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DeDRM_tools/DeDRM_calibre_plugin/DeDRM_plugin/kindlekey.py

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tools v6.0.8
2013-10-02 12:59:40 -06:00
#!/usr/bin/env python
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
# -*- coding: utf-8 -*-
tools v6.0.8
2013-10-02 12:59:40 -06:00
from __future__ import with_statement
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
tools v6.0.8
2013-10-02 12:59:40 -06:00
# kindlekey.py
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
# Copyright © 2010-2016 by some_updates, Apprentice Alf and Apprentice Harper
tools v6.0.8
2013-10-02 12:59:40 -06:00
# Revision history:
# 1.0 - Kindle info file decryption, extracted from k4mobidedrm, etc.
# 1.1 - Added Tkinter to match adobekey.py
# 1.2 - Fixed testing of successful retrieval on Mac
# 1.3 - Added getkey interface for Windows DeDRM application
# Simplified some of the Kindle for Mac code.
# 1.4 - Remove dependency on alfcrypto
# 1.5 - moved unicode_argv call inside main for Windows DeDRM compatibility
# 1.6 - Fixed a problem getting the disk serial numbers
# 1.7 - Work if TkInter is missing
# 1.8 - Fixes for Kindle for Mac, and non-ascii in Windows user names
# 1.9 - Fixes for Unicode in Windows user names
Fix for Kindle problem in Mac app and non-ascii username problem in Windows (plugin and app).
2015-03-25 01:26:33 -06:00
# 2.0 - Added comments and extra fix for non-ascii Windows user names
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
# 2.1 - Fixed Kindle for PC encryption changes March 2016
# 2.2 - Fixes for Macs with bonded ethernet ports
# Also removed old .kinfo file support (pre-2011)
tools v6.0.8
2013-10-02 12:59:40 -06:00
"""
Retrieve Kindle for PC/Mac user key.
"""
__license__ = 'GPL v3'
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
__version__ = '2.2'
tools v6.0.8
2013-10-02 12:59:40 -06:00
import sys, os, re
from struct import pack, unpack, unpack_from
import json
import getopt
# Routines common to Mac and PC
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
# Wrap a stream so that output gets flushed immediately
# and also make sure that any unicode strings get
# encoded using "replace" before writing them.
class SafeUnbuffered:
def __init__(self, stream):
self.stream = stream
self.encoding = stream.encoding
if self.encoding == None:
self.encoding = "utf-8"
def write(self, data):
if isinstance(data,unicode):
data = data.encode(self.encoding,"replace")
self.stream.write(data)
self.stream.flush()
def __getattr__(self, attr):
return getattr(self.stream, attr)
tools v6.0.8
2013-10-02 12:59:40 -06:00
try:
from calibre.constants import iswindows, isosx
except:
iswindows = sys.platform.startswith('win')
isosx = sys.platform.startswith('darwin')
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
def unicode_argv():
if iswindows:
# Uses shell32.GetCommandLineArgvW to get sys.argv as a list of Unicode
# strings.
# Versions 2.x of Python don't support Unicode in sys.argv on
# Windows, with the underlying Windows API instead replacing multi-byte
tools v6.0.8
2013-10-02 12:59:40 -06:00
# characters with '?'. So use shell32.GetCommandLineArgvW to get sys.argv
# as a list of Unicode strings and encode them as utf-8
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
from ctypes import POINTER, byref, cdll, c_int, windll
from ctypes.wintypes import LPCWSTR, LPWSTR
GetCommandLineW = cdll.kernel32.GetCommandLineW
GetCommandLineW.argtypes = []
GetCommandLineW.restype = LPCWSTR
CommandLineToArgvW = windll.shell32.CommandLineToArgvW
CommandLineToArgvW.argtypes = [LPCWSTR, POINTER(c_int)]
CommandLineToArgvW.restype = POINTER(LPWSTR)
cmd = GetCommandLineW()
argc = c_int(0)
argv = CommandLineToArgvW(cmd, byref(argc))
if argc.value > 0:
# Remove Python executable and commands if present
start = argc.value - len(sys.argv)
return [argv[i] for i in
xrange(start, argc.value)]
# if we don't have any arguments at all, just pass back script name
# this should never happen
tools v6.0.8
2013-10-02 12:59:40 -06:00
return [u"kindlekey.py"]
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
else:
argvencoding = sys.stdin.encoding
if argvencoding == None:
argvencoding = "utf-8"
return [arg if (type(arg) == unicode) else unicode(arg,argvencoding) for arg in sys.argv]
tools v6.0.8
2013-10-02 12:59:40 -06:00
class DrmException(Exception):
pass
# crypto digestroutines
import hashlib
def MD5(message):
ctx = hashlib.md5()
ctx.update(message)
return ctx.digest()
def SHA1(message):
ctx = hashlib.sha1()
ctx.update(message)
return ctx.digest()
def SHA256(message):
ctx = hashlib.sha256()
ctx.update(message)
return ctx.digest()
# For K4M/PC 1.6.X and later
# generate table of prime number less than or equal to int n
def primes(n):
if n==2: return [2]
elif n<2: return []
s=range(3,n+1,2)
mroot = n ** 0.5
half=(n+1)/2-1
i=0
m=3
while m <= mroot:
if s[i]:
j=(m*m-3)/2
s[j]=0
while j<half:
s[j]=0
j+=m
i=i+1
m=2*i+3
return [2]+[x for x in s if x]
# Encode the bytes in data with the characters in map
def encode(data, map):
result = ''
for char in data:
value = ord(char)
Q = (value ^ 0x80) // len(map)
R = value % len(map)
result += map[Q]
result += map[R]
return result
# Hash the bytes in data and then encode the digest with the characters in map
def encodeHash(data,map):
return encode(MD5(data),map)
# Decode the string in data with the characters in map. Returns the decoded bytes
def decode(data,map):
result = ''
for i in range (0,len(data)-1,2):
high = map.find(data[i])
low = map.find(data[i+1])
if (high == -1) or (low == -1) :
break
value = (((high * len(map)) ^ 0x80) & 0xFF) + low
result += pack('B',value)
return result
# Routines unique to Mac and PC
if iswindows:
from ctypes import windll, c_char_p, c_wchar_p, c_uint, POINTER, byref, \
create_unicode_buffer, create_string_buffer, CFUNCTYPE, addressof, \
string_at, Structure, c_void_p, cast
import _winreg as winreg
MAX_PATH = 255
kernel32 = windll.kernel32
advapi32 = windll.advapi32
crypt32 = windll.crypt32
try:
# try to get fast routines from alfcrypto
from alfcrypto import AES_CBC, KeyIVGen
except:
# alfcrypto not available, so use python implementations
"""
Routines for doing AES CBC in one file
Modified by some_updates to extract
and combine only those parts needed for AES CBC
into one simple to add python file
Original Version
Copyright (c) 2002 by Paul A. Lambert
Under:
CryptoPy Artisitic License Version 1.0
See the wonderful pure python package cryptopy-1.2.5
and read its LICENSE.txt for complete license details.
"""
class CryptoError(Exception):
""" Base class for crypto exceptions """
def __init__(self,errorMessage='Error!'):
self.message = errorMessage
def __str__(self):
return self.message
class InitCryptoError(CryptoError):
""" Crypto errors during algorithm initialization """
class BadKeySizeError(InitCryptoError):
""" Bad key size error """
class EncryptError(CryptoError):
""" Error in encryption processing """
class DecryptError(CryptoError):
""" Error in decryption processing """
class DecryptNotBlockAlignedError(DecryptError):
""" Error in decryption processing """
def xorS(a,b):
""" XOR two strings """
assert len(a)==len(b)
x = []
for i in range(len(a)):
x.append( chr(ord(a[i])^ord(b[i])))
return ''.join(x)
def xor(a,b):
""" XOR two strings """
x = []
for i in range(min(len(a),len(b))):
x.append( chr(ord(a[i])^ord(b[i])))
return ''.join(x)
"""
Base 'BlockCipher' and Pad classes for cipher instances.
BlockCipher supports automatic padding and type conversion. The BlockCipher
class was written to make the actual algorithm code more readable and
not for performance.
