---- Original Message ----- > From: "Valdis Kletnieks" <valdis.kletni...@vt.edu>
> You really need assistance from one layer further down - if you're in > a VM, you need to ask the hypervisor. If you're on bare metal, you need > to ask the SMM or equivalent. If you're in the SMM, you need to ask the > hardware. And of course, at each level, you have to ask yourself how > you know that *that* level isn't lying to you.... > > (Yes, this is the corner of system security where, if you're not > already a paranoid schizophrenic, you will be soon.. :) If you have not already read the Ken Thompson paper: http://cm.bell-labs.com/who/ken/trust.html And for a bit more on whether it was ever actually implemented, from Ken himself: https://groups.google.com/d/msg/comp.security.unix/ivjYjNSduFc/0Er2cynPKjsJ Cheers, -- jra -- Jay R. Ashworth Baylink j...@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA #natog +1 727 647 1274
