Power Analysis

31c3 CTF - safelock (signals20)

For the 31c3 CTF, Eindbazen and fail0verflow joined forces as 0xffa, the Final Fail Alliance.
Don't miss out on other write-ups at Eindbazen's site!
safelock
Signals (20 pts)
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This is the circuit of a safe lock. Get the key to open it!
http://188.40.18.86/safelock/

It's neither about webtronics nor ngspice. Disregard bugs in both.

If you want to write spice code directly, use something like this

cat test.cir | curl --data-binary '@-' http://188.40.18.86/safelock/contest_spice/spice.cgi