RATS Endorsements

In the IETF Remote Attestation Procedures (RATS) architecture, a Verifier accepts Evidence and uses Appraisal Policy for Evidence, typically with additional input from Endorsements and Reference Values, to generate Attestation Results in formats that are useful for Relying Parties. This document illustrates the purpose and role of Endorsements and discusses some considerations in the choice of message format for Endorsements in the scope of the RATS architecture. This document does not aim to define a conceptual message format for Endorsements and Reference Values. Instead, it extends RFC9334 to provide further details on Reference Values and Endorsements, as these topics were outside the scope of the RATS charter when RFC9334 was developed.