[FreeNX-kNX] nxpassgen ported to python

[freenx]

I have ported the nx password scrambler
(http://www.nomachine.com/ar/view.php?ar_id=AR01C00125) to python script as
I needed it for single sign-on functionality.
I don't know if anyone else might need this. Anyway here it is:

nxpassgen.py:
-------------
import time

numValidCharList = 85
dummyString = '{{{{'

def encodePassword(p):
	sPass = ':'
	sTmp = ''
	
	
	if not p:
		return ''
	
	
	for i in xrange(len(p)):
		c = p[i]
		
		sTmp = "%d:" % (ord(c) + i + 1)
		sPass += sTmp
		sTmp = ""
	
	return sPass


validCharList = [
	'!',  '#',  '$',  '%',  '&',  '(', ')',  '*',  '+',  '-',
	'.',  '0',   '1',  '2',   '3',  '4',  '5',  '6', '7', '8',
	'9', ':',  ';',  '<',  '>',  '?',  '@',  'A',  'B', 'C',
	'D',  'E',  'F',  'G',  'H',  'I',  'J',  'K',  'L', 'M',
	'N', 'O',  'P',  'Q',  'R',  'S',  'T', 'U', 'V', 'W',
	'X',  'Y',  'Z',  '[', ']',  '_',  'a',  'b',  'c',  'd',
	'e',  'f',  'g',  'h',  'i',  'j',  'k',  'l',  'm',  'n',
	'o',  'p',  'q',  'r',  's',  't',  'u',  'v',  'w',  'x',
	'y',  'z',  '{',  '|',  '}' ]


def findCharInList(c):
	i = -1
	
	for j in xrange(numValidCharList):
		if validCharList[j] == c:
			i = j
			return i
	
	return i


def getRandomValidCharFromList():
	k = time.localtime()[5]
	return validCharList[k]



def scrambleString(s):
	sRet = ''


	if not s:
		return s


	str = encodePassword(s)


	if len(str) < 32:
		str += dummyString

	sRet = list(str)
	sRet.reverse()
	sRet = ''.join(sRet)

	if len(sRet) < 32:
		sRet += dummyString


	k = getRandomValidCharFromList()
	l = ord(k) + len(sRet) - 2
	
	
	sRet = k + sRet

	sRet_copy = sRet
	sRet = sRet[0]
	for i1 in xrange(1,len(sRet_copy)):
		j = findCharInList(sRet_copy[i1])
		
		if j == -1:
			return s
		
		i = (j + l * (i1 + 1)) % numValidCharList
		
		sRet += validCharList[i]

	c = ord(getRandomValidCharFromList()) + 2
	
	sRet += chr(c)
	
	return sRet
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