#!/usr/bin/env python

# OpenRG (http://www.jungo.com/openrg/pr_openrg.html) password deobfuscator
#
# Credits
# ~~~~~~~
# thanks to Zibri (http://www.zibri.org/2009/11/obfuscation-will-never-work.html)
#
# Contact
# ~~~~~~~
# cygeus at gmail dot com
#
# Changelog
# ~~~~~~~~~
# version 0.1
#	- initial release

import re
import sys

def deobfuscate(enc):
	key = [86, -12, -17, 80, 52, 169, -17, 107, 85, 75, 3, 60, 154, 1, 120, 179, -3, 177, 61, 211, 155, 210, 203, 159, 6, 209, 209, 101, -24, 189, 45, 159, 177, -17, 141, 216, -12, -4, 187, 195, 184, 161, 11, 174, 61, 193, 46, 174, -29, 84, 7, -15, 10, 90, 208, 138, 120, 4, 6, 50, 134, 44, 172, -14]
	index = [0]
	def decode(m):
		text = m.group(0)
		# character reference
		if text[:1] == "&":
			value = int(text[1:-1], 16)
		# character
		else:
			value = ord(text[:1])
		zib = value - key[index[0]]
		if zib < 0:
			zib = zib + 255
		index[0] = index[0] + 1
		return chr(zib);
	return re.sub("&\w+;|[^&]", decode, enc)
	
def usage():
	print "Usage: decrypt.py <encrypted key>"

if __name__ == "__main__":
	if len(sys.argv) != 2:
		usage()
	else:
		print deobfuscate(sys.argv[1])