A Vendor Agnostic Root of Trust for Measurement

We report the success of a project that Google performed as a proof-of-concept for increasing
confidence in first-instruction integrity across a variety of server and peripheral environments. We
begin by motivating the problem of first-instruction integrity and share the lessons learned from
our proof-of-concept implementation. Our goal in sharing this information is to increase industry
support and engagement for similar designs. Notable features include a vendor-agnostic capability
to interpose on the SPI peripheral bus (from which bootstrap firmware is loaded upon power-on in a
wide variety of devices today) without negatively impacting the efficacy of any existing vendor- or
device-specific integrity mechanisms, thereby providing additional defense-in-depth.

Source: https://static.googleusercontent.com/media/research.google.com/en//pubs/archive/46352.pdf

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