We were able to extend Klein's attack and optimize it for usage against WEP. Using our version, it is possible to recover a 104 bit WEP key with probability 50% using just 40,000 captured packets. For 60,000 available data packets, the success probability is about 80% and for 85,000 data packets about 95%. Using active techniques like deauth and ARP re-injection, 40,000 packets can be captured in less than one minute under good condition. The actual computation takes about 3 seconds and 3 MB main memory on a Pentium-M 1.7 GHz and can additionally be optimized for devices with slower CPUs. The same attack can be used for 40 bit keys too with an even higher success probability.
Category:   Software > Cracking Wep

The Portable Penetrator tests and secures your wireless networks with complete Security auditing of WEP, WPA, WPA2 auditing and vulnerability assessment and scanning
Category:   Software > Cracking Wep
Software > Security
Software > other WiFi stuff

coWPAtty is designed to audit the security of pre-shared keys selected in WiFi Protected Access (WPA) networks.
Category:   Software > Cracking Wep

WEPCrack is an open source tool for breaking 802.11 WEP secret keys. This tool is is an implementation of the attack described by Fluhrer, Mantin, and Shamir in the paper "Weaknesses in the Key Scheduling Algorithm of RC4".
Category:   Software > Cracking Wep

First release of chopchop. WEP cracker which uses the AP to decipher packets. Easiest one are ARP's. Takes 10-20s. Included within patches for wlan-ng to inject packets in monitor mode (I'll try to do hostap for the next release). That's about it. Bits and pieces are missing here and there (only decodes IP/ARP traffic), but it's pretty complete. Bug reports are welcome.
Category:   Software > Cracking Wep