tools v2.2
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@@ -2,17 +2,18 @@ From Apprentice Alf's Blog
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Adobe Adept ePub and PDF, .epub, .pdf
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The wonderful I♥CABBAGES has produced scripts that will remove the DRM from ePubs and PDFs encryped with Adobe’s DRM. Installing these scripts is a little more complex that the Mobipocket and eReader decryption tools, as they require installation of the PyCrypto package for Windows Boxes. For Mac OS X and Linux boxes, these scripts use the already installed OpenSSL libcrypto so there is no additional requirements for these platforms.
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This directory includes modified versions of the I♥CABBAGES Adobe Adept inept scripts for epubs. These scripts have been modified to work with OpenSSL on Windows as well as Linux and Mac OS X. His original scripts can be found in the clearly labelled folder. If a Windows User has OpenSSL installed, these scripts will make use of it in place of PyCrypto.
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The wonderful I♥CABBAGES has produced scripts that will remove the DRM from ePubs and PDFs encryped with Adobe’s DRM. These scripts require installation of the PyCrypto python package *or* the OpenSSL library on Windows. For Mac OS X and Linux boxes, these scripts use the already installed OpenSSL libcrypto so there is no additional requirements for these platforms.
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For more info, see the author's blog:
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http://i-u2665-cabbages.blogspot.com/2009_02_01_archive.html
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There are two scripts:
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The first is called ineptkey_v5.pyw. Simply double-click to launch it and it will create a key file that is needed later to actually remove the DRM. This script need only be run once unless you change your ADE account information.
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The second is called in ineptepub_v5.pyw. Simply double-click to launch it. It will ask for your previously generated key file and the path to the book you want to remove the DRM from.
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The first is called ineptkey_v5.1.pyw. Simply double-click to launch it and it will create a key file that is needed later to actually remove the DRM. This script need only be run once unless you change your ADE account information.
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The second is called in ineptepub_v5.3.pyw. Simply double-click to launch it. It will ask for your previously generated key file and the path to the book you want to remove the DRM from.
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Both of these scripts are gui python programs. Python 2.X (32 bit) is already installed in Mac OSX. We recommend ActiveState's Active Python Version 2.X (32 bit) for Windows users.
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@@ -24,7 +24,7 @@
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# Improve OS X support by using OpenSSL when available
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# 5.1 - Improve OpenSSL error checking
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# 5.2 - Fix ctypes error causing segfaults on some systems
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# 5.3 - add support for OpenSSL on Windows, fix bug with some versions of libcrypto 0.9.8 prior to path level o
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"""
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Decrypt Adobe ADEPT-encrypted EPUB books.
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"""
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@@ -53,7 +53,11 @@ def _load_crypto_libcrypto():
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Structure, c_ulong, create_string_buffer, cast
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from ctypes.util import find_library
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libcrypto = find_library('crypto')
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if sys.platform.startswith('win'):
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libcrypto = find_library('libeay32')
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else:
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libcrypto = find_library('crypto')
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if libcrypto is None:
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raise ADEPTError('libcrypto not found')
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libcrypto = CDLL(libcrypto)
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@@ -116,6 +120,9 @@ def _load_crypto_libcrypto():
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class AES(object):
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def __init__(self, userkey):
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self._blocksize = len(userkey)
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if (self._blocksize != 16) and (self._blocksize != 24) and (self._blocksize != 32) :
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raise ADEPTError('AES improper key used')
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return
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key = self._key = AES_KEY()
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rv = AES_set_decrypt_key(userkey, len(userkey) * 8, key)
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if rv < 0:
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@@ -30,6 +30,7 @@
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# 4.4 - Make it working on 64-bit Python
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# 5 - Clean up and improve 4.x changes;
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# Clean up and merge OS X support by unknown
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# 5.1 - add support for using OpenSSL on Windows in place of PyCrypto
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"""
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Retrieve Adobe ADEPT user key.
