Uploaded June 2023 | Updated September 2026, 3 weeks ago

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Extracting a secret key by simply watching the flickering of an LED? Sounds implausible but that's what we're discussing with Dr Mike Pound!

Author’s page on the attack:
Video-Based Cryptanalysis (nassiben.com)
Paper: bit.ly/C_PowerLED

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This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at bradyharan.com