Remove AlfCrypto libraries and perform everything in Python
The old AlfCrypto DLL, SO and DYLIB files are ancient, I don't have the systems to recompile them all, they cause issues on ARM Macs, and I doubt with all the Python improvements over the last years that they have a significant performance advantage. And even if that's the case, nobody is importing hundreds of DRM books at the same time so it shouldn't hurt if some decryptions might take a bit longer.
This commit is contained in:
NoDRM
parent
9276d77f63
commit
410e086d08
|
|
@ -187,15 +187,12 @@ class DeDRM(FileTypePlugin):
|
|||
os.mkdir(self.alfdir)
|
||||
# only continue if we've never run this version of the plugin before
|
||||
self.verdir = os.path.join(self.maindir,PLUGIN_VERSION)
|
||||
if not os.path.exists(self.verdir):
|
||||
if iswindows:
|
||||
names = ["alfcrypto.dll","alfcrypto64.dll"]
|
||||
elif isosx:
|
||||
names = ["libalfcrypto.dylib"]
|
||||
else:
|
||||
names = ["libalfcrypto32.so","libalfcrypto64.so","kindlekey.py","adobekey.py","subasyncio.py"]
|
||||
if not os.path.exists(self.verdir) and not iswindows and not isosx:
|
||||
|
||||
names = ["kindlekey.py","adobekey.py","ignoblekeyNookStudy.py"]
|
||||
|
||||
lib_dict = self.load_resources(names)
|
||||
print("{0} v{1}: Copying needed library files from plugin's zip".format(PLUGIN_NAME, PLUGIN_VERSION))
|
||||
print("{0} v{1}: Copying needed Python scripts from plugin's zip".format(PLUGIN_NAME, PLUGIN_VERSION))
|
||||
|
||||
for entry, data in lib_dict.items():
|
||||
file_path = os.path.join(self.alfdir, entry)
|
||||
|
|
|
|||
Binary file not shown.
|
|
@ -8,165 +8,12 @@
|
|||
# pbkdf2.py Copyright © 2009 Daniel Holth <dholth@fastmail.fm>
|
||||
# pbkdf2.py This code may be freely used and modified for any purpose.
|
||||
|
||||
import sys, os
|
||||
import hmac
|
||||
from struct import pack
|
||||
import hashlib
|
||||
import aescbc
|
||||
|
||||
# interface to needed routines libalfcrypto
|
||||
def _load_libalfcrypto():
|
||||
import ctypes
|
||||
from ctypes import CDLL, byref, POINTER, c_void_p, c_char_p, c_int, c_long, \
|
||||
Structure, c_ulong, create_string_buffer, addressof, string_at, cast, sizeof
|
||||
|
||||
pointer_size = ctypes.sizeof(ctypes.c_voidp)
|
||||
name_of_lib = None
|
||||
if sys.platform.startswith('darwin'):
|
||||
name_of_lib = 'libalfcrypto.dylib'
|
||||
elif sys.platform.startswith('win'):
|
||||
if pointer_size == 4:
|
||||
name_of_lib = 'alfcrypto.dll'
|
||||
else:
|
||||
name_of_lib = 'alfcrypto64.dll'
|
||||
else:
|
||||
if pointer_size == 4:
|
||||
name_of_lib = 'libalfcrypto32.so'
|
||||
else:
|
||||
name_of_lib = 'libalfcrypto64.so'
|
||||
|
||||
# hard code to local location for libalfcrypto
|
||||
libalfcrypto = os.path.join(sys.path[0],name_of_lib)
|
||||
if not os.path.isfile(libalfcrypto):
|
||||
libalfcrypto = os.path.join(sys.path[0], 'lib', name_of_lib)
|
||||
if not os.path.isfile(libalfcrypto):
|
||||
libalfcrypto = os.path.join('.',name_of_lib)
|
||||
if not os.path.isfile(libalfcrypto):
|
||||
raise Exception('libalfcrypto not found at %s' % libalfcrypto)
|
||||
|
||||
libalfcrypto = CDLL(libalfcrypto)
|
||||
|
||||
c_char_pp = POINTER(c_char_p)
|
||||
c_int_p = POINTER(c_int)
|
||||
|
||||
|
||||
def F(restype, name, argtypes):
|
||||
func = getattr(libalfcrypto, name)
|
||||
func.restype = restype
|
||||
func.argtypes = argtypes
|
||||
return func
|
||||
|
||||
# aes cbc decryption
|
||||
#
|
||||
# struct aes_key_st {
|
||||
# unsigned long rd_key[4 *(AES_MAXNR + 1)];
|
||||
# int rounds;
|
||||
# };
|
||||
#
|
||||
# typedef struct aes_key_st AES_KEY;
|
||||
#
|
||||
# int AES_set_decrypt_key(const unsigned char *userKey, const int bits, AES_KEY *key);
|
||||
#
|