"""
class BlockCipher:
""" Block ciphers """
def __init__(self):
self.reset()
def reset(self):
self.resetEncrypt()
self.resetDecrypt()
def resetEncrypt(self):
self.encryptBlockCount = 0
self.bytesToEncrypt = ''
def resetDecrypt(self):
self.decryptBlockCount = 0
self.bytesToDecrypt = ''
def encrypt(self, plainText, more = None):
""" Encrypt a string and return a binary string """
self.bytesToEncrypt += plainText # append plainText to any bytes from prior encrypt
numBlocks, numExtraBytes = divmod(len(self.bytesToEncrypt), self.blockSize)
cipherText = ''
for i in range(numBlocks):
bStart = i*self.blockSize
ctBlock = self.encryptBlock(self.bytesToEncrypt[bStart:bStart+self.blockSize])
self.encryptBlockCount += 1
cipherText += ctBlock
if numExtraBytes > 0: # save any bytes that are not block aligned
self.bytesToEncrypt = self.bytesToEncrypt[-numExtraBytes:]
else:
self.bytesToEncrypt = ''
if more == None: # no more data expected from caller
finalBytes = self.padding.addPad(self.bytesToEncrypt,self.blockSize)
if len(finalBytes) > 0:
ctBlock = self.encryptBlock(finalBytes)
self.encryptBlockCount += 1
cipherText += ctBlock
self.resetEncrypt()
return cipherText
def decrypt(self, cipherText, more = None):
""" Decrypt a string and return a string """
self.bytesToDecrypt += cipherText # append to any bytes from prior decrypt
numBlocks, numExtraBytes = divmod(len(self.bytesToDecrypt), self.blockSize)
if more == None: # no more calls to decrypt, should have all the data
if numExtraBytes != 0:
raise DecryptNotBlockAlignedError, 'Data not block aligned on decrypt'
# hold back some bytes in case last decrypt has zero len
if (more != None) and (numExtraBytes == 0) and (numBlocks >0) :
numBlocks -= 1
numExtraBytes = self.blockSize
plainText = ''
for i in range(numBlocks):
bStart = i*self.blockSize
ptBlock = self.decryptBlock(self.bytesToDecrypt[bStart : bStart+self.blockSize])
self.decryptBlockCount += 1
plainText += ptBlock
if numExtraBytes > 0: # save any bytes that are not block aligned
self.bytesToEncrypt = self.bytesToEncrypt[-numExtraBytes:]
else:
self.bytesToEncrypt = ''
if more == None: # last decrypt remove padding
plainText = self.padding.removePad(plainText, self.blockSize)
self.resetDecrypt()
return plainText
class Pad:
def __init__(self):
pass # eventually could put in calculation of min and max size extension
class padWithPadLen(Pad):
""" Pad a binary string with the length of the padding """
def addPad(self, extraBytes, blockSize):
""" Add padding to a binary string to make it an even multiple
of the block size """
blocks, numExtraBytes = divmod(len(extraBytes), blockSize)
padLength = blockSize - numExtraBytes
return extraBytes + padLength*chr(padLength)
def removePad(self, paddedBinaryString, blockSize):
""" Remove padding from a binary string """
if not(0<len(paddedBinaryString)):
raise DecryptNotBlockAlignedError, 'Expected More Data'
return paddedBinaryString[:-ord(paddedBinaryString[-1])]
class noPadding(Pad):
""" No padding. Use this to get ECB behavior from encrypt/decrypt """
def addPad(self, extraBytes, blockSize):
""" Add no padding """
return extraBytes
def removePad(self, paddedBinaryString, blockSize):
""" Remove no padding """
return paddedBinaryString
"""
Rijndael encryption algorithm
This byte oriented implementation is intended to closely
match FIPS specification for readability. It is not implemented
for performance.
"""
class Rijndael(BlockCipher):
""" Rijndael encryption algorithm """
def __init__(self, key = None, padding = padWithPadLen(), keySize=16, blockSize=16 ):
self.name = 'RIJNDAEL'
self.keySize = keySize
self.strength = keySize*8
self.blockSize = blockSize # blockSize is in bytes
self.padding = padding # change default to noPadding() to get normal ECB behavior
assert( keySize%4==0 and NrTable[4].has_key(keySize/4)),'key size must be 16,20,24,29 or 32 bytes'
assert( blockSize%4==0 and NrTable.has_key(blockSize/4)), 'block size must be 16,20,24,29 or 32 bytes'
self.Nb = self.blockSize/4 # Nb is number of columns of 32 bit words
self.Nk = keySize/4 # Nk is the key length in 32-bit words
self.Nr = NrTable[self.Nb][self.Nk] # The number of rounds (Nr) is a function of
# the block (Nb) and key (Nk) sizes.
if key != None:
self.setKey(key)
def setKey(self, key):
""" Set a key and generate the expanded key """
assert( len(key) == (self.Nk*4) ), 'Key length must be same as keySize parameter'
self.__expandedKey = keyExpansion(self, key)
self.reset() # BlockCipher.reset()
def encryptBlock(self, plainTextBlock):
""" Encrypt a block, plainTextBlock must be a array of bytes [Nb by 4] """
self.state = self._toBlock(plainTextBlock)
AddRoundKey(self, self.__expandedKey[0:self.Nb])
for round in range(1,self.Nr): #for round = 1 step 1 to Nr
SubBytes(self)
ShiftRows(self)
MixColumns(self)
AddRoundKey(self, self.__expandedKey[round*self.Nb:(round+1)*self.Nb])
SubBytes(self)
ShiftRows(self)
AddRoundKey(self, self.__expandedKey[self.Nr*self.Nb:(self.Nr+1)*self.Nb])
return self._toBString(self.state)
def decryptBlock(self, encryptedBlock):
""" decrypt a block (array of bytes) """
self.state = self._toBlock(encryptedBlock)
AddRoundKey(self, self.__expandedKey[self.Nr*self.Nb:(self.Nr+1)*self.Nb])
for round in range(self.Nr-1,0,-1):
InvShiftRows(self)
InvSubBytes(self)
AddRoundKey(self, self.__expandedKey[round*self.Nb:(round+1)*self.Nb])
InvMixColumns(self)
InvShiftRows(self)
InvSubBytes(self)
AddRoundKey(self, self.__expandedKey[0:self.Nb])
return self._toBString(self.state)
def _toBlock(self, bs):
""" Convert binary string to array of bytes, state[col][row]"""
assert ( len(bs) == 4*self.Nb ), 'Rijndarl blocks must be of size blockSize'
return [[ord(bs[4*i]),ord(bs[4*i+1]),ord(bs[4*i+2]),ord(bs[4*i+3])] for i in range(self.Nb)]
def _toBString(self, block):
""" Convert block (array of bytes) to binary string """
l = []
for col in block:
for rowElement in col:
l.append(chr(rowElement))
return ''.join(l)
#-------------------------------------
""" Number of rounds Nr = NrTable[Nb][Nk]
Nb Nk=4 Nk=5 Nk=6 Nk=7 Nk=8
------------------------------------- """
NrTable = {4: {4:10, 5:11, 6:12, 7:13, 8:14},
5: {4:11, 5:11, 6:12, 7:13, 8:14},
6: {4:12, 5:12, 6:12, 7:13, 8:14},
7: {4:13, 5:13, 6:13, 7:13, 8:14},
8: {4:14, 5:14, 6:14, 7:14, 8:14}}
#-------------------------------------
def keyExpansion(algInstance, keyString):
""" Expand a string of size keySize into a larger array """
Nk, Nb, Nr = algInstance.Nk, algInstance.Nb, algInstance.Nr # for readability
key = [ord(byte) for byte in keyString] # convert string to list
w = [[key[4*i],key[4*i+1],key[4*i+2],key[4*i+3]] for i in range(Nk)]
for i in range(Nk,Nb*(Nr+1)):
temp = w[i-1] # a four byte column
if (i%Nk) == 0 :
temp = temp[1:]+[temp[0]] # RotWord(temp)
temp = [ Sbox[byte] for byte in temp ]
temp[0] ^= Rcon[i/Nk]
elif Nk > 6 and i%Nk == 4 :
temp = [ Sbox[byte] for byte in temp ] # SubWord(temp)
w.append( [ w[i-Nk][byte]^temp[byte] for byte in range(4) ] )
return w
Rcon = (0,0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x1b,0x36, # note extra '0' !!!
