OpenWebNet password
Calculates the password requested by ethernet gateways from the Legrand / Bticino MyHome OpenWebNet home automation system when the user's ip address is not in the gateway's whitelist
conversation goes as follows
< *#*1## > *99*0## < *#603356072##
at which point a password should be sent back, calculated from the "openpassword" that is set in the gateway, and the nonce that was just sent
> *#25280520## < *#*1##
Python
<lang python>#!/usr/bin/env python
- -*- coding: utf-8 -*-
def ownCalcPass (password, nonce) :
m_1 = 0xFFFFFFFFL m_8 = 0xFFFFFFF8L m_16 = 0xFFFFFFF0L m_128 = 0xFFFFFF80L m_16777216 = 0XFF000000L flag = True num1 = 0L num2 = 0L password = long(password)
for c in nonce : num1 = num1 & m_1 num2 = num2 & m_1 if c == '1': length = not flag if not length : num2 = password num1 = num2 & m_128 num1 = num1 >> 7 num2 = num2 << 25 num1 = num1 + num2 flag = False elif c == '2': length = not flag if not length : num2 = password num1 = num2 & m_16 num1 = num1 >> 4 num2 = num2 << 28 num1 = num1 + num2 flag = False elif c == '3': length = not flag if not length : num2 = password num1 = num2 & m_8 num1 = num1 >> 3 num2 = num2 << 29 num1 = num1 + num2 flag = False elif c == '4': length = not flag
if not length: num2 = password num1 = num2 << 1 num2 = num2 >> 31 num1 = num1 + num2 flag = False elif c == '5': length = not flag if not length: num2 = password num1 = num2 << 5 num2 = num2 >> 27 num1 = num1 + num2 flag = False elif c == '6': length = not flag if not length: num2 = password num1 = num2 << 12 num2 = num2 >> 20 num1 = num1 + num2 flag = False elif c == '7': length = not flag if not length: num2 = password num1 = num2 & 0xFF00L num1 = num1 + (( num2 & 0xFFL ) << 24 ) num1 = num1 + (( num2 & 0xFF0000L ) >> 16 ) num2 = ( num2 & m_16777216 ) >> 8 num1 = num1 + num2 flag = False elif c == '8': length = not flag if not length: num2 = password num1 = num2 & 0xFFFFL num1 = num1 << 16 num1 = num1 + ( num2 >> 24 ) num2 = num2 & 0xFF0000L num2 = num2 >> 8 num1 = num1 + num2 flag = False elif c == '9': length = not flag if not length: num2 = password num1 = ~num2 flag = False else : num1 = num2 num2 = num1 return num1 & m_1
def ownTestCalcPass (passwd, nonce, expected) :
res = ownCalcPass(passwd, nonce) m = passwd+' '+nonce+' '+str(res)+' '+str(expected) if res == long(expected) : print 'PASS '+m else : print 'FAIL '+m
if __name__ == '__main__':
import sys
ownTestCalcPass('12345','603356072','25280520') ownTestCalcPass('12345','410501656','119537670')