A YANG Data Model for Challenge-Response-based Remote Attestation Procedures using TPMs
draft-ietf-rats-yang-tpm-charra-00
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Last updated 2020-01-07
Replaces draft-birkholz-rats-basic-yang-module
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RATS Working Group                                           H. Birkholz
Internet-Draft                                                  M. Eckel
Intended status: Standards Track                          Fraunhofer SIT
Expires: July 10, 2020                                       S. Bhandari
                                                               B. Sulzen
                                                                 E. Voit
                                                                   Cisco
                                                                  L. Xia
                                                                  Huawei
                                                               T. Laffey
                                                                     HPE
                                                             G. Fedorkow
                                                                 Juniper
                                                        January 07, 2020

   A YANG Data Model for Challenge-Response-based Remote Attestation
                         Procedures using TPMs
                   draft-ietf-rats-yang-tpm-charra-00

Abstract

   This document defines a YANG RPC and a minimal datastore tree
   required to retrieve attestation evidence about integrity
   measurements from a composite device with one or more roots of trust
   for reporting.  Complementary measurement logs are also provided by
   the YANG RPC originating from one or more roots of trust of
   measurement.  The module defined requires at least one TPM 1.2 or TPM
   2.0 and corresponding Trusted Software Stack included in the device
   components of the composite device the YANG server is running on.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
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   This Internet-Draft will expire on July 10, 2020.

Birkholz, et al.          Expires July 10, 2020                 [Page 1]
Internet-Draft            YANG-CHARRA for TPMs              January 2020

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements notation . . . . . . . . . . . . . . . . . .   3
   2.  The YANG Module for Basic Remote Attestation Procedures . . .   3
     2.1.  Tree Diagram  . . . . . . . . . . . . . . . . . . . . . .   3
     2.2.  YANG Module . . . . . . . . . . . . . . . . . . . . . . .   7
   3.  IANA considerations . . . . . . . . . . . . . . . . . . . . .  30
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  30
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  30
   6.  Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .  30
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  30
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  30
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  31
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  31

1.  Introduction

   This document is based on the terminology defined in the
   [I-D.ietf-rats-architecture] and uses the interaction model and
   information elements defined in the
   [I-D.birkholz-rats-reference-interaction-model] document.  The
   currently supported hardware security modules (HWM) - sometimes also
   referred to as an embedded secure element (eSE) - is the Trusted
   Platform Module (TPM) version 1.2 and 2.0 specified by the Trusted
   Computing Group (TCG).  One ore more TPMs embedded in the components
   of a composite device - sometimes also referred to as an aggregate
   device - are required in order to use the YANG module defined in this
   document.  A TPM is used as a root of trust for reporting (RTR) in
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