Power analysis is a side-channel attack with the goal of extracting secrets from the device based solely on its power consumption. Back in 1998, Kocher, Jaffe, and Jun published the famous paper showing that it's possible to break encryption on many devices using just the power traces, a bit of math and inexpensive equipment. Some twenty-eight years later, this attack still works.
This talk covers the basics of static and differential power analysis: the methods, the math (with intuitive explanations), and, if the demo gods and the gods of time are both feeling generous, a live key extraction on stage. No prior knowledge assumed.