> I could construct a "bench level test" that MIGHT be able to detect the computation No need. The author of the original paper already did that for you. htt

> I could construct a "bench level test" that MIGHT be able to detect the computation No need. The author of the original paper already did that for you. https://eprint.iacr.org/2023/923 https://eprint.iacr.org/2023/923 "We demonstrate the application of video-based cryptanalysis by performing two side-channel cryptanalytic timing attacks and recover: (1) a 256- bit ECDSA key from a smart card by analyzing video footage of the power LED of a smart card reader via a hijacked Internet-connected security camera located 16 meters away from the smart card reader, and (2) a 378-bit SIKE key from a Samsung Galaxy S8 by analyzing video footage of the power LED of Logitech Z120 USB speakers that were connected to the same USB hub (that was used to charge the Galaxy S8) via an iPhone 13 Pro Max." To all the EEs out there. PSRR and power supply cross talk is a thing...