||||
#
|
||||
# void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
||||
# const unsigned long length, const AES_KEY *key,
|
||||
# unsigned char *ivec, const int enc);
|
||||
|
||||
AES_MAXNR = 14
|
||||
|
||||
class AES_KEY(Structure):
|
||||
_fields_ = [('rd_key', c_long * (4 * (AES_MAXNR + 1))), ('rounds', c_int)]
|
||||
|
||||
AES_KEY_p = POINTER(AES_KEY)
|
||||
AES_cbc_encrypt = F(None, 'AES_cbc_encrypt',[c_char_p, c_char_p, c_ulong, AES_KEY_p, c_char_p, c_int])
|
||||
AES_set_decrypt_key = F(c_int, 'AES_set_decrypt_key',[c_char_p, c_int, AES_KEY_p])
|
||||
|
||||
|
||||
|
||||
# Pukall 1 Cipher
|
||||
# unsigned char *PC1(const unsigned char *key, unsigned int klen, const unsigned char *src,
|
||||
# unsigned char *dest, unsigned int len, int decryption);
|
||||
|
||||
PC1 = F(c_char_p, 'PC1', [c_char_p, c_ulong, c_char_p, c_char_p, c_ulong, c_ulong])
|
||||
|
||||
# Topaz Encryption
|
||||
# typedef struct _TpzCtx {
|
||||
# unsigned int v[2];
|
||||
# } TpzCtx;
|
||||
#
|
||||
# void topazCryptoInit(TpzCtx *ctx, const unsigned char *key, int klen);
|
||||
# void topazCryptoDecrypt(const TpzCtx *ctx, const unsigned char *in, unsigned char *out, int len);
|
||||
|
||||
class TPZ_CTX(Structure):
|
||||
_fields_ = [('v', c_long * 2)]
|
||||
|
||||
TPZ_CTX_p = POINTER(TPZ_CTX)
|
||||
topazCryptoInit = F(None, 'topazCryptoInit', [TPZ_CTX_p, c_char_p, c_ulong])
|
||||
topazCryptoDecrypt = F(None, 'topazCryptoDecrypt', [TPZ_CTX_p, c_char_p, c_char_p, c_ulong])
|
||||
|
||||
|
||||
class AES_CBC(object):
|
||||
def __init__(self):
|
||||
self._blocksize = 0
|
||||
self._keyctx = None
|
||||
self._iv = 0
|
||||
|
||||
def set_decrypt_key(self, userkey, iv):
|
||||
self._blocksize = len(userkey)
|
||||
if (self._blocksize != 16) and (self._blocksize != 24) and (self._blocksize != 32) :
|
||||
raise Exception('AES CBC improper key used')
|
||||
return
|
||||
keyctx = self._keyctx = AES_KEY()
|
||||
self._iv = iv
|
||||
rv = AES_set_decrypt_key(userkey, len(userkey) * 8, keyctx)
|
||||
if rv < 0:
|
||||
raise Exception('Failed to initialize AES CBC key')
|
||||
|
||||
def decrypt(self, data):
|
||||
out = create_string_buffer(len(data))
|
||||
mutable_iv = create_string_buffer(self._iv, len(self._iv))
|
||||
rv = AES_cbc_encrypt(data, out, len(data), self._keyctx, mutable_iv, 0)
|
||||
if rv == 0:
|
||||
raise Exception('AES CBC decryption failed')
|
||||
return out.raw
|
||||
|
||||
class Pukall_Cipher(object):
|
||||
def __init__(self):
|
||||
self.key = None
|
||||
|
||||
def PC1(self, key, src, decryption=True):
|
||||
self.key = key
|
||||
out = create_string_buffer(len(src))
|
||||
de = 0
|
||||
if decryption:
|
||||
de = 1
|
||||
rv = PC1(key, len(key), src, out, len(src), de)
|
||||
return out.raw
|
||||
|
||||
class Topaz_Cipher(object):
|
||||
def __init__(self):
|
||||
self._ctx = None
|
||||
|
||||
def ctx_init(self, key):
|
||||
tpz_ctx = self._ctx = TPZ_CTX()
|
||||
topazCryptoInit(tpz_ctx, key, len(key))
|
||||
return tpz_ctx
|
||||
|
||||
def decrypt(self, data, ctx=None):
|
||||
if ctx == None:
|
||||
ctx = self._ctx
|
||||
out = create_string_buffer(len(data))
|
||||
topazCryptoDecrypt(ctx, data, out, len(data))
|
||||
return out.raw
|
||||
|
||||
print("Using Library AlfCrypto DLL/DYLIB/SO")
|
||||
return (AES_CBC, Pukall_Cipher, Topaz_Cipher)
|
||||
|
||||
|
||||
def _load_python_alfcrypto():
|
||||
|
||||
import aescbc
|
||||
|
||||
class Pukall_Cipher(object):
|
||||
class Pukall_Cipher(object):
|
||||
def __init__(self):
|
||||
self.key = None
|
||||
|
||||
|
|
@ -175,11 +22,11 @@ def _load_python_alfcrypto():
|
|||
sum2 = 0;
|
||||
keyXorVal = 0;
|
||||
if len(key)!=16:
|
||||
raise Exception('Pukall_Cipher: Bad key length.')