0x6c,0xd8,0xab,0x4d,0x9a,0x2f,0x5e,0xbc,0x63,0xc6,
0x97,0x35,0x6a,0xd4,0xb3,0x7d,0xfa,0xef,0xc5,0x91)
#-------------------------------------
def AddRoundKey(algInstance, keyBlock):
""" XOR the algorithm state with a block of key material """
for column in range(algInstance.Nb):
for row in range(4):
algInstance.state[column][row] ^= keyBlock[column][row]
#-------------------------------------
def SubBytes(algInstance):
for column in range(algInstance.Nb):
for row in range(4):
algInstance.state[column][row] = Sbox[algInstance.state[column][row]]
def InvSubBytes(algInstance):
for column in range(algInstance.Nb):
for row in range(4):
algInstance.state[column][row] = InvSbox[algInstance.state[column][row]]
Sbox = (0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,
0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,
0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,
0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,
0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,
0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,
0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,
0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,
0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,
0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,
0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,
0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,
0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,
0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,
0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,
0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,
0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16)
InvSbox = (0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,
0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb,
0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,
0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb,
0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,
0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e,
0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,
0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25,
0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,
0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92,
0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,
0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84,
0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,
0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06,
0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,
0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b,
0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,
0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73,
0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,
0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e,
0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,
0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b,
0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,
0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4,
0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,
0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f,
0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,
0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef,
0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,
0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61,
0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,
0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d)
#-------------------------------------
""" For each block size (Nb), the ShiftRow operation shifts row i
by the amount Ci. Note that row 0 is not shifted.
Nb C1 C2 C3
------------------- """
shiftOffset = { 4 : ( 0, 1, 2, 3),
5 : ( 0, 1, 2, 3),
6 : ( 0, 1, 2, 3),
7 : ( 0, 1, 2, 4),
8 : ( 0, 1, 3, 4) }
def ShiftRows(algInstance):
tmp = [0]*algInstance.Nb # list of size Nb
for r in range(1,4): # row 0 reamains unchanged and can be skipped
for c in range(algInstance.Nb):
tmp[c] = algInstance.state[(c+shiftOffset[algInstance.Nb][r]) % algInstance.Nb][r]
for c in range(algInstance.Nb):
algInstance.state[c][r] = tmp[c]
def InvShiftRows(algInstance):
tmp = [0]*algInstance.Nb # list of size Nb
for r in range(1,4): # row 0 reamains unchanged and can be skipped
for c in range(algInstance.Nb):
tmp[c] = algInstance.state[(c+algInstance.Nb-shiftOffset[algInstance.Nb][r]) % algInstance.Nb][r]
for c in range(algInstance.Nb):
algInstance.state[c][r] = tmp[c]
#-------------------------------------
def MixColumns(a):
Sprime = [0,0,0,0]
for j in range(a.Nb): # for each column
Sprime[0] = mul(2,a.state[j][0])^mul(3,a.state[j][1])^mul(1,a.state[j][2])^mul(1,a.state[j][3])
Sprime[1] = mul(1,a.state[j][0])^mul(2,a.state[j][1])^mul(3,a.state[j][2])^mul(1,a.state[j][3])
Sprime[2] = mul(1,a.state[j][0])^mul(1,a.state[j][1])^mul(2,a.state[j][2])^mul(3,a.state[j][3])
Sprime[3] = mul(3,a.state[j][0])^mul(1,a.state[j][1])^mul(1,a.state[j][2])^mul(2,a.state[j][3])
for i in range(4):
a.state[j][i] = Sprime[i]
def InvMixColumns(a):
""" Mix the four bytes of every column in a linear way
This is the opposite operation of Mixcolumn """
Sprime = [0,0,0,0]
for j in range(a.Nb): # for each column
Sprime[0] = mul(0x0E,a.state[j][0])^mul(0x0B,a.state[j][1])^mul(0x0D,a.state[j][2])^mul(0x09,a.state[j][3])
Sprime[1] = mul(0x09,a.state[j][0])^mul(0x0E,a.state[j][1])^mul(0x0B,a.state[j][2])^mul(0x0D,a.state[j][3])
Sprime[2] = mul(0x0D,a.state[j][0])^mul(0x09,a.state[j][1])^mul(0x0E,a.state[j][2])^mul(0x0B,a.state[j][3])
Sprime[3] = mul(0x0B,a.state[j][0])^mul(0x0D,a.state[j][1])^mul(0x09,a.state[j][2])^mul(0x0E,a.state[j][3])
for i in range(4):
a.state[j][i] = Sprime[i]
#-------------------------------------
def mul(a, b):
""" Multiply two elements of GF(2^m)
needed for MixColumn and InvMixColumn """
if (a !=0 and b!=0):
return Alogtable[(Logtable[a] + Logtable[b])%255]
else:
return 0
Logtable = ( 0, 0, 25, 1, 50, 2, 26, 198, 75, 199, 27, 104, 51, 238, 223, 3,
100, 4, 224, 14, 52, 141, 129, 239, 76, 113, 8, 200, 248, 105, 28, 193,
125, 194, 29, 181, 249, 185, 39, 106, 77, 228, 166, 114, 154, 201, 9, 120,
101, 47, 138, 5, 33, 15, 225, 36, 18, 240, 130, 69, 53, 147, 218, 142,
150, 143, 219, 189, 54, 208, 206, 148, 19, 92, 210, 241, 64, 70, 131, 56,
102, 221, 253, 48, 191, 6, 139, 98, 179, 37, 226, 152, 34, 136, 145, 16,
126, 110, 72, 195, 163, 182, 30, 66, 58, 107, 40, 84, 250, 133, 61, 186,
43, 121, 10, 21, 155, 159, 94, 202, 78, 212, 172, 229, 243, 115, 167, 87,
175, 88, 168, 80, 244, 234, 214, 116, 79, 174, 233, 213, 231, 230, 173, 232,
44, 215, 117, 122, 235, 22, 11, 245, 89, 203, 95, 176, 156, 169, 81, 160,
127, 12, 246, 111, 23, 196, 73, 236, 216, 67, 31, 45, 164, 118, 123, 183,
204, 187, 62, 90, 251, 96, 177, 134, 59, 82, 161, 108, 170, 85, 41, 157,
151, 178, 135, 144, 97, 190, 220, 252, 188, 149, 207, 205, 55, 63, 91, 209,
83, 57, 132, 60, 65, 162, 109, 71, 20, 42, 158, 93, 86, 242, 211, 171,
68, 17, 146, 217, 35, 32, 46, 137, 180, 124, 184, 38, 119, 153, 227, 165,
103, 74, 237, 222, 197, 49, 254, 24, 13, 99, 140, 128, 192, 247, 112, 7)
Alogtable= ( 1, 3, 5, 15, 17, 51, 85, 255, 26, 46, 114, 150, 161, 248, 19, 53,
95, 225, 56, 72, 216, 115, 149, 164, 247, 2, 6, 10, 30, 34, 102, 170,
229, 52, 92, 228, 55, 89, 235, 38, 106, 190, 217, 112, 144, 171, 230, 49,
83, 245, 4, 12, 20, 60, 68, 204, 79, 209, 104, 184, 211, 110, 178, 205,
76, 212, 103, 169, 224, 59, 77, 215, 98, 166, 241, 8, 24, 40, 120, 136,
131, 158, 185, 208, 107, 189, 220, 127, 129, 152, 179, 206, 73, 219, 118, 154,
181, 196, 87, 249, 16, 48, 80, 240, 11, 29, 39, 105, 187, 214, 97, 163,
254, 25, 43, 125, 135, 146, 173, 236, 47, 113, 147, 174, 233, 32, 96, 160,
251, 22, 58, 78, 210, 109, 183, 194, 93, 231, 50, 86, 250, 21, 63, 65,
195, 94, 226, 61, 71, 201, 64, 192, 91, 237, 44, 116, 156, 191, 218, 117,
159, 186, 213, 100, 172, 239, 42, 126, 130, 157, 188, 223, 122, 142, 137, 128,
155, 182, 193, 88, 232, 35, 101, 175, 234, 37, 111, 177, 200, 67, 197, 84,
252, 31, 33, 99, 165, 244, 7, 9, 27, 45, 119, 153, 176, 203, 70, 202,
69, 207, 74, 222, 121, 139, 134, 145, 168, 227, 62, 66, 198, 81, 243, 14,
18, 54, 90, 238, 41, 123, 141, 140, 143, 138, 133, 148, 167, 242, 13, 23,
57, 75, 221, 124, 132, 151, 162, 253, 28, 36, 108, 180, 199, 82, 246, 1)
"""
AES Encryption Algorithm
The AES algorithm is just Rijndael algorithm restricted to the default
blockSize of 128 bits.
