This it's just an evil piece of code to use the VPN network manager from OSX Lion with a cisco connection. For some reason they didn't make a client so i made this gem. Gives you the chance to use the shared key without to use any client... evil, i know.
require 'cisco_decrypt'
CiscoDecrypt.decrypt_string 'the_long_encrypted_string_that_cisco_pcf_uses'
# "SharedSecret"$ cisco_decrypt path_to_pcf_file_or_encrypted_String
# decrypted_string $ gem install cisco_decrypt- libgcrypt