See docstrings in siri.py for more information. Requires a Mac in client mode
and record mode but works platform independent in server mode.

tl;dr:

How to recover iPhone 4S Siri authentication keys
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- Install biplist: easy_install biplist
- Install CA to your iPhone 4S: Email ca.crt to yourself and open on iPhone 4S.
- Run pysiri in server mode: sudo ./siri.py --server --save-keys
- Set DNS server on iPhone 4S to IP address of computer running pysiri.
- Make Siri request on iPhone 4S
- Quit pysiri by pressing Ctrl+C and your keys will be displayed in the Terminal
  as well as saved to a Python pickle file called keys.pickle