"""
class AES(Rijndael):
""" The AES algorithm is the Rijndael block cipher restricted to block
sizes of 128 bits and key sizes of 128, 192 or 256 bits
"""
def __init__(self, key = None, padding = padWithPadLen(), keySize=16):
""" Initialize AES, keySize is in bytes """
if not (keySize == 16 or keySize == 24 or keySize == 32) :
raise BadKeySizeError, 'Illegal AES key size, must be 16, 24, or 32 bytes'
Rijndael.__init__( self, key, padding=padding, keySize=keySize, blockSize=16 )
self.name = 'AES'
"""
CBC mode of encryption for block ciphers.
This algorithm mode wraps any BlockCipher to make a
Cipher Block Chaining mode.
"""
from random import Random # should change to crypto.random!!!
class CBC(BlockCipher):
""" The CBC class wraps block ciphers to make cipher block chaining (CBC) mode
algorithms. The initialization (IV) is automatic if set to None. Padding
is also automatic based on the Pad class used to initialize the algorithm
"""
def __init__(self, blockCipherInstance, padding = padWithPadLen()):
""" CBC algorithms are created by initializing with a BlockCipher instance """
self.baseCipher = blockCipherInstance
self.name = self.baseCipher.name + '_CBC'
self.blockSize = self.baseCipher.blockSize
self.keySize = self.baseCipher.keySize
self.padding = padding
self.baseCipher.padding = noPadding() # baseCipher should NOT pad!!
self.r = Random() # for IV generation, currently uses
# mediocre standard distro version <----------------
import time
newSeed = time.ctime()+str(self.r) # seed with instance location
self.r.seed(newSeed) # to make unique
self.reset()
def setKey(self, key):
self.baseCipher.setKey(key)
# Overload to reset both CBC state and the wrapped baseCipher
def resetEncrypt(self):
BlockCipher.resetEncrypt(self) # reset CBC encrypt state (super class)
self.baseCipher.resetEncrypt() # reset base cipher encrypt state
def resetDecrypt(self):
BlockCipher.resetDecrypt(self) # reset CBC state (super class)
self.baseCipher.resetDecrypt() # reset base cipher decrypt state
def encrypt(self, plainText, iv=None, more=None):
""" CBC encryption - overloads baseCipher to allow optional explicit IV
when iv=None, iv is auto generated!
"""
if self.encryptBlockCount == 0:
self.iv = iv
else:
assert(iv==None), 'IV used only on first call to encrypt'
return BlockCipher.encrypt(self,plainText, more=more)
def decrypt(self, cipherText, iv=None, more=None):
""" CBC decryption - overloads baseCipher to allow optional explicit IV
when iv=None, iv is auto generated!
"""
if self.decryptBlockCount == 0:
self.iv = iv
else:
assert(iv==None), 'IV used only on first call to decrypt'
return BlockCipher.decrypt(self, cipherText, more=more)
def encryptBlock(self, plainTextBlock):
""" CBC block encryption, IV is set with 'encrypt' """
auto_IV = ''
if self.encryptBlockCount == 0:
if self.iv == None:
# generate IV and use
self.iv = ''.join([chr(self.r.randrange(256)) for i in range(self.blockSize)])
self.prior_encr_CT_block = self.iv
auto_IV = self.prior_encr_CT_block # prepend IV if it's automatic
else: # application provided IV
assert(len(self.iv) == self.blockSize ),'IV must be same length as block'
self.prior_encr_CT_block = self.iv
""" encrypt the prior CT XORed with the PT """
ct = self.baseCipher.encryptBlock( xor(self.prior_encr_CT_block, plainTextBlock) )
self.prior_encr_CT_block = ct
return auto_IV+ct
def decryptBlock(self, encryptedBlock):
""" Decrypt a single block """
if self.decryptBlockCount == 0: # first call, process IV
if self.iv == None: # auto decrypt IV?
self.prior_CT_block = encryptedBlock
return ''
else:
assert(len(self.iv)==self.blockSize),"Bad IV size on CBC decryption"
self.prior_CT_block = self.iv
dct = self.baseCipher.decryptBlock(encryptedBlock)
""" XOR the prior decrypted CT with the prior CT """
dct_XOR_priorCT = xor( self.prior_CT_block, dct )
self.prior_CT_block = encryptedBlock
return dct_XOR_priorCT
"""
AES_CBC Encryption Algorithm
"""
class aescbc_AES_CBC(CBC):
""" AES encryption in CBC feedback mode """
def __init__(self, key=None, padding=padWithPadLen(), keySize=16):
CBC.__init__( self, AES(key, noPadding(), keySize), padding)
self.name = 'AES_CBC'
class AES_CBC(object):
def __init__(self):
self._key = None
self._iv = None
self.aes = None
def set_decrypt_key(self, userkey, iv):
self._key = userkey
self._iv = iv
self.aes = aescbc_AES_CBC(userkey, noPadding(), len(userkey))
def decrypt(self, data):
iv = self._iv
cleartext = self.aes.decrypt(iv + data)
return cleartext
import hmac
class KeyIVGen(object):
# this only exists in openssl so we will use pure python implementation instead
# PKCS5_PBKDF2_HMAC_SHA1 = F(c_int, 'PKCS5_PBKDF2_HMAC_SHA1',
# [c_char_p, c_ulong, c_char_p, c_ulong, c_ulong, c_ulong, c_char_p])
def pbkdf2(self, passwd, salt, iter, keylen):
def xorstr( a, b ):
if len(a) != len(b):
raise Exception("xorstr(): lengths differ")
return ''.join((chr(ord(x)^ord(y)) for x, y in zip(a, b)))
def prf( h, data ):
hm = h.copy()
hm.update( data )
return hm.digest()
def pbkdf2_F( h, salt, itercount, blocknum ):
U = prf( h, salt + pack('>i',blocknum ) )
T = U
for i in range(2, itercount+1):
U = prf( h, U )
T = xorstr( T, U )
return T
sha = hashlib.sha1
digest_size = sha().digest_size
# l - number of output blocks to produce
l = keylen / digest_size
if keylen % digest_size != 0:
l += 1
h = hmac.new( passwd, None, sha )
T = ""
for i in range(1, l+1):
T += pbkdf2_F( h, salt, iter, i )
return T[0: keylen]
def UnprotectHeaderData(encryptedData):
passwdData = 'header_key_data'
salt = 'HEADER.2011'
iter = 0x80
keylen = 0x100
key_iv = KeyIVGen().pbkdf2(passwdData, salt, iter, keylen)
key = key_iv[0:32]
iv = key_iv[32:48]
aes=AES_CBC()
aes.set_decrypt_key(key, iv)
cleartext = aes.decrypt(encryptedData)
