WEP is an encryption scheme, based on the RC-4 cipher, that is available on all 802.11a, b and g wireless products. WEP uses a set of bits called a key to scramble information in the data frames as it leaves the access point or client adapter and the scrambled message is then decrypted by the receiver.
Both sides must have the same WEP key, which is usually a total of 64 or128 bits long. A semi-random 24 bit number called an InitializationVector (IV), is part of the key, so a 64 bit WEP key actually containsonly 40 bits of strongencryption while a 128 bit key has 104. The IVis placed in encrypted frames header, and is transmitted in plain text.
Traditionally,cracking WEP keys has been a slow and boring process. An attacker wouldhave to capture hundreds of thousands or millions of packets a processthat could take hours or even days, depending on the volume of trafficpassing over the wireless network. After enough packets were captured, aWEP cracking program such as Aircrack would be used to find the WEPkey.
Basic Directions:
1)Boot from cd
2)Get the wep key
3)Write it down
4)Reboot into windows
5)Connect using wep key
Download Here :
Part 1
Part 2