Pluggable Trust Architecture [abstract]
David I. August, Stephen Beard, and Soumyadeep Ghosh
United States Patent Number 11,314,865, April 2022.

A pluggable trust architecture addresses the problem of establishing trust in hardware. The architecture has low impact on system performance and comprises a simple, user-supplied, and pluggable hardware element. The hardware element physically separates the untrusted components of a system from peripheral components that communicate with the external world. The invention only allows results of correct execution of software to be communicated externally.