: http://www.epubor.com/how-to-remove-drm-protection-from-epub-ebooks.html
Copyright: http://www.epubor.com | Epubor