The PIN is the important part there, encrypted sessions (and/or EK cert verification) without PIN are not much more then obfuscation, and defeated by both the interposer attack, and the tweezer attack. (Or the TPM hack to rule them all, e.g. desoldering the chip and connecting it to a microcontroller you control)
I supposse a PIN is a slight improvement over a regular password, but a big appeal of TPM FDE in my opinion is unattended unlock.
I think discrete TPMs don't really have a future in systems that need robust system state attestation (both local and remote) against attackers with physical access. TPMs should be integrated into the CPU/SoC to defend against such attacks.
I supposse a PIN is a slight improvement over a regular password, but a big appeal of TPM FDE in my opinion is unattended unlock.
I think discrete TPMs don't really have a future in systems that need robust system state attestation (both local and remote) against attackers with physical access. TPMs should be integrated into the CPU/SoC to defend against such attacks.