Hello all, i for the first time installed bt5 in my laptop which is LG G550. Though all seem to work fine with wired internet connection, i am not able to use my wifi network. Here is my wifi details and other which you all might need to help me out sort out this problem. I tried hitting all around the web to crack my wifi which is wep encrypted but after an hour later i came to know my wifi is not enabled so here i am now. Btw one more thing i want to crack my wifi so i need to install the wifi network. do help me with that also if possible but first please guide me installing the wifi drivers and stuff.

Code:
root@bt:~# lspci | grep -i network 
04:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)

root@bt:~# iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.