Adobe ADEPT DRM for EPUB circumvented

[joblack]

Originally Posted by JSWolf

#! /usr/bin/python

# ineptkey.pyw, version 4
 
# To run this program install Python 2.6 from http://www.python.org/download/
# and PyCrypto from http://www.voidspace.org.uk/python/modules.shtml#pycrypto
# (make sure to install the version for Python 2.6).  Save this script file as
# ineptkey.pyw and double-click on it to run it.  It will create a file named
# adeptkey.der in the same directory.  This is your ADEPT user key.
 
# Revision history:
#   1 - Initial release, for Adobe Digital Editions 1.7
#   2 - Better algorithm for finding pLK; improved error handling
#   3 - Rename to INEPT
#   4 - quick beta fix for ADE 1.7.2 (anon)

I did say this doesn't work on my system. Well, I made a simple code change and now it works. I cannot say it works on all systems. But it does work on mine which is Windows 7 with ADE 1.7.2 upgraded from 1.7.1.

ADE has three different private keys in the registry. One of it is working - the problem is that they aren't always on the same place - they seem to be placed by the 'shotgun principle'. Perhaps it's some kind of obfuscation.

[JSWolf]

Originally Posted by joblack

ADE has three different private keys in the registry. One of it is working - the problem is that they aren't always on the same place - they seem to be placed by the 'shotgun principle'. Perhaps it's some kind of obfuscation.

What I am thinking is that it is the key for the reg entry that has @="licenseCertificate" as the line in front of the value is the entry you want for the key. If I am correct, That should make it easy to pull out the proper key. However, if I am incorrect, all you'd need do is try the other values based on the different @ lines and then you'll know which is which.

[joblack]

Originally Posted by JSWolf

What I am thinking is that it is the key for the reg entry that has @="licenseCertificate" as the line in front of the value is the entry you want for the key. If I am correct, That should make it easy to pull out the proper key. However, if I am incorrect, all you'd need do is try the other values based on the different @ lines and then you'll know which is which.

The licenseCertificate is not the key and it is in all three registry entries included. The problem is you can't try the key without the book. One solution would be to export all keys and try it in the ineptpdf/epub scripts but then you have to change these scripts too. I thought the key is always the last one but your example showed that it isn't the case.

[pietvo]

I also found a solution for Mac OS X but I don't have the newest Applescript in an editable format. However, I could make a python script to do it. Distributing this might be a problem however, due to the Sklyarov syndrome.

[EowynCarter]

Originally Posted by joblack

The licenseCertificate is not the key and it is in all three registry entries included. The problem is you can't try the key without the book. One solution would be to export all keys and try it in the ineptpdf/epub scripts but then you have to change these scripts too. I thought the key is always the last one but your example showed that it isn't the case.

In my case, it was the seocnd. i basiclly did trial and error.

[JSWolf]

Deleted

[bookwyrm]

Hello everyone, I got a kindle about 2 years ago but am only now exploring the possibilities of trying to read electronic library books on my kindle since reading them on my MAC laptop is proving painful and cumbersome.
I've read most of the information on this site regarding removing drm from the library books to read on my kindle but am coming up with what I hope is a fixable error.
I have python 2.6 loaded, believe pycrypto is also loaded (not sure since there was not an install feature but when I click on the ineptpub v2 instead of a box opening up as stated in the instructions instead I get a line of script.
Has anyone run into this issue before? How do I resolve? Thanks

Example below

# To run this program install Python 2.6 from http://www.python.org/download/
# and PyCrypto from http://www.voidspace.org.uk/python/m...shtml#pycrypto
# (make sure to install the version for Python 2.6). Save this script file as
# ineptepub.pyw and double-click on it to run it.

# Revision history:
# 1 - Initial release
# 2 - Rename to INEPT, fix exit code

"""
Decrypt Adobe ADEPT-encrypted EPUB books.
"""

from __future__ import with_statement

__license__ = 'GPL v3'

import sys
import os
import zlib
import zipfile
from zipfile import ZipFile, ZIP_STORED, ZIP_DEFLATED
from contextlib import closing
import xml.etree.ElementTree as etree
import Tkinter
import Tkconstants
import tkFileDialog
import tkMessageBox

try:
from Crypto.Cipher import AES
from Crypto.PublicKey import RSA
except ImportError:
AES = None
RSA = None

[pietvo]

Select the file in Finder and do CMD-i. This should indicate with what program the file will be opened. It should be Pythonlauncher. For some reason with me Pythonlauncher will also open a Terminal window which is innocent.

[JSWolf]

I do think we are getting close to a real solution for 1.7.2.

[joblack]

Originally Posted by JSWolf

I do think we are getting close to a real solution for 1.7.2.

#
#! /usr/bin/python
#
# ineptkey.pyw, version 4.1
#
# To run this program install Python 2.6 from http://www.python.org/download/
#
# and PyCrypto from http://www.voidspace.org.uk/python/m...shtml#pycrypto
#
# (make sure to install the version for Python 2.6). Save this script file as
# ineptkey.pyw and double-click on it to run it. It will create a file named
# adeptkey.der in the same directory. This is your ADEPT user key.
#
# Revision history:
#
# 1 - Initial release, for Adobe Digital Editions 1.7
# 2 - Better algorithm for finding pLK; improved error handling
# 3 - Rename to INEPT
# 4.1 - quick beta fix for ADE 1.7.2 (doesn't work with ADE 1.7.1) (anon)

Works definitely not with ADE 1.7.1 or smaller but should do the trick.

[JSWolf]

Originally Posted by joblack

#
#! /usr/bin/python
#
# ineptkey.pyw, version 4.1
#
# To run this program install Python 2.6 from http://www.python.org/download/
#
# and PyCrypto from http://www.voidspace.org.uk/python/m...shtml#pycrypto
#
# (make sure to install the version for Python 2.6). Save this script file as
# ineptkey.pyw and double-click on it to run it. It will create a file named
# adeptkey.der in the same directory. This is your ADEPT user key.
#
# Revision history:
#
# 1 - Initial release, for Adobe Digital Editions 1.7
# 2 - Better algorithm for finding pLK; improved error handling
# 3 - Rename to INEPT
# 4.1 - quick beta fix for ADE 1.7.2 (doesn't work with ADE 1.7.1) (anon)

Works definitely not with ADE 1.7.1 or smaller but should do the trick.

It worked on the desktop, but not on the laptop. Neither had any errors. Just on the laptop it did not generate a valid key file.

[joblack]

Originally Posted by JSWolf

It worked on the desktop, but not on the laptop. Neither had any errors. Just on the laptop it did not generate a valid key file.

Have you upgraded from 1.7.1 to 1.7.2 on your laptop or have you reinstalled it.

[bookwyrm]

Thanks for the earlier assistance I was able to use cmd-i to change IDLE to Python launcher as the application launcher. Unfortunately still having issues, it is now indicating that Pycrypto needs to be installed. I downloaded Pycrypto now multiple times and have clicked on each folder within the application. Is there a specific folder I need to re-install or do something special with to ensure the installation took on a MAC? Apologies for needing the dummies guide to this.

[JSWolf]

Originally Posted by joblack

Have you upgraded from 1.7.1 to 1.7.2 on your laptop or have you reinstalled it.

I've upgraded ADE to 1.7.2 on the laptop.

[pthwaite]

bookwyrm,
Have you got the developer tools installed on your MAC? It will all go belly up unless they are installed.