3 ms·
Some processors have a 'Firmware TPM' or 'Platform Trust Technology' where the TPM is integrated into the CPU itself, meaning no wires to probe/interpose. RAM,
by michaelt 3y ago
Some processors have a 'Firmware TPM' or 'Platform Trust Technology' where the TPM is integrated into the CPU itself, meaning no wires to probe/interpose.
RAM, PCIe and USB remain unencrypted though so you can just interpose one of those if you're performing an evil maid attack.
- dist-epoch 3y agoRecent Intel/AMD CPUs feature transparent full memory encryption. Recent AMDs have another feature called SecureBio(metrics) which directly connect one USB socket to the CPU in such a way interception is not possible, which allows one to design a secure USB device (fingerprint reader, webcam for now) which can't be intercepted at the bus level. PCIe is still vulnerable, but I bet it won't be long before transparent encryption comes to it.