return cleartext
# Various character maps used to decrypt kindle info values.
# Probably supposed to act as obfuscation
charMap2 = "AaZzB0bYyCc1XxDdW2wEeVv3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_"
charMap5 = "AzB0bYyCeVvaZ3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_c1XxDdW2wE"
# New maps in K4PC 1.9.0
testMap1 = "n5Pr6St7Uv8Wx9YzAb0Cd1Ef2Gh3Jk4M"
testMap6 = "9YzAb0Cd1Ef2n5Pr6St7Uvh3Jk4M8WxG"
testMap8 = "YvaZ3FfUm9Nn_c1XuG4yCAzB0beVg-TtHh5SsIiR6rJjQdW2wEq7KkPpL8lOoMxD"
# interface with Windows OS Routines
class DataBlob(Structure):
_fields_ = [('cbData', c_uint),
('pbData', c_void_p)]
DataBlob_p = POINTER(DataBlob)
def GetSystemDirectory():
GetSystemDirectoryW = kernel32.GetSystemDirectoryW
GetSystemDirectoryW.argtypes = [c_wchar_p, c_uint]
GetSystemDirectoryW.restype = c_uint
def GetSystemDirectory():
buffer = create_unicode_buffer(MAX_PATH + 1)
GetSystemDirectoryW(buffer, len(buffer))
return buffer.value
return GetSystemDirectory
GetSystemDirectory = GetSystemDirectory()
def GetVolumeSerialNumber():
GetVolumeInformationW = kernel32.GetVolumeInformationW
GetVolumeInformationW.argtypes = [c_wchar_p, c_wchar_p, c_uint,
POINTER(c_uint), POINTER(c_uint),
POINTER(c_uint), c_wchar_p, c_uint]
GetVolumeInformationW.restype = c_uint
def GetVolumeSerialNumber(path = GetSystemDirectory().split('\\')[0] + '\\'):
vsn = c_uint(0)
GetVolumeInformationW(path, None, 0, byref(vsn), None, None, None, 0)
return str(vsn.value)
return GetVolumeSerialNumber
GetVolumeSerialNumber = GetVolumeSerialNumber()
def GetIDString():
vsn = GetVolumeSerialNumber()
#print('Using Volume Serial Number for ID: '+vsn)
return vsn
def getLastError():
GetLastError = kernel32.GetLastError
GetLastError.argtypes = None
GetLastError.restype = c_uint
def getLastError():
return GetLastError()
return getLastError
getLastError = getLastError()
def GetUserName():
GetUserNameW = advapi32.GetUserNameW
GetUserNameW.argtypes = [c_wchar_p, POINTER(c_uint)]
GetUserNameW.restype = c_uint
def GetUserName():
buffer = create_unicode_buffer(2)
size = c_uint(len(buffer))
while not GetUserNameW(buffer, byref(size)):
errcd = getLastError()
if errcd == 234:
# bad wine implementation up through wine 1.3.21
return "AlternateUserName"
buffer = create_unicode_buffer(len(buffer) * 2)
size.value = len(buffer)
Fix for Kindle problem in Mac app and non-ascii username problem in Windows (plugin and app).
2015-03-25 01:26:33 -06:00
# return low byte of the unicode value of each character of the username
tools v6.0.8
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return buffer.value.encode('utf-16-le')[::2]
return GetUserName
GetUserName = GetUserName()
def CryptUnprotectData():
_CryptUnprotectData = crypt32.CryptUnprotectData
_CryptUnprotectData.argtypes = [DataBlob_p, c_wchar_p, DataBlob_p,
c_void_p, c_void_p, c_uint, DataBlob_p]
_CryptUnprotectData.restype = c_uint
def CryptUnprotectData(indata, entropy, flags):
indatab = create_string_buffer(indata)
indata = DataBlob(len(indata), cast(indatab, c_void_p))
entropyb = create_string_buffer(entropy)
entropy = DataBlob(len(entropy), cast(entropyb, c_void_p))
outdata = DataBlob()
if not _CryptUnprotectData(byref(indata), None, byref(entropy),
None, None, flags, byref(outdata)):
# raise DrmException("Failed to Unprotect Data")
return 'failed'
return string_at(outdata.pbData, outdata.cbData)
return CryptUnprotectData
CryptUnprotectData = CryptUnprotectData()
# Returns Environmental Variables that contain unicode
def getEnvironmentVariable(name):
import ctypes
name = unicode(name) # make sure string argument is unicode
n = ctypes.windll.kernel32.GetEnvironmentVariableW(name, None, 0)
if n == 0:
return None
buf = ctypes.create_unicode_buffer(u'\0'*n)
ctypes.windll.kernel32.GetEnvironmentVariableW(name, buf, n)
return buf.value
# Locate all of the kindle-info style files and return as list
def getKindleInfoFiles():
kInfoFiles = []
# some 64 bit machines do not have the proper registry key for some reason
# or the python interface to the 32 vs 64 bit registry is broken
path = ""
if 'LOCALAPPDATA' in os.environ.keys():
Fixes for B&N key generation and Macs with bonded ethernet ports
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# Python 2.x does not return unicode env. Use Python 3.x
tools v6.0.8
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path = winreg.ExpandEnvironmentStrings(u"%LOCALAPPDATA%")
# this is just another alternative.
# path = getEnvironmentVariable('LOCALAPPDATA')
if not os.path.isdir(path):
path = ""
else:
# User Shell Folders show take precedent over Shell Folders if present
try:
# this will still break
regkey = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\User Shell Folders\\")
path = winreg.QueryValueEx(regkey, 'Local AppData')[0]
if not os.path.isdir(path):
path = ""
try:
regkey = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\\")
path = winreg.QueryValueEx(regkey, 'Local AppData')[0]
if not os.path.isdir(path):
path = ""
except RegError:
pass
except RegError:
pass
found = False
if path == "":
print ('Could not find the folder in which to look for kinfoFiles.')
else:
# Probably not the best. To Fix (shouldn't ignore in encoding) or use utf-8
print(u'searching for kinfoFiles in ' + path.encode('ascii', 'ignore'))
# look for (K4PC 1.9.0 and later) .kinf2011 file
kinfopath = path +'\\Amazon\\Kindle\\storage\\.kinf2011'
if os.path.isfile(kinfopath):
found = True
print('Found K4PC 1.9+ kinf2011 file: ' + kinfopath.encode('ascii','ignore'))
kInfoFiles.append(kinfopath)
# look for (K4PC 1.6.0 and later) rainier.2.1.1.kinf file
kinfopath = path +'\\Amazon\\Kindle\\storage\\rainier.2.1.1.kinf'
if os.path.isfile(kinfopath):
found = True
print('Found K4PC 1.6-1.8 kinf file: ' + kinfopath)
kInfoFiles.append(kinfopath)
# look for (K4PC 1.5.0 and later) rainier.2.1.1.kinf file
kinfopath = path +'\\Amazon\\Kindle For PC\\storage\\rainier.2.1.1.kinf'
if os.path.isfile(kinfopath):
found = True
print('Found K4PC 1.5 kinf file: ' + kinfopath)
kInfoFiles.append(kinfopath)
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
tools v6.0.8
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# look for original (earlier than K4PC 1.5.0) kindle-info files
kinfopath = path +'\\Amazon\\Kindle For PC\\{AMAwzsaPaaZAzmZzZQzgZCAkZ3AjA_AY}\\kindle.info'
if os.path.isfile(kinfopath):
found = True
print('Found K4PC kindle.info file: ' + kinfopath)
kInfoFiles.append(kinfopath)
tools v6.0.0 The first unified calibre plugin
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tools v6.0.8
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if not found:
print('No K4PC kindle.info/kinf/kinf2011 files have been found.')
