LPC bus tap. I feel like I'm modding PS2s again...pic.twitter.com/cXqzRa6SAN
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If the TPM will cough up cleartext keys to anyone who asks with the right PCRs, what's even the point of having antitamper mesh on the chip? Seems like you'd be just as well served with a PIC :P
Yeah. Well, you can generate asymmetric keys inside the TPM and use that to attest a given physical TPM. Doesn't help with BitLocker though. Also then it turns out your TPM is Infineon and generates ROCA RSA keys anyway.
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Yes, you can attest the physical TPM. But you can't attest that the CPU is running any particular software. Calculate the PCRs it expects and feed them over the MITM bus then get it to sign your challenge blob.
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Of course. It's just an anticloning thing, really. If you steal the TPM then you can always use it as an oracle.
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