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Tutorial A5 Breaking AES-256 Bootloader

43 bytes added, 13:56, 21 June 2016
Capturing the Traces: Added image
Copy this script into a <code>.py</code> file somewhere convenient. Then, perform the following steps to finish the capture:
# Run the capture script, which will open a ChipWhisperer Capture window with everything connected for us.
# Open the terminal (''Tools > Terminal'') and connect to the board. While the terminal is open, press the ''Capture 1'' button. A single byte of data should appear in the terminal. This byte will either be <code>a1</code> (CRC failed) or <code>a4</code> (CRC OK). If you see any other responses, something is wrong.#: [[File:Tutorial-A5-Capture.PNG|image]]
# Once you're happy with this, open the General Settings tab and set the Number of Traces. You should need around 100 traces to break AES.
# Press the ''Capture Many'' button to record the 100 traces. You'll see the new traces plotted on-screen.
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