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@@ -53,14 +54,76 @@ class ADEPTError(Exception):
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if sys.platform.startswith('win'):
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from ctypes import windll, c_char_p, c_wchar_p, c_uint, POINTER, byref, \
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create_unicode_buffer, create_string_buffer, CFUNCTYPE, addressof, \
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string_at, Structure, c_void_p, cast, c_size_t, memmove
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string_at, Structure, c_void_p, cast, c_size_t, memmove, CDLL, c_int, \
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c_long, c_ulong
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from ctypes.wintypes import LPVOID, DWORD, BOOL
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import _winreg as winreg
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try:
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from Crypto.Cipher import AES
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except ImportError:
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def _load_crypto_libcrypto():
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from ctypes.util import find_library
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libcrypto = find_library('libeay32')
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if libcrypto is None:
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raise ADEPTError('libcrypto not found')
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libcrypto = CDLL(libcrypto)
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AES_MAXNR = 14
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c_char_pp = POINTER(c_char_p)
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c_int_p = POINTER(c_int)
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class AES_KEY(Structure):
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_fields_ = [('rd_key', c_long * (4 * (AES_MAXNR + 1))),
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('rounds', c_int)]
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AES_KEY_p = POINTER(AES_KEY)
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def F(restype, name, argtypes):
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func = getattr(libcrypto, name)
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func.restype = restype
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func.argtypes = argtypes
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return func
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AES_set_decrypt_key = F(c_int, 'AES_set_decrypt_key',
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[c_char_p, c_int, AES_KEY_p])
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AES_cbc_encrypt = F(None, 'AES_cbc_encrypt',
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[c_char_p, c_char_p, c_ulong, AES_KEY_p, c_char_p,
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c_int])
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class AES(object):
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def __init__(self, userkey):
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self._blocksize = len(userkey)
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if (self._blocksize != 16) and (self._blocksize != 24) and (self._blocksize != 32) :
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raise ADEPTError('AES improper key used')
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key = self._key = AES_KEY()
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rv = AES_set_decrypt_key(userkey, len(userkey) * 8, key)
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if rv < 0:
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raise ADEPTError('Failed to initialize AES key')
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def decrypt(self, data):
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out = create_string_buffer(len(data))
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iv = ("\x00" * self._blocksize)
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rv = AES_cbc_encrypt(data, out, len(data), self._key, iv, 0)
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if rv == 0:
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raise ADEPTError('AES decryption failed')
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return out.raw
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return AES
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def _load_crypto_pycrypto():
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from Crypto.Cipher import AES as _AES
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class AES(object):
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def __init__(self, key):
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self._aes = _AES.new(key, _AES.MODE_CBC)
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def decrypt(self, data):
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return self._aes.decrypt(data)
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return AES
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def _load_crypto():
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AES = None
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for loader in (_load_crypto_libcrypto, _load_crypto_pycrypto):
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try:
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AES = loader()
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break
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except (ImportError, ADEPTError):
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pass
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return AES
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AES = _load_crypto()
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DEVICE_KEY_PATH = r'Software\Adobe\Adept\Device'
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PRIVATE_LICENCE_KEY_PATH = r'Software\Adobe\Adept\Activation'
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@@ -230,7 +293,7 @@ if sys.platform.startswith('win'):
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if AES is None:
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tkMessageBox.showerror(
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"ADEPT Key",
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"This script requires PyCrypto, which must be installed "
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"This script requires PyCrypto or OpenSSL which must be installed "
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"separately. Read the top-of-script comment for details.")
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return False
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root = GetSystemDirectory().split('\\')[0] + '\\'
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@@ -274,7 +337,8 @@ if sys.platform.startswith('win'):
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if userkey is None:
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raise ADEPTError('Could not locate privateLicenseKey')
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userkey = userkey.decode('base64')
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userkey = AES.new(keykey, AES.MODE_CBC).decrypt(userkey)
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aes = AES(keykey)
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userkey = aes.decrypt(userkey)
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userkey = userkey[26:-ord(userkey[-1])]
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with open(keypath, 'wb') as f:
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f.write(userkey)
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