mirror of
https://github.com/apprenticeharper/DeDRM_tools
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72 lines
2 KiB
Python
72 lines
2 KiB
Python
#!/usr/bin/python
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# Mobipocket PID calculator v0.2 for Amazon Kindle.
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# Copyright (c) 2007, 2009 Igor Skochinsky <skochinsky@mail.ru>
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# History:
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# 0.1 Initial release
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# 0.2 Added support for generating PID for iPhone (thanks to mbp)
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import sys, binascii
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if sys.hexversion >= 0x3000000:
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print "This script is incompatible with Python 3.x. Please install Python 2.6.x from python.org"
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sys.exit(2)
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letters = "ABCDEFGHIJKLMNPQRSTUVWXYZ123456789"
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def crc32(s):
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return (~binascii.crc32(s,-1))&0xFFFFFFFF
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def checksumPid(s):
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crc = crc32(s)
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crc = crc ^ (crc >> 16)
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res = s
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l = len(letters)
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for i in (0,1):
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b = crc & 0xff
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pos = (b // l) ^ (b % l)
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res += letters[pos%l]
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crc >>= 8
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return res
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def pidFromSerial(s, l):
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crc = crc32(s)
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arr1 = [0]*l
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for i in xrange(len(s)):
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arr1[i%l] ^= ord(s[i])
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crc_bytes = [crc >> 24 & 0xff, crc >> 16 & 0xff, crc >> 8 & 0xff, crc & 0xff]
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for i in xrange(l):
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arr1[i] ^= crc_bytes[i&3]
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pid = ""
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for i in xrange(l):
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b = arr1[i] & 0xff
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pid+=letters[(b >> 7) + ((b >> 5 & 3) ^ (b & 0x1f))]
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return pid
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print "Mobipocket PID calculator for Amazon Kindle. Copyright (c) 2007, 2009 Igor Skochinsky"
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if len(sys.argv)>1:
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serial = sys.argv[1]
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if len(serial)==16:
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if serial.startswith("B001"):
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print "Kindle 1 serial number detected"
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elif serial.startswith("B002"):
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print "Kindle 2 serial number detected"
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else:
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print "Warning: unrecognized serial number. Please recheck input."
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sys.exit(1)
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pid = pidFromSerial(serial,7)+"*"
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print "Mobipocked PID for Kindle serial# "+serial+" is "+checksumPid(pid)
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elif len(serial)==40:
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print "iPhone serial number (UDID) detected"
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pid = pidFromSerial(serial,8)
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print "Mobipocked PID for iPhone serial# "+serial+" is "+checksumPid(pid)
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else:
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print "Warning: unrecognized serial number. Please recheck input."
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sys.exit(1)
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else:
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print "Usage: kindlepid.py <Kindle Serial Number>/<iPhone/iPod Touch UDID>"
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