On: Intel x86 Root of Trust: Loss of Trust

[josh2600]

I don’t think the enclave you’re describing exists, nor do I believe there is an enclave that is untrusted hardware.

Do you have an example of such an enclave and how it would operate without a remote attention service in the model where a user can trust that a distributed network they don’t control is safeguarding their key?

[sounds → josh2600]

If homomorphic encryption advances to the point where it's usable, that would be an example of security on untrusted hardware.

(But I suppose that just proves your point.)

[josh2600 → sounds]

Yes. I think if homomorphic encryption existed in a way that was super fast, we would be using that. It’s real far as far as I can tell.

[girvo → josh2600]

It's definitely real, but as you stated, incredibly slow (and noisy, though that's dealt with by refreshing). It has limitations currently, but there's good work right now lifting those, so it's definitely something to keep an eye on moving forward.