Pyrit takes a step ahead in attacking WPA-PSK and WPA2-PSK, the protocols that protect today's public WIFI-airspace.
Pyrit's implementation allows to create massive databases, pre-computing part of the WPA/WPA2-PSK authentication phase in a space-time-tradeoff. The performance gain for real-world-attacks is in the range of three orders of magnitude which urges for re-consideration of the protocol's security. Exploiting the computational power of Many-Core- and other platforms through ATI-Stream, Nvidia CUDA, OpenCL and VIA Padlock, it is currently by far the most powerful attack against one of the world's most used security-protocols. For more background see this article on the project's blog.
Pyrit is free software - free as in freedom. Everyone can inspect, copy or modify it and share derived work under the GNU General Public License v3.
What's new
See http://pyrit.wordpress.com
How to use
Pyrit compiles and runs fine on Linux and MacOS X. None of the BSD systems were tested but all posix systems should be fine anyway. I don't care about Windows; drop me a line (read: patch) if you make Pyrit work without copying half of GNU ...
A guide for installing Pyrit on your system can be found in the wiki. There is also a reference manual for the commandline-client.
How to participate
You may want to read this wiki-entry if interested in porting Pyrit to new hardware-platform. Contribution or comments should be posted to the Issue-tracker. I also usually idle in #python and #cuda on irc.freenode.org