If you encounter error when reading the wpacrack-01.cap, you should do the following step.pyrit -r wpacrack-01.cap -o new.cap stripLive/pentest/passwords/crunch/crunch 8 16 -f /pentest/passwords/crunch/charset.lst mixalpha-numeric-all-space-sv | pyrit --all-handshakes -r new.cap -b ff:ff:ff:ff:ff:ff -i - attack_passthrough*where 8 16 is the length of the password, i.e. from 8 characters to 16 char