The IESG has approved the following document: - 'Entity Attestation Token (EAT) Measured Component' (draft-ietf-rats-eat-measured-component-12.txt) as Proposed Standard
This document is the product of the Remote ATtestation ProcedureS Working Group. The IESG contact persons are Paul Wouters and Deb Cooley. A URL of this Internet-Draft is: https://datatracker.ietf.org/doc/draft-ietf-rats-eat-measured-component/ Technical Summary The term "measured component" refers to an object within the attester's target environment whose state can be sampled and typically digested using a cryptographic hash function. Examples of measured components include firmware stored in flash memory, software loaded into memory at start time, data stored in a file system, or values in a CPU register. This document provides the information model for the "measured component" and two associated data models. This separation is intentional: the JSON and CBOR serializations, coupled with the media types and associated CoAP Content-Formats, enable the immediate use of the semantics within the EAT framework. Meanwhile, the information model can be reused in future specifications to provide additional serializations, for example using ASN.1. Working Group Summary The document has received reviews and feedback from at least 10 people involved in the RATS WG, across multiple channels (IETF meetings, mailing list, Github issues). The reviewer group spans a wide range of backgrounds (academic, confidential computing, networking infrastructure, IoT). All sections of the document have been refined through the review process. There is a strong consensus among interested participants. Document Quality A Go language implementation exists, and is integrated into a library providing support for Entity Attestation Tokens. https://github.com/veraison/eat/blob/main/measured_component.go The document contains CDDL, as well as CBOR and JSON examples. These have been improved repeatedly through reviews from multiple WG members, including experts (e.g., [fix-flags-size]). MediaType registration request (Nov 2025): https://mailarchive.ietf.org/arch/msg/media-types/E4lFQMwcoMh_kwZyMGvXWUWXvgw/# and the response: mailarchive.ietf.org/arch/msg/media-types/EEGjMwGvQqY4joVuyP3Qmo0tSRU/ Personnel The Document Shepherd for this document is Ionuț Mihalcea. The Responsible Area Director is Deb Cooley. _______________________________________________ IETF-Announce mailing list -- [email protected] To unsubscribe send an email to [email protected]
