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331 lines
11 KiB
Python
331 lines
11 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# ignoblekeygen.py
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# Copyright © 2009-2020 i♥cabbages, Apprentice Harper et al.
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# Released under the terms of the GNU General Public Licence, version 3
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# <http://www.gnu.org/licenses/>
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# Windows users: Before running this program, you must first install Python.
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# We recommend ActiveState Python 2.7.X for Windows (x86) from
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# http://www.activestate.com/activepython/downloads.
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# You must also install PyCrypto from
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# http://www.voidspace.org.uk/python/modules.shtml#pycrypto
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# (make certain to install the version for Python 2.7).
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# Then save this script file as ignoblekeygen.pyw and double-click on it to run it.
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#
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# Mac OS X users: Save this script file as ignoblekeygen.pyw. You can run this
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# program from the command line (python ignoblekeygen.pyw) or by double-clicking
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# it when it has been associated with PythonLauncher.
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# Revision history:
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# 1 - Initial release
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# 2 - Add OS X support by using OpenSSL when available (taken/modified from ineptepub v5)
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# 2.1 - Allow Windows versions of libcrypto to be found
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# 2.2 - On Windows try PyCrypto first and then OpenSSL next
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# 2.3 - Modify interface to allow use of import
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# 2.4 - Improvements to UI and now works in plugins
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# 2.5 - Additional improvement for unicode and plugin support
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# 2.6 - moved unicode_argv call inside main for Windows DeDRM compatibility
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# 2.7 - Work if TkInter is missing
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# 2.8 - Fix bug in stand-alone use (import tkFileDialog)
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# 3.0 - Added Python 3 compatibility for calibre 5.0
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"""
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Generate Barnes & Noble EPUB user key from name and credit card number.
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"""
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__license__ = 'GPL v3'
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__version__ = "3.0"
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import sys
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import os
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import hashlib
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import base64
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# Wrap a stream so that output gets flushed immediately
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# and also make sure that any unicode strings get
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# encoded using "replace" before writing them.
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class SafeUnbuffered:
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def __init__(self, stream):
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self.stream = stream
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self.encoding = stream.encoding
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data, str):
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data = data.encode(self.encoding,"replace")
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self.stream.buffer.write(data)
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self.stream.buffer.flush()
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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iswindows = sys.platform.startswith('win')
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isosx = sys.platform.startswith('darwin')
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def unicode_argv():
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if iswindows:
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# Uses shell32.GetCommandLineArgvW to get sys.argv as a list of Unicode
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# strings.
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# Versions 2.x of Python don't support Unicode in sys.argv on
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# Windows, with the underlying Windows API instead replacing multi-byte
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# characters with '?'. So use shell32.GetCommandLineArgvW to get sys.argv
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# as a list of Unicode strings and encode them as utf-8
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from ctypes import POINTER, byref, cdll, c_int, windll
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from ctypes.wintypes import LPCWSTR, LPWSTR
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GetCommandLineW = cdll.kernel32.GetCommandLineW
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GetCommandLineW.argtypes = []
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GetCommandLineW.restype = LPCWSTR
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CommandLineToArgvW = windll.shell32.CommandLineToArgvW
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CommandLineToArgvW.argtypes = [LPCWSTR, POINTER(c_int)]
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CommandLineToArgvW.restype = POINTER(LPWSTR)
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cmd = GetCommandLineW()
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argc = c_int(0)
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argv = CommandLineToArgvW(cmd, byref(argc))
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if argc.value > 0:
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# Remove Python executable and commands if present
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start = argc.value - len(sys.argv)
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return [argv[i] for i in
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range(start, argc.value)]
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# if we don't have any arguments at all, just pass back script name
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# this should never happen
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return ["ignoblekeygen.py"]
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else:
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argvencoding = sys.stdin.encoding or "utf-8"
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return [arg if isinstance(arg, str) else str(arg, argvencoding) for arg in sys.argv]
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class IGNOBLEError(Exception):
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pass
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def _load_crypto_libcrypto():
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from ctypes import CDLL, POINTER, c_void_p, c_char_p, c_int, c_long, \
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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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if iswindows:
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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 IGNOBLEError('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_encrypt_key = F(c_int, 'AES_set_encrypt_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, iv):
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self._blocksize = len(userkey)
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self._iv = iv
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key = self._key = AES_KEY()
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rv = AES_set_encrypt_key(userkey, len(userkey) * 8, key)
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if rv < 0:
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raise IGNOBLEError('Failed to initialize AES Encrypt key')
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def encrypt(self, data):
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out = create_string_buffer(len(data))
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rv = AES_cbc_encrypt(data, out, len(data), self._key, self._iv, 1)
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if rv == 0:
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raise IGNOBLEError('AES encryption 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, iv):
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self._aes = _AES.new(key, _AES.MODE_CBC, iv)
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def encrypt(self, data):
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return self._aes.encrypt(data)
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return AES
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def _load_crypto():
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AES = None
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cryptolist = (_load_crypto_libcrypto, _load_crypto_pycrypto)
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if sys.platform.startswith('win'):
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cryptolist = (_load_crypto_pycrypto, _load_crypto_libcrypto)
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for loader in cryptolist:
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try:
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AES = loader()
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break
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except (ImportError, IGNOBLEError):
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pass
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return AES
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AES = _load_crypto()
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def normalize_name(name):
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return ''.join(x for x in name.lower() if x != ' ')
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def generate_key(name, ccn):
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# remove spaces and case from name and CC numbers.
