Passgen is an simple Python alternative for the random character generator Crunch which attempts to solve cracking WPA/WPA2 keys by randomizing the output as opposed to generating a list like so (aaaaaaaa, aaaaaaab, aaaaaac, etc).
Example usage with aircrack-ng:
python passgen.py –l | sudo aircrack–ng —bssid 00:11:22:33:44:55 –w– WiFi.cap
Some other options are:
You can download Passgen v0.3 here:
Or read more here.