|
||||
raise Exception("PC1: Bad key length")
|
||||
wkey = []
|
||||
for i in range(8):
|
||||
wkey.append(ord(key[i*2])<<8 | ord(key[i*2+1]))
|
||||
dst = ""
|
||||
wkey.append(key[i*2]<<8 | key[i*2+1])
|
||||
dst = bytearray(len(src))
|
||||
for i in range(len(src)):
|
||||
temp1 = 0;
|
||||
byteXorVal = 0;
|
||||
|
|
@ -190,7 +37,7 @@ def _load_python_alfcrypto():
|
|||
sum2 = (sum2+sum1)&0xFFFF
|
||||
temp1 = (temp1*20021+1)&0xFFFF
|
||||
byteXorVal ^= temp1 ^ sum2
|
||||
curByte = ord(src[i])
|
||||
curByte = src[i]
|
||||
if not decryption:
|
||||
keyXorVal = curByte * 257;
|
||||
curByte = ((curByte ^ (byteXorVal >> 8)) ^ byteXorVal) & 0xFF
|
||||
|
|
@ -198,10 +45,10 @@ def _load_python_alfcrypto():
|
|||
keyXorVal = curByte * 257;
|
||||
for j in range(8):
|
||||
wkey[j] ^= keyXorVal;
|
||||
dst+=chr(curByte)
|
||||
return dst
|
||||
dst[i] = curByte
|
||||
return bytes(dst)
|
||||
|
||||
class Topaz_Cipher(object):
|
||||
class Topaz_Cipher(object):
|
||||
def __init__(self):
|
||||
self._ctx = None
|
||||
|
||||
|
|
@ -230,7 +77,7 @@ def _load_python_alfcrypto():
|
|||
plainText += chr(m)
|
||||
return plainText
|
||||
|
||||
class AES_CBC(object):
|
||||
class AES_CBC(object):
|
||||
def __init__(self):
|
||||
self._key = None
|
||||
self._iv = None
|
||||
|
|
@ -246,23 +93,6 @@ def _load_python_alfcrypto():
|
|||
cleartext = self.aes.decrypt(iv + data)
|
||||
return cleartext
|
||||
|
||||
print("Using Library AlfCrypto Python")
|
||||
return (AES_CBC, Pukall_Cipher, Topaz_Cipher)
|
||||
|
||||
|
||||
def _load_crypto():
|
||||
AES_CBC = Pukall_Cipher = Topaz_Cipher = None
|
||||
cryptolist = (_load_libalfcrypto, _load_python_alfcrypto)
|
||||
for loader in cryptolist:
|
||||
try:
|
||||
AES_CBC, Pukall_Cipher, Topaz_Cipher = loader()
|
||||
break
|
||||
except (ImportError, Exception):
|
||||
pass
|
||||
return AES_CBC, Pukall_Cipher, Topaz_Cipher
|
||||
|
||||
AES_CBC, Pukall_Cipher, Topaz_Cipher = _load_crypto()
|
||||
|
||||
|
||||
class KeyIVGen(object):
|
||||
# this only exists in openssl so we will use pure python implementation instead
|
||||
|
|
|
|||
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
|
@ -80,10 +80,7 @@ import sys
|
|||
import os
|
||||
import struct
|
||||
import binascii
|
||||
try:
|
||||
from alfcrypto import Pukall_Cipher
|
||||
except:
|
||||
print("AlfCrypto not found. Using python PC1 implementation.")