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name = normalize_name(name)
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ccn = normalize_name(ccn)
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if type(name)==str:
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name = name.encode('utf-8')
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if type(ccn)==str:
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ccn = ccn.encode('utf-8')
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name = name + b'\x00'
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ccn = ccn + b'\x00'
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name_sha = hashlib.sha1(name).digest()[:16]
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ccn_sha = hashlib.sha1(ccn).digest()[:16]
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both_sha = hashlib.sha1(name + ccn).digest()
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aes = AES(ccn_sha, name_sha)
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crypt = aes.encrypt(both_sha + (b'\x0c' * 0x0c))
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userkey = hashlib.sha1(crypt).digest()
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return base64.b64encode(userkey)
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def cli_main():
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sys.stdout=SafeUnbuffered(sys.stdout)
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sys.stderr=SafeUnbuffered(sys.stderr)
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argv=unicode_argv()
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progname = os.path.basename(argv[0])
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if AES is None:
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print("%s: This script requires OpenSSL or PyCrypto, which must be installed " \
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"separately. Read the top-of-script comment for details." % \
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(progname,))
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return 1
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if len(argv) != 4:
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print("usage: {0} <Name> <CC#> <keyfileout.b64>".format(progname))
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return 1
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name, ccn, keypath = argv[1:]
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userkey = generate_key(name, ccn)
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open(keypath,'wb').write(userkey)
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return 0
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def gui_main():
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try:
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import tkinter
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import tkinter.constants
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import tkinter.messagebox
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import tkinter.filedialog
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import traceback
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except:
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return cli_main()
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class DecryptionDialog(tkinter.Frame):
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def __init__(self, root):
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tkinter.Frame.__init__(self, root, border=5)
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self.status = tkinter.Label(self, text="Enter parameters")
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self.status.pack(fill=tkinter.constants.X, expand=1)
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body = tkinter.Frame(self)
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body.pack(fill=tkinter.constants.X, expand=1)
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sticky = tkinter.constants.E + tkinter.constants.W
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body.grid_columnconfigure(1, weight=2)
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tkinter.Label(body, text="Account Name").grid(row=0)
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self.name = tkinter.Entry(body, width=40)
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self.name.grid(row=0, column=1, sticky=sticky)
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tkinter.Label(body, text="CC#").grid(row=1)
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self.ccn = tkinter.Entry(body, width=40)
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self.ccn.grid(row=1, column=1, sticky=sticky)
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tkinter.Label(body, text="Output file").grid(row=2)
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self.keypath = tkinter.Entry(body, width=40)
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self.keypath.grid(row=2, column=1, sticky=sticky)
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self.keypath.insert(2, "bnepubkey.b64")
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button = tkinter.Button(body, text="...", command=self.get_keypath)
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button.grid(row=2, column=2)
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buttons = tkinter.Frame(self)
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buttons.pack()
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botton = tkinter.Button(
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buttons, text="Generate", width=10, command=self.generate)
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botton.pack(side=tkinter.constants.LEFT)
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tkinter.Frame(buttons, width=10).pack(side=tkinter.constants.LEFT)
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button = tkinter.Button(
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buttons, text="Quit", width=10, command=self.quit)
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button.pack(side=tkinter.constants.RIGHT)
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def get_keypath(self):
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keypath = tkinter.filedialog.asksaveasfilename(
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parent=None, title="Select B&N ePub key file to produce",
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defaultextension=".b64",
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filetypes=[('base64-encoded files', '.b64'),
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('All Files', '.*')])
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if keypath:
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keypath = os.path.normpath(keypath)
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self.keypath.delete(0, tkinter.constants.END)
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self.keypath.insert(0, keypath)
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return
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def generate(self):
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name = self.name.get()
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ccn = self.ccn.get()
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keypath = self.keypath.get()
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if not name:
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self.status['text'] = "Name not specified"
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return
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if not ccn:
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self.status['text'] = "Credit card number not specified"
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return
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if not keypath:
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self.status['text'] = "Output keyfile path not specified"
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return
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self.status['text'] = "Generating..."
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try:
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userkey = generate_key(name, ccn)
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except Exception as e:
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self.status['text'] = "Error: (0}".format(e.args[0])
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return
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open(keypath,'wb').write(userkey)
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self.status['text'] = "Keyfile successfully generated"
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root = tkinter.Tk()
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if AES is None:
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root.withdraw()
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tkinter.messagebox.showerror(
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"Ignoble EPUB Keyfile Generator",
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"This script requires OpenSSL or PyCrypto, which must be installed "
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"separately. Read the top-of-script comment for details.")
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return 1
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root.title("Barnes & Noble ePub Keyfile Generator v.{0}".format(__version__))
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root.resizable(True, False)
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root.minsize(300, 0)
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DecryptionDialog(root).pack(fill=tkinter.constants.X, expand=1)
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root.mainloop()
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return 0
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if __name__ == '__main__':
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if len(sys.argv) > 1:
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sys.exit(cli_main())
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sys.exit(gui_main())
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