return kInfoFiles
tools v6.0.0 The first unified calibre plugin
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tools v6.0.8
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# determine type of kindle info provided and return a
# database of keynames and values
def getDBfromFile(kInfoFile):
First try at a fix for the Kindle for PC encryption update
2016-03-13 06:00:57 -06:00
names = [\
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
'kindle.account.tokens',\
'kindle.cookie.item',\
'eulaVersionAccepted',\
'login_date',\
'kindle.token.item',\
'login',\
'kindle.key.item',\
'kindle.name.info',\
'kindle.device.info',\
'MazamaRandomNumber',\
'max_date',\
'SIGVERIF',\
'build_version',\
]
First try at a fix for the Kindle for PC encryption update
2016-03-13 06:00:57 -06:00
tools v6.0.8
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DB = {}
with open(kInfoFile, 'rb') as infoReader:
data = infoReader.read()
Fixes for B&N key generation and Macs with bonded ethernet ports
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# assume newest .kinf2011 style .kinf file
# the .kinf file uses "/" to separate it into records
# so remove the trailing "/" to make it easy to use split
data = data[:-1]
items = data.split('/')
# starts with an encoded and encrypted header blob
headerblob = items.pop(0)
encryptedValue = decode(headerblob, testMap1)
cleartext = UnprotectHeaderData(encryptedValue)
#print "header cleartext:",cleartext
# now extract the pieces that form the added entropy
pattern = re.compile(r'''\[Version:(\d+)\]\[Build:(\d+)\]\[Cksum:([^\]]+)\]\[Guid:([\{\}a-z0-9\-]+)\]''', re.IGNORECASE)
for m in re.finditer(pattern, cleartext):
added_entropy = m.group(2) + m.group(4)
# loop through the item records until all are processed
while len(items) > 0:
# get the first item record
item = items.pop(0)
# the first 32 chars of the first record of a group
# is the MD5 hash of the key name encoded by charMap5
keyhash = item[0:32]
# the sha1 of raw keyhash string is used to create entropy along
# with the added entropy provided above from the headerblob
entropy = SHA1(keyhash) + added_entropy
# the remainder of the first record when decoded with charMap5
# has the ':' split char followed by the string representation
# of the number of records that follow
# and make up the contents
srcnt = decode(item[34:],charMap5)
rcnt = int(srcnt)
# read and store in rcnt records of data
# that make up the contents value
edlst = []
for i in xrange(rcnt):
tools v6.0.8
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item = items.pop(0)
Fixes for B&N key generation and Macs with bonded ethernet ports
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edlst.append(item)
# key names now use the new testMap8 encoding
keyname = "unknown"
for name in names:
if encodeHash(name,testMap8) == keyhash:
keyname = name
#print "keyname found from hash:",keyname
break
if keyname == "unknown":
keyname = keyhash
#print "keyname not found, hash is:",keyname
# the testMap8 encoded contents data has had a length
# of chars (always odd) cut off of the front and moved
# to the end to prevent decoding using testMap8 from
# working properly, and thereby preventing the ensuing
# CryptUnprotectData call from succeeding.
# The offset into the testMap8 encoded contents seems to be:
# len(contents)-largest prime number <= int(len(content)/3)
# (in other words split "about" 2/3rds of the way through)
# move first offsets chars to end to align for decode by testMap8
# by moving noffset chars from the start of the
# string to the end of the string
encdata = "".join(edlst)
#print "encrypted data:",encdata
contlen = len(encdata)
noffset = contlen - primes(int(contlen/3))[-1]
pfx = encdata[0:noffset]
encdata = encdata[noffset:]
encdata = encdata + pfx
#print "rearranged data:",encdata
# decode using new testMap8 to get the original CryptProtect Data
encryptedValue = decode(encdata,testMap8)
#print "decoded data:",encryptedValue.encode('hex')
cleartext = CryptUnprotectData(encryptedValue, entropy, 1)
if len(cleartext)>0:
#print "cleartext data:",cleartext,":end data"
DB[keyname] = cleartext
#print keyname, cleartext
if len(DB)>6:
tools v6.0.8
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# store values used in decryption
DB['IDString'] = GetIDString()
DB['UserName'] = GetUserName()
Fix for Kindle problem in Mac app and non-ascii username problem in Windows (plugin and app).
2015-03-25 01:26:33 -06:00
print u"Decrypted key file using IDString '{0:s}' and UserName '{1:s}'".format(GetIDString(), GetUserName().encode('hex'))
tools v6.0.8
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else:
First try at a fix for the Kindle for PC encryption update
2016-03-13 06:00:57 -06:00
print u"Couldn't decrypt file."
tools v6.0.8
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DB = {}
return DB
elif isosx:
import copy
import subprocess
# interface to needed routines in openssl's libcrypto
def _load_crypto_libcrypto():
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
from ctypes.util import find_library
libcrypto = find_library('crypto')
if libcrypto is None:
raise DrmException(u"libcrypto not found")
libcrypto = CDLL(libcrypto)
# From OpenSSL's crypto aes header
#
# AES_ENCRYPT 1
# AES_DECRYPT 0
# AES_MAXNR 14 (in bytes)
# AES_BLOCK_SIZE 16 (in bytes)
#
# 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);
#
# note: the ivec string, and output buffer are both mutable
# 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
c_char_pp = POINTER(c_char_p)
c_int_p = POINTER(c_int)
class AES_KEY(Structure):
_fields_ = [('rd_key', c_long * (4 * (AES_MAXNR + 1))), ('rounds', c_int)]
AES_KEY_p = POINTER(AES_KEY)
def F(restype, name, argtypes):
func = getattr(libcrypto, name)
func.restype = restype
func.argtypes = argtypes
return func
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])
# From OpenSSL's Crypto evp/p5_crpt2.c
#
# int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
# const unsigned char *salt, int saltlen, int iter,
# int keylen, unsigned char *out);
PKCS5_PBKDF2_HMAC_SHA1 = F(c_int, 'PKCS5_PBKDF2_HMAC_SHA1',
[c_char_p, c_ulong, c_char_p, c_ulong, c_ulong, c_ulong, c_char_p])
class LibCrypto(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 DrmException(u"AES improper key used")
return
keyctx = self._keyctx = AES_KEY()
self._iv = iv
self._userkey = userkey
rv = AES_set_decrypt_key(userkey, len(userkey) * 8, keyctx)
if rv < 0:
raise DrmException(u"Failed to initialize AES key")
def decrypt(self, data):
out = create_string_buffer(len(data))
mutable_iv = create_string_buffer(self._iv, len(self._iv))
keyctx = self._keyctx
rv = AES_cbc_encrypt(data, out, len(data), keyctx, mutable_iv, 0)
if rv == 0:
raise DrmException(u"AES decryption failed")
return out.raw
def keyivgen(self, passwd, salt, iter, keylen):
saltlen = len(salt)
passlen = len(passwd)
out = create_string_buffer(keylen)
rv = PKCS5_PBKDF2_HMAC_SHA1(passwd, passlen, salt, saltlen, iter, keylen, out)
return out.raw
return LibCrypto
def _load_crypto():
LibCrypto = None
try:
LibCrypto = _load_crypto_libcrypto()
except (ImportError, DrmException):
pass
return LibCrypto
LibCrypto = _load_crypto()
# Various character maps used to decrypt books. Probably supposed to act as obfuscation
charMap1 = 'n5Pr6St7Uv8Wx9YzAb0Cd1Ef2Gh3Jk4M'
charMap2 = 'ZB0bYyc1xDdW2wEV3Ff7KkPpL8UuGA4gz-Tme9Nn_tHh5SvXCsIiR6rJjQaqlOoM'
# For kinf approach of K4Mac 1.6.X or later
# On K4PC charMap5 = 'AzB0bYyCeVvaZ3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_c1XxDdW2wE'
# For Mac they seem to re-use charMap2 here
charMap5 = charMap2
# new in K4M 1.9.X
testMap8 = 'YvaZ3FfUm9Nn_c1XuG4yCAzB0beVg-TtHh5SsIiR6rJjQdW2wEq7KkPpL8lOoMxD'
# uses a sub process to get the Hard Drive Serial Number using ioreg
# returns serial numbers of all internal hard drive drives
def GetVolumesSerialNumbers():
sernums = []
sernum = os.getenv('MYSERIALNUMBER')
if sernum != None:
sernums.append(sernum.strip())
cmdline = '/usr/sbin/ioreg -w 0 -r -c AppleAHCIDiskDriver'
cmdline = cmdline.encode(sys.getfilesystemencoding())