|
||||
from alfcrypto import Pukall_Cipher
|
||||
|
||||
from utilities import SafeUnbuffered
|
||||
|
||||
|
|
@ -140,41 +137,8 @@ def PC1(key, src, decryption=True):
|
|||
# if we can get it from alfcrypto, use that
|
||||
try:
|
||||
return Pukall_Cipher().PC1(key,src,decryption)
|
||||
except NameError:
|
||||
pass
|
||||
except TypeError:
|
||||
pass
|
||||
|
||||
# use slow python version, since Pukall_Cipher didn't load
|
||||
sum1 = 0;
|
||||
sum2 = 0;
|
||||
keyXorVal = 0;
|
||||
if len(key)!=16:
|
||||
DrmException ("PC1: Bad key length")
|
||||
wkey = []
|
||||
for i in range(8):
|
||||
wkey.append(key[i*2]<<8 | key[i*2+1])
|
||||
dst = bytearray(len(src))
|
||||
for i in range(len(src)):
|
||||
temp1 = 0;
|
||||
byteXorVal = 0;
|
||||
for j in range(8):
|
||||
temp1 ^= wkey[j]
|
||||
sum2 = (sum2+j)*20021 + sum1
|
||||
sum1 = (temp1*346)&0xFFFF
|
||||
sum2 = (sum2+sum1)&0xFFFF
|
||||
temp1 = (temp1*20021+1)&0xFFFF
|
||||
byteXorVal ^= temp1 ^ sum2
|
||||
curByte = src[i]
|
||||
if not decryption:
|
||||
keyXorVal = curByte * 257;
|
||||
curByte = ((curByte ^ (byteXorVal >> 8)) ^ byteXorVal) & 0xFF
|
||||
if decryption:
|
||||
keyXorVal = curByte * 257;
|
||||
for j in range(8):
|
||||
wkey[j] ^= keyXorVal;
|
||||
dst[i] = curByte
|
||||
return bytes(dst)
|
||||
except:
|
||||
raise
|
||||
|
||||
# accepts unicode returns unicode
|
||||
def checksumPid(s):
|
||||
|
|
@ -232,12 +196,7 @@ class MobiBook:
|
|||
pass
|
||||
|
||||
def __init__(self, infile):
|
||||
print("MobiDeDrm v{0:s}.\nCopyright © 2008-2020 The Dark Reverser, Apprentice Harper et al.".format(__version__))
|
||||
|
||||
try:
|
||||
from alfcrypto import Pukall_Cipher
|
||||
except:
|
||||
print("AlfCrypto not found. Using python PC1 implementation.")
|
||||
print("MobiDeDrm v{0:s}.\nCopyright © 2008-2022 The Dark Reverser, Apprentice Harper et al.".format(__version__))
|
||||
|
||||
# initial sanity check on file
|
||||
self.data_file = open(infile, 'rb').read()
|
||||
|
|
|
|||
|
|
@ -1,148 +0,0 @@
|
|||
#!/usr/bin/env python
|
||||
# vim:ts=4:sw=4:softtabstop=4:smarttab:expandtab
|
||||
|
||||
import os, sys
|
||||
import signal
|
||||
import threading
|
||||
import subprocess
|
||||
from subprocess import Popen, PIPE, STDOUT
|
||||
|
||||
# **heavily** chopped up and modfied version of asyncproc.py
|
||||
# to make it actually work on Windows as well as Mac/Linux
|
||||
# For the original see:
|
||||
# "http://www.lysator.liu.se/~bellman/download/"
|
||||
# author is "Thomas Bellman <bellman@lysator.liu.se>"
|
||||
# available under GPL version 3 or Later
|
||||
|
||||
# create an asynchronous subprocess whose output can be collected in
|
||||
# a non-blocking manner
|
||||
|
||||
# What a mess! Have to use threads just to get non-blocking io
|
||||
# in a cross-platform manner
|
||||
|
||||
# luckily all thread use is hidden within this class
|
||||
|
||||
class Process(object):
|
||||
def __init__(self, *params, **kwparams):
|
||||
if len(params) <= 3:
|
||||
kwparams.setdefault('stdin', subprocess.PIPE)
|
||||
if len(params) <= 4:
|
||||
kwparams.setdefault('stdout', subprocess.PIPE)
|
||||
if len(params) <= 5:
|
||||
kwparams.setdefault('stderr', subprocess.PIPE)
|
||||
self.__pending_input = []
|
||||
self.__collected_outdata = []
|
||||
self.__collected_errdata = []
|
||||
self.__exitstatus = None
|
||||
self.__lock = threading.Lock()
|
||||
self.__inputsem = threading.Semaphore(0)
|
||||
