4 ms·
1. That connector size appears to be a DVI connector. How does TMDS affect data transmission via TEMPEST leakage? 2a. Would HDMI render this attack void, due t
by kefka 11y ago
1. That connector size appears to be a DVI connector. How does TMDS affect data transmission via TEMPEST leakage?
2a. Would HDMI render this attack void, due to encryption on the data signal layer?
2b. Since the HDMI master keys are known, would it be possible to modify data with the now-known key and pass data using this method?
3. What card is shown on the desktop? That looks like a rather suspicious card (GSM card?).
- ilurk 11y agoAFAICT the video interface is irrelevant. It exploits the data transfer between the CPU and RAM. > When data moves between the CPU and RAM of a computer, radio waves get emitted as a matter of course. Normally the amplitude of these waves wouldn’t be sufficient to transmit messages to a phone, but the researchers found that by generating a continuous stream of data over the multi-channel memory buses on a computer, they could increase the amplitude and use the generated waves to carry binary messages to a receiver.
- deleted 11y ago[deleted]
- deutronium 11y agoRegarding the airhopper paper at least, I found something pretty interesting from Markus Kuhn: http://www.cl.cam.ac.uk/~mgk25/pet2004-fpd.pdf http://www.cl.cam.ac.uk/~mgk25/pet2004-fpd.pdf "The two case studies presented in Sect. 4 and 5 analyze the compromising radio emanations first from a laptop LCD and then from a desktop LCD that is connected to its PC graphics card with a Digital Visual Interface (DVI) cable. In both cases, the video cable used to connect the display panel with the graphics controller turned out to be the primary source of the leaking signal."