SamBent on Nostr: Researchers pulled a 256-bit key out of a device by filming its power LED. The status ...
Researchers pulled a 256-bit key out of a device by filming its power LED. The status light flickers with the chip's power draw, and that leaks the key. A full ECDSA key was recovered from 16m away through a window via a hijacked camera.
https://www.nassiben.com/video-based-cryptaPublished at
2026-08-27 19:56:09 UTCEvent JSON
{
"id": "774ae66a2371f02768e0d742d846b9b052ac91891d9e489f1dcff53a633c7d17",
"pubkey": "2786c134148537aa3142222cccc1b6fcf4863643ca78a9625d91aa9748d0e478",
"created_at": 1787860569,
"kind": 1,
"tags": [],
"content": "Researchers pulled a 256-bit key out of a device by filming its power LED. The status light flickers with the chip's power draw, and that leaks the key. A full ECDSA key was recovered from 16m away through a window via a hijacked camera. https://www.nassiben.com/video-based-crypta",
"sig": "3a592f0b4501b42ef02a4ad81d57d779b6d12b05abd65969b5bcc2aae170ce2f3002fe114dcfe31a4fcdc77d3c7e3b50cd688c35dc1817fa0441ca5e66cd9031"
}
