Reference Integrity Measurement Extension for Concise Software Identities
draft-birkholz-rats-coswid-rim-00

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RATS Working Group                                           H. Birkholz
Internet-Draft                                            Fraunhofer SIT
Intended status: Standards Track                            P. Uiterwijk
Expires: September 10, 2020                                      Red Hat
                                                     J. Fitzgerald-McKay
                                                   Department of Defense
                                                           D. Waltermire
                                                                    NIST
                                                          March 09, 2020

     Reference Integrity Measurement Extension for Concise Software
                               Identities
                   draft-birkholz-rats-coswid-rim-00

Abstract

   Concise Software Identification (CoSWID) tags identify and describe
   individual software components, patches, and installation bundles.
   CoSWID