How to remove DRM from sony ebooks (BBeB and EPUB) with ineptkey.pyw, inepepub.pyw

I have lots of sony ebooks in BBeB and EPUB that I would like to remove the drm from. Is this possible?? Can someone explain how to do this please???

It is possible to remove DRM protection from EPUB files using free python scripts:

Circumventing Adobe ADEPT (Adobe Digital Experience Protection Technology) DRM for EPUB:

By way of a concrete reverse-engineering contribution, I have successfully circumvented Adobe's ADEPT DRM scheme for EPUB files. The same circumvention probably also allows decryption of ADEPT-encrypted PDF files, although I haven't looked into it yet.

ADEPT is pretty close to faultless as a crypto system -- a per-user RSA key encrypts a per-book AES key which encrypts the content. It uses AES in CBC mode with a random IV. It uses RSA with PKCS#1 v1.5 padding, which is perfectly adequate for this case. Unfortunately for Adobe, this isn't a crypto system, but a DRM system. DRM systems ultimately depend not on the strength of their cryptography, but the complexity of their obfuscation. There is very little obfuscation in how Adobe Digital Editions hides and encrypts the per-user RSA key, allowing fairly simple duplication of exactly the same process Digital Editions uses to retrieve it.

In practical terms, this breaks ADEPT circumvention into two components: key retrieval and decryption. Key retrieval depends only on the details of Digital Editions and can change seamlessly with an update to the same. Decryption however is a property of the architecture of the system as a whole. Preventing circumventing decryption with previously retrieved keys would require changes to both DE and Adobe Content Server and would take quite some time to propagate to all ACS customers. The upshot being that if you want to decrypt ADEPT books in the future, grab your key now -- no garauntees that you'll be able to do so in the future, but a previously-retrieved key should keep on working.

Here are the scripts:
Key-retrieval script (ineptkey.pyw version 3) and Decryption script (ineptepub.pyw version 2):

http://pastebin.com/f26972321
http://pastebin.com/f28fdd6b3

To use:

1. install Python 2.6+ (32bit) and PyCrypto,
2. run the key-retrieval script ineptkey.pyw,
3. then run the decryption script ineptepub.pyw using the retrieved key.

And on a preachy note, please don't be a jerk with these. DRM is bad, but piracy is wrong kids, and only validates the opinions of those who think they need DRM in the first place.

[hopscotch]

Originally Posted by Stream Recorder

It is possible to remove DRM protection from EPUB files using free python scripts:

Circumventing Adobe ADEPT (Adobe Digital Experience Protection Technology) DRM for EPUB:

Thank you Stream Recorder, you are a genius. Was given Xmas present that was the wrong ebook for my reader. You have solved my problem.

[radcontra]

IDLE 2.6.4
>>> C\freePDF\ineptkey.pyw
SyntaxError: unexpected character after line continuation character
>>>

I'm fairly unskilled about this stuff, but what am I doing wrong?

I get this error in both Python (command line) and Command prompt, too.

[radcontra]

Originally Posted by radcontra

I'm fairly unskilled about this stuff, but what am I doing wrong?

I get this error in both Python (command line) and Command prompt, too.

I finally ran the two programs, and I'm happy to report I can read in ADE the book I previously bought. The victory is pyrrhic, however, because Powell's stops purchase of new ebooks with the same geographical restrictions at purchase.

This only works with ADE. Powell's has changed its purchasing policy, so I can no longer buy ebooks I cannot legally read. I bought a number of ADE ebooks before this policy change that became unreadable. I cannot test this procedure with Palm ebooks, because all my current Palm books are legally readable, and now I cannot buy new ones.

Thanks!

[ryanjul]

Originally Posted by Stream Recorder

It is possible to remove DRM protection from EPUB files using free python scripts:

Circumventing Adobe ADEPT (Adobe Digital Experience Protection Technology) DRM for EPUB:

Just to say thank you . It works perfectly. Hooray for Python and you.

1. Install Adobe Flash Player
   

   http://get.adobe.com/flashplayer/

2. Install Adobe Digital Editions (ADE)
   

   http://www.adobe.com/products/digitaleditions/

3. Authorize your copy of Adobe Digital Editions.
   
4. Install Python
5. Install PyCrypto
   
6. Download ineptkey.pyw and ineptepub.pyw and put them into one directory.
   
7. Run ineptkey.pyw. It will find the key and write it to hard disk as "ADEPTKEY.DER " in the same directory where ineptkey.pyw is.
8. Run ineptepub.pyw
   A dialog windows with three parameters will pop up :
   • Key file ADEPTKEY.DER (filled automatically if the ADEPTKEY.DER-file and ineptepub.pyw reside in the same directory)
     If not, click on the "…" button and select a file.
   • Input file
     Click on the "…" button to choose your EPUB ebook. You'll find it in "My Documents\My Digital Editions".
     If you just can't find the EPUB ebook, open Adobe Digital Editions and find the path in the properties of the ebook.
   • Output file
     Click on the "…" and enter a filename.
9. Open your newly created DRM-free EPUB file with your favorite application (on whatever device you like)

Download Key-retrieval script

ineptkey.pyw version 5:

http://pastie.org/1030386

ineptkey.pyw 4.3:

http://pastebin.com/f6ffa029

Download ineptepub.pyw:

ineptepub.pyw version 5.2

http://pastie.org/1032773

ineptepub.pyw version 2

http://wiki.xkyle.com/Epub_Decrypter

Download aineptepub.pyw version 4.1

http://pastebin.com/f4a7c338a

See also:
ebook DRM removal tools archive

[any ANONYMOUS forum user]

I get the following error message when trying to remove DRM from EPUB with python scripts:
Error : Unexpected EOF

I downloaded ineptkey.pyw and ineptpdf.pyw. Then

• Extracted the key with ineptkey.pyw (v3) and got an adeptkey.der file
• Tried to remove the DRM from the epub file with ineptpdf.pyw (v2)
  and it failed with the error : "Error : Unexpected EOF"

The error message occurs on nextline() function with linepos variable value 970.630.

The ebook is 970.691 bytes long.

Please help

Originally Posted by any ANONYMOUS forum user

I get the following error message when trying to remove DRM from EPUB with python scripts:
Error : Unexpected EOF

I downloaded ineptkey.pyw and ineptpdf.pyw. Then

• Extracted the key with ineptkey.pyw (v3) and got an adeptkey.der file
• Tried to remove the DRM from the epub file with ineptpdf.pyw (v2)
  and it failed with the error : "Error : Unexpected EOF"

The error message occurs on nextline() function with linepos variable value 970.630.

The ebook is 970.691 bytes long.

You need to use ineptkey.pyw and ineptepub.pyw to remove DRM from EPUB files, because ineptpdf.pyw is intended to be used with PDF files.

[any ANONYMOUS forum user]

I just went through this how-to for removing drm from epub files. It saved me hours of tearing my hair out.
I had bought a book on booksonboard, but it came in epub format which is supported by stanza (for the iphone). However drm'd epubs are not supported (I found out after I buy my non-refundable ebook).

Finally came across your post and it worked first time like a charm.