Time-Based Uni-Directional Attestation
draft-birkholz-rats-tuda-00

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Network Working Group                                           A. Fuchs
Internet-Draft                                               H. Birkholz
Intended status: Informational                            Fraunhofer SIT
Expires: September 13, 2019                                  I. McDonald
                                                          High North Inc
                                                              C. Bormann
                                                 Universitaet Bremen TZI
                                                          March 12, 2019

                 Time-Based Uni-Directional Attestation
                      draft-birkholz-rats-tuda-00

Abstract

   This memo documents the method and bindings used to conduct time-
   based uni-directional attestation between distinguishable endpoints
   over the network.

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
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 13, 2019.

Copyright Notice

   Copyright (c) 2019 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
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   include Simplified BSD License text as described in Section 4.e of

Fuchs, et al.          Expires September 13, 2019               [Page 1]
Internet-Draft                    tuda                        March 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Remote Attestation  . . . . . . . . . . . . . . . . . . .   4
     1.2.  Evidence Creation . . . . . . . . . . . . . . . . . . . .   5
     1.3.  Evidence Appraisal  . . . . . . . . . . . . . . . . . . .   5
     1.4.  Activities and Actions  . . . . . . . . . . . . . . . . .   5
     1.5.  Attestation and Verification  . . . . . . . . . . . . . .   6
     1.6.  Information Elements and Conveyance . . . . . . . . . . .   6
     1.7.  TUDA Objectives . . . . . . . . . . . . . . . . . . . . .   7
     1.8.  Hardware Dependencies . . . . . . . . . . . . . . . . . .   7
     1.9.  Requirements Notation . . . . . . . . . . . . . . . . . .   7
   2.  TUDA Core Concept . . . . . . . . . . . . . . . . . . . . . .   8
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.1.  Universal Terms . . . . . . . . . . . . . . . . . . . . .   9
     3.2.  Roles . . . . . . . . . . . . . . . . . . . . . . . . . .  10
       3.2.1.  General Types . . . . . . . . . . . . . . . . . . . .  11
       3.2.2.  RoT specific terms  . . . . . . . . . . . . . . . . .  11
     3.3.  Certificates  . . . . . . . . . . . . . . . . . . . . . .  11
   4.  Time-Based Uni-Directional Attestation  . . . . . . . . . . .  11
     4.1.  TUDA Information Elements Update Cycles . . . . . . . . .  13
   5.  Sync Base Protocol  . . . . . . . . . . . . . . . . . . . . .  15
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   8.  Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .  16
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  17
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  17
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  17
     10.2.  Informative References . . . . . . . . . . . . . . . . .  17
   Appendix A.  REST Realization . . . . . . . . . . . . . . . . . .  21
   Appendix B.  SNMP Realization . . . . . . . . . . . . . . . . . .  21
     B.1.  Structure of TUDA MIB . . . . . . . . . . . . . . . . . .  22
       B.1.1.  Cycle Index . . . . . . . . . . . . . . . . . . . . .  22
       B.1.2.  Instance Index  . . . . . . . . . . . . . . . . . . .  22
       B.1.3.  Fragment Index  . . . . . . . . . . . . . . . . . . .  22
     B.2.  Relationship to Host Resources MIB  . . . . . . . . . . .  23
     B.3.  Relationship to Entity MIB  . . . . . . . . . . . . . . .  23