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
out1, out2 = p.communicate()
Fixes for B&N key generation and Macs with bonded ethernet ports
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#print out1
tools v6.0.8
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reslst = out1.split('\n')
cnt = len(reslst)
for j in xrange(cnt):
resline = reslst[j]
pp = resline.find('\"Serial Number\" = \"')
if pp >= 0:
sernum = resline[pp+19:-1]
sernums.append(sernum.strip())
return sernums
Fixes for B&N key generation and Macs with bonded ethernet ports
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def GetDiskPartitionNames():
names = []
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cmdline = '/sbin/mount'
cmdline = cmdline.encode(sys.getfilesystemencoding())
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
out1, out2 = p.communicate()
reslst = out1.split('\n')
cnt = len(reslst)
for j in xrange(cnt):
resline = reslst[j]
if resline.startswith('/dev'):
(devpart, mpath) = resline.split(' on ')
dpart = devpart[5:]
Fixes for B&N key generation and Macs with bonded ethernet ports
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names.append(dpart)
return names
# uses a sub process to get the UUID of all disk partitions
def GetDiskPartitionUUIDs():
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uuids = []
uuidnum = os.getenv('MYUUIDNUMBER')
if uuidnum != None:
uuids.append(strip(uuidnum))
cmdline = '/usr/sbin/ioreg -l -S -w 0 -r -c AppleAHCIDiskDriver'
cmdline = cmdline.encode(sys.getfilesystemencoding())
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
out1, out2 = p.communicate()
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#print out1
tools v6.0.8
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reslst = out1.split('\n')
cnt = len(reslst)
for j in xrange(cnt):
resline = reslst[j]
pp = resline.find('\"UUID\" = \"')
if pp >= 0:
uuidnum = resline[pp+10:-1]
uuidnum = uuidnum.strip()
Fixes for B&N key generation and Macs with bonded ethernet ports
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uuids.append(uuidnum)
tools v6.0.8
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return uuids
def GetMACAddressesMunged():
macnums = []
macnum = os.getenv('MYMACNUM')
if macnum != None:
macnums.append(macnum)
Fixes for B&N key generation and Macs with bonded ethernet ports
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cmdline = 'networksetup -listallhardwareports' # en0'
tools v6.0.8
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cmdline = cmdline.encode(sys.getfilesystemencoding())
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
out1, out2 = p.communicate()
reslst = out1.split('\n')
cnt = len(reslst)
for j in xrange(cnt):
resline = reslst[j]
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
pp = resline.find('Ethernet Address: ')
tools v6.0.8
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if pp >= 0:
Fixes for B&N key generation and Macs with bonded ethernet ports
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#print resline
macnum = resline[pp+18:]
tools v6.0.8
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macnum = macnum.strip()
maclst = macnum.split(':')
n = len(maclst)
if n != 6:
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
continue
#print 'original mac', macnum
# now munge it up the way Kindle app does
# by xoring it with 0xa5 and swapping elements 3 and 4
tools v6.0.8
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for i in range(6):
maclst[i] = int('0x' + maclst[i], 0)
mlst = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
mlst[5] = maclst[5] ^ 0xa5
mlst[4] = maclst[3] ^ 0xa5
mlst[3] = maclst[4] ^ 0xa5
mlst[2] = maclst[2] ^ 0xa5
mlst[1] = maclst[1] ^ 0xa5
mlst[0] = maclst[0] ^ 0xa5
macnum = '%0.2x%0.2x%0.2x%0.2x%0.2x%0.2x' % (mlst[0], mlst[1], mlst[2], mlst[3], mlst[4], mlst[5])
Fixes for B&N key generation and Macs with bonded ethernet ports
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#print 'munged mac', macnum
macnums.append(macnum)
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return macnums
# uses unix env to get username instead of using sysctlbyname
def GetUserName():
username = os.getenv('USER')
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
#print "Username:",username
tools v6.0.8
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return username
def GetIDStrings():
# Return all possible ID Strings
strings = []
strings.extend(GetMACAddressesMunged())
strings.extend(GetVolumesSerialNumbers())
Fixes for B&N key generation and Macs with bonded ethernet ports
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strings.extend(GetDiskPartitionNames())
strings.extend(GetDiskPartitionUUIDs())
tools v6.0.8
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strings.append('9999999999')
Fixes for B&N key generation and Macs with bonded ethernet ports
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#print "ID Strings:\n",strings
tools v6.0.8
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return strings
# unprotect the new header blob in .kinf2011
# used in Kindle for Mac Version >= 1.9.0
def UnprotectHeaderData(encryptedData):
passwdData = 'header_key_data'
salt = 'HEADER.2011'
iter = 0x80
keylen = 0x100
crp = LibCrypto()
key_iv = crp.keyivgen(passwdData, salt, iter, keylen)
key = key_iv[0:32]
iv = key_iv[32:48]
crp.set_decrypt_key(key,iv)
cleartext = crp.decrypt(encryptedData)
return cleartext
# implements an Pseudo Mac Version of Windows built-in Crypto routine
Fixes for B&N key generation and Macs with bonded ethernet ports
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class CryptUnprotectData(object):
tools v6.0.8
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def __init__(self, entropy, IDString):
sp = GetUserName() + '+@#$%+' + IDString
passwdData = encode(SHA256(sp),charMap2)
salt = entropy
self.crp = LibCrypto()
iter = 0x800
keylen = 0x400
key_iv = self.crp.keyivgen(passwdData, salt, iter, keylen)
self.key = key_iv[0:32]
self.iv = key_iv[32:48]
self.crp.set_decrypt_key(self.key, self.iv)
def decrypt(self, encryptedData):
cleartext = self.crp.decrypt(encryptedData)
cleartext = decode(cleartext, charMap2)
return cleartext
# Locate the .kindle-info files
def getKindleInfoFiles():
# file searches can take a long time on some systems, so just look in known specific places.
kInfoFiles=[]
found = False
home = os.getenv('HOME')
# check for .kinf2011 file in new location (App Store Kindle for Mac)
testpath = home + '/Library/Containers/com.amazon.Kindle/Data/Library/Application Support/Kindle/storage/.kinf2011'
if os.path.isfile(testpath):
kInfoFiles.append(testpath)
print('Found k4Mac kinf2011 file: ' + testpath)
found = True
# check for .kinf2011 files from 1.10
testpath = home + '/Library/Application Support/Kindle/storage/.kinf2011'
if os.path.isfile(testpath):
kInfoFiles.append(testpath)
print('Found k4Mac kinf2011 file: ' + testpath)
found = True
# check for .rainier-2.1.1-kinf files from 1.6
testpath = home + '/Library/Application Support/Kindle/storage/.rainier-2.1.1-kinf'
if os.path.isfile(testpath):
kInfoFiles.append(testpath)
print('Found k4Mac rainier file: ' + testpath)
found = True
# check for .kindle-info files from 1.4
testpath = home + '/Library/Application Support/Kindle/storage/.kindle-info'
if os.path.isfile(testpath):
kInfoFiles.append(testpath)
print('Found k4Mac kindle-info file: ' + testpath)
found = True
# check for .kindle-info file from 1.2.2
testpath = home + '/Library/Application Support/Amazon/Kindle/storage/.kindle-info'
if os.path.isfile(testpath):
kInfoFiles.append(testpath)
print('Found k4Mac kindle-info file: ' + testpath)
found = True
# check for .kindle-info file from 1.0 beta 1 (27214)
testpath = home + '/Library/Application Support/Amazon/Kindle for Mac/storage/.kindle-info'
if os.path.isfile(testpath):
kInfoFiles.append(testpath)
print('Found k4Mac kindle-info file: ' + testpath)
found = True
if not found:
print('No k4Mac kindle-info/rainier/kinf2011 files have been found.')
