Reference Terminology for Remote Attestation Procedures
draft-birkholz-attestation-terminology-02

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Network Working Group                                        H. Birkholz
Internet-Draft                                            Fraunhofer SIT
Intended status: Informational                                M. Wiseman
Expires: January 3, 2019                              GE Global Research
                                                           H. Tschofenig
                                                                ARM Ltd.
                                                           July 02, 2018

        Reference Terminology for Remote Attestation Procedures
               draft-birkholz-attestation-terminology-02

Abstract

   This document is intended to illustrate and remediate the impedance
   mismatch of terms related to remote attestation procedures used in
   different domains today.  New terms defined by this document provide
   a consolidated basis to support future work on attestation procedures
   in the IETF and beyond.

Status of This Memo

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

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   This Internet-Draft will expire on January 3, 2019.

Copyright Notice

   Copyright (c) 2018 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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   (https://trustee.ietf.org/license-info) in effect on the date of
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Birkholz, et al.         Expires January 3, 2019                [Page 1]
Internet-Draft              RATS Terminology                   July 2018

   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements notation . . . . . . . . . . . . . . . . . .   4
   2.  Basic Roles of RATS . . . . . . . . . . . . . . . . . . . . .   4
   3.  Computing Context . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Formal Semantic Relationships . . . . . . . . . . . . . .   5
     3.2.  Characteristics of a Computing Context  . . . . . . . . .   6
   4.  Computing Context Identity  . . . . . . . . . . . . . . . . .   7
   5.  Attestation Workflow  . . . . . . . . . . . . . . . . . . . .   7
   6.  Reference Use Cases . . . . . . . . . . . . . . . . . . . . .   8
     6.1.  The Lying Endpoint Problem  . . . . . . . . . . . . . . .  10
     6.2.  Who am I a talking to?  . . . . . . . . . . . . . . . . .  11
   7.  Trustworthiness . . . . . . . . . . . . . . . . . . . . . . .  11
   8.  Remote Attestation  . . . . . . . . . . . . . . . . . . . . .  12
     8.1.  Building Block Terms  . . . . . . . . . . . . . . . . . .  12
   9.  IANA considerations . . . . . . . . . . . . . . . . . . . . .  13
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  13
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  13
   12. Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .  13
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     13.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  14

1.  Introduction

   During its evolution, the term Remote Attestation has been used in
   multiple contexts and multiple scopes and in consequence accumulated
   various connotations with slightly different semantic meaning.
   Correspondingly, Remote Attestation Procedures (RATS) are employed in
   various usage scenarios and different environments.

   In order to better understand and grasp the intend and meaning of
   specific RATS in the scope of the security area - including the
   requirements that are addressed by them - this document provides an
   overview of existing work, its background, and common terminology.
   As the contribution, from that state-of-the-art a set of terms that
   provides a stable basis for future work on RATS in the IETF is
   derived.

   The primary application of RATS is to increase the trust and
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