self.__quit = False
|
||||
|
||||
self.__process = subprocess.Popen(*params, **kwparams)
|
||||
|
||||
if self.__process.stdin:
|
||||
self.__stdin_thread = threading.Thread(
|
||||
name="stdin-thread",
|
||||
target=self.__feeder, args=(self.__pending_input,
|
||||
self.__process.stdin))
|
||||
self.__stdin_thread.setDaemon(True)
|
||||
self.__stdin_thread.start()
|
||||
|
||||
if self.__process.stdout:
|
||||
self.__stdout_thread = threading.Thread(
|
||||
name="stdout-thread",
|
||||
target=self.__reader, args=(self.__collected_outdata,
|
||||
self.__process.stdout))
|
||||
self.__stdout_thread.setDaemon(True)
|
||||
self.__stdout_thread.start()
|
||||
|
||||
if self.__process.stderr:
|
||||
self.__stderr_thread = threading.Thread(
|
||||
name="stderr-thread",
|
||||
target=self.__reader, args=(self.__collected_errdata,
|
||||
self.__process.stderr))
|
||||
self.__stderr_thread.setDaemon(True)
|
||||
self.__stderr_thread.start()
|
||||
|
||||
def pid(self):
|
||||
return self.__process.pid
|
||||
|
||||
def kill(self, signal):
|
||||
self.__process.send_signal(signal)
|
||||
|
||||
# check on subprocess (pass in 'nowait') to act like poll
|
||||
def wait(self, flag):
|
||||
if flag.lower() == 'nowait':
|
||||
rc = self.__process.poll()
|
||||
else:
|
||||
rc = self.__process.wait()
|
||||
if rc != None:
|
||||
if self.__process.stdin:
|
||||
self.closeinput()
|
||||
if self.__process.stdout:
|
||||
self.__stdout_thread.join()
|
||||
if self.__process.stderr:
|
||||
self.__stderr_thread.join()
|
||||
return self.__process.returncode
|
||||
|
||||
def terminate(self):
|
||||
if self.__process.stdin:
|
||||
self.closeinput()
|
||||
self.__process.terminate()
|
||||
|
||||
# thread gets data from subprocess stdout
|
||||
def __reader(self, collector, source):
|
||||
while True:
|
||||
data = os.read(source.fileno(), 65536)
|
||||
self.__lock.acquire()
|
||||
collector.append(data)
|
||||
self.__lock.release()
|
||||
if data == "":
|
||||
source.close()
|
||||
break
|
||||
return
|
||||
|
||||
# thread feeds data to subprocess stdin
|
||||
def __feeder(self, pending, drain):
|
||||
while True:
|
||||
self.__inputsem.acquire()
|
||||
self.__lock.acquire()
|
||||
if not pending and self.__quit:
|
||||
drain.close()
|
||||
self.__lock.release()
|
||||
break
|
||||
data = pending.pop(0)
|
||||
self.__lock.release()
|
||||
drain.write(data)
|
||||
|
||||
# non-blocking read of data from subprocess stdout
|
||||
def read(self):
|
||||
self.__lock.acquire()
|
||||
outdata = "".join(self.__collected_outdata)
|
||||
del self.__collected_outdata[:]
|
||||
self.__lock.release()
|
||||
return outdata
|
||||
|
||||
# non-blocking read of data from subprocess stderr
|
||||
def readerr(self):
|
||||
self.__lock.acquire()
|
||||
errdata = "".join(self.__collected_errdata)
|
||||
del self.__collected_errdata[:]
|
||||
self.__lock.release()
|
||||
return errdata
|
||||
|
||||
# non-blocking write to stdin of subprocess
|
||||
def write(self, data):
|
||||
if self.__process.stdin is None:
|
||||
raise ValueError("Writing to process with stdin not a pipe")
|
||||
self.__lock.acquire()
|
||||
self.__pending_input.append(data)
|
||||
self.__inputsem.release()
|
||||
self.__lock.release()
|
||||
|
||||
# close stdinput of subprocess
|
||||
def closeinput(self):
|
||||
self.__lock.acquire()
|
||||
self.__quit = True
|
||||
self.__inputsem.release()
|
||||
self.__lock.release()
|
||||
Loading…
Reference in New Issue