return kInfoFiles
# determine type of kindle info provided and return a
# database of keynames and values
def getDBfromFile(kInfoFile):
First try at a fix for the Kindle for PC encryption update
2016-03-13 06:00:57 -06:00
names = [\
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
'kindle.account.tokens',\
'kindle.cookie.item',\
'eulaVersionAccepted',\
'login_date',\
'kindle.token.item',\
'login',\
'kindle.key.item',\
'kindle.name.info',\
'kindle.device.info',\
'MazamaRandomNumber',\
'max_date',\
'SIGVERIF',\
'build_version',\
]
tools v6.0.8
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with open(kInfoFile, 'rb') as infoReader:
filedata = infoReader.read()
Fixes for B&N key generation and Macs with bonded ethernet ports
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data = filedata[:-1]
items = data.split('/')
tools v6.0.8
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IDStrings = GetIDStrings()
for IDString in IDStrings:
#print "trying IDString:",IDString
try:
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
DB = {}
items = data.split('/')
# the headerblob is the encrypted information needed to build the entropy string
headerblob = items.pop(0)
encryptedValue = decode(headerblob, charMap1)
cleartext = UnprotectHeaderData(encryptedValue)
# now extract the pieces in the same way
# this version is different from K4PC it scales the build number by multipying by 735
pattern = re.compile(r'''\[Version:(\d+)\]\[Build:(\d+)\]\[Cksum:([^\]]+)\]\[Guid:([\{\}a-z0-9\-]+)\]''', re.IGNORECASE)
for m in re.finditer(pattern, cleartext):
entropy = str(int(m.group(2)) * 0x2df) + m.group(4)
cud = CryptUnprotectData(entropy,IDString)
# loop through the item records until all are processed
while len(items) > 0:
# get the first item record
item = items.pop(0)
tools v6.0.8
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Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
# the first 32 chars of the first record of a group
# is the MD5 hash of the key name encoded by charMap5
keyhash = item[0:32]
keyname = 'unknown'
# unlike K4PC the keyhash is not used in generating entropy
# entropy = SHA1(keyhash) + added_entropy
# entropy = added_entropy
# the remainder of the first record when decoded with charMap5
# has the ':' split char followed by the string representation
# of the number of records that follow
# and make up the contents
srcnt = decode(item[34:],charMap5)
rcnt = int(srcnt)
# read and store in rcnt records of data
# that make up the contents value
edlst = []
for i in xrange(rcnt):
tools v6.0.8
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item = items.pop(0)
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
edlst.append(item)
tools v6.0.8
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Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
keyname = 'unknown'
for name in names:
if encodeHash(name,testMap8) == keyhash:
keyname = name
break
if keyname == 'unknown':
keyname = keyhash
# the testMap8 encoded contents data has had a length
# of chars (always odd) cut off of the front and moved
# to the end to prevent decoding using testMap8 from
# working properly, and thereby preventing the ensuing
# CryptUnprotectData call from succeeding.
# The offset into the testMap8 encoded contents seems to be:
# len(contents) - largest prime number less than or equal to int(len(content)/3)
# (in other words split 'about' 2/3rds of the way through)
# move first offsets chars to end to align for decode by testMap8
encdata = ''.join(edlst)
contlen = len(encdata)
# now properly split and recombine
# by moving noffset chars from the start of the
# string to the end of the string
noffset = contlen - primes(int(contlen/3))[-1]
pfx = encdata[0:noffset]
encdata = encdata[noffset:]
encdata = encdata + pfx
# decode using testMap8 to get the CryptProtect Data
encryptedValue = decode(encdata,testMap8)
cleartext = cud.decrypt(encryptedValue)
# print keyname
# print cleartext
if len(cleartext) > 0:
DB[keyname] = cleartext
if len(DB)>6:
break
tools v6.0.8
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except:
pass
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
if len(DB)>6:
tools v6.0.8
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# store values used in decryption
print u"Decrypted key file using IDString '{0:s}' and UserName '{1:s}'".format(IDString, GetUserName())
DB['IDString'] = IDString
DB['UserName'] = GetUserName()
else:
print u"Couldn't decrypt file."
DB = {}
return DB
else:
def getDBfromFile(kInfoFile):
raise DrmException(u"This script only runs under Windows or Mac OS X.")
return {}
def kindlekeys(files = []):
keys = []
if files == []:
files = getKindleInfoFiles()
for file in files:
key = getDBfromFile(file)
if key:
# convert all values to hex, just in case.
for keyname in key:
key[keyname]=key[keyname].encode('hex')
keys.append(key)
return keys
# interface for Python DeDRM
# returns single key or multiple keys, depending on path or file passed in
def getkey(outpath, files=[]):
keys = kindlekeys(files)
if len(keys) > 0:
if not os.path.isdir(outpath):
outfile = outpath
with file(outfile, 'w') as keyfileout:
keyfileout.write(json.dumps(keys[0]))
print u"Saved a key to {0}".format(outfile)
else:
keycount = 0
for key in keys:
while True:
keycount += 1
outfile = os.path.join(outpath,u"kindlekey{0:d}.k4i".format(keycount))
if not os.path.exists(outfile):
break
with file(outfile, 'w') as keyfileout:
keyfileout.write(json.dumps(key))
print u"Saved a key to {0}".format(outfile)
return True
return False
def usage(progname):
print u"Finds, decrypts and saves the default Kindle For Mac/PC encryption keys."
print u"Keys are saved to the current directory, or a specified output directory."
print u"If a file name is passed instead of a directory, only the first key is saved, in that file."
print u"Usage:"
print u" {0:s} [-h] [-k <kindle.info>] [<outpath>]".format(progname)
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
tools v6.0.1
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def cli_main():
tools v6.0.8
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sys.stdout=SafeUnbuffered(sys.stdout)
sys.stderr=SafeUnbuffered(sys.stderr)
tools v6.0.1
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argv=unicode_argv()
tools v6.0.8
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progname = os.path.basename(argv[0])
Fixes for B&N key generation and Macs with bonded ethernet ports
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print u"{0} v{1}\nCopyright © 2010-2016 by some_updates, Apprentice Alf and Apprentice Harper".format(progname,__version__)
tools v6.0.8
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try:
opts, args = getopt.getopt(argv[1:], "hk:")
except getopt.GetoptError, err:
print u"Error in options or arguments: {0}".format(err.args[0])
usage(progname)
sys.exit(2)
files = []
for o, a in opts:
if o == "-h":
usage(progname)
sys.exit(0)
if o == "-k":
files = [a]
if len(args) > 1:
usage(progname)
sys.exit(2)
if len(args) == 1:
# save to the specified file or directory
outpath = args[0]
if not os.path.isabs(outpath):
outpath = os.path.abspath(outpath)
tools v6.0.0 The first unified calibre plugin
2013-03-20 04:23:54 -06:00
else:
tools v6.0.8
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# save to the same directory as the script
outpath = os.path.dirname(argv[0])
Fixes for B&N key generation and Macs with bonded ethernet ports
2016-04-25 10:49:06 -06:00
# make sure the outpath is canonical
tools v6.0.8
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outpath = os.path.realpath(os.path.normpath(outpath))
if not getkey(outpath, files):
print u"Could not retrieve Kindle for Mac/PC key."
return 0
def gui_main():
try:
import Tkinter
import Tkconstants
import tkMessageBox
import traceback
except:
return cli_main()
class ExceptionDialog(Tkinter.Frame):
def __init__(self, root, text):
Tkinter.Frame.__init__(self, root, border=5)
label = Tkinter.Label(self, text=u"Unexpected error:",
anchor=Tkconstants.W, justify=Tkconstants.LEFT)
label.pack(fill=Tkconstants.X, expand=0)
self.text = Tkinter.Text(self)
self.text.pack(fill=Tkconstants.BOTH, expand=1)
self.text.insert(Tkconstants.END, text)
argv=unicode_argv()
root = Tkinter.Tk()
root.withdraw()
progpath, progname = os.path.split(argv[0])
success = False
try:
keys = kindlekeys()
keycount = 0
for key in keys:
while True:
keycount += 1
outfile = os.path.join(progpath,u"kindlekey{0:d}.k4i".format(keycount))
if not os.path.exists(outfile):
break
with file(outfile, 'w') as keyfileout:
keyfileout.write(json.dumps(key))
success = True
tkMessageBox.showinfo(progname, u"Key successfully retrieved to {0}".format(outfile))
except DrmException, e:
tkMessageBox.showerror(progname, u"Error: {0}".format(str(e)))
except Exception:
root.wm_state('normal')
root.title(progname)
text = traceback.format_exc()
ExceptionDialog(root, text).pack(fill=Tkconstants.BOTH, expand=1)
root.mainloop()
if not success:
tools v6.0.0 The first unified calibre plugin
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return 1
tools v6.0.8
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return 0
if __name__ == '__main__':
if len(sys.argv) > 1:
sys.exit(cli_main())
sys.exit(gui_main())