After enough packets were captured, a WEP cracking program such as Aircrack would be used to find the WEP key. An attacker would have to capture hundreds of thousands or millions of packets? a process that could take hours or even days, depending on the volume of traffic passing over the wireless network. Detectores Wi-Fi - Netstumbler,Kismet,KisMAC,NetChaser « Lucas Pascoal. Traditionally, cracking WEP keys has been a slow and boring process. boxex will remain Downloads Jun07 7 June 2007, terrywitt 4:13 pm Downloads NetStumbler (also known as Network Stumbler) is a tool for Windows that facilitates detection of. The IV is placed in encrypted frames header, and is transmitted in plain text. A semirandom 24 bit number called an Initialization Vector (IV), is part of the key, so a 64 bit WEP key actually contains only 40 bits of strongencryption while a 128 bit key has 104. Both sides must have the same WEP key, which is usually a total of 64 or 128 bits long. 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. WEP is an encryption scheme, based on the RC4 cipher, that is available on all 802.11a, b and g wireless products.
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