Thanks for your constructive reply. Your exact statement was:
Can data be transferred via acoustics over a 2 conductor 16 gauge wire at the speeds memory is accessed or is sent to the CPU? No
Which is of course true, if you're talking about >GB/s signals over wide buses.
But we're not. So I don't see why it's relevant here.
These attacks are not "sniff the actual data the CPU is flinging around by coupling to signal traces", so they don't need anything like full data-rate capability.
Edit: On re-reading your claim again, I noticed the phrase "transferred via acoustics over a 2 conductor 16 gauge wire" is a bit ambiguous.
Do you mean transferred electrically over those wires, but limited to the typical acoustic frequency band (say, 0-20kHz)? Or do you mean actually acoustically coupled as mechanical vibrations of the wire itself? I can't imagine it makes any difference to my argument above, but I do wonder.
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If you have to ask any of the rest of your arguments are invalidated.
Thanks for your constructive reply. Your exact statement was:
Which is of course true, if you're talking about >GB/s signals over wide buses.
But we're not. So I don't see why it's relevant here.
These attacks are not "sniff the actual data the CPU is flinging around by coupling to signal traces", so they don't need anything like full data-rate capability.
Edit: On re-reading your claim again, I noticed the phrase "transferred via acoustics over a 2 conductor 16 gauge wire" is a bit ambiguous. Do you mean transferred electrically over those wires, but limited to the typical acoustic frequency band (say, 0-20kHz)? Or do you mean actually acoustically coupled as mechanical vibrations of the wire itself? I can't imagine it makes any difference to my argument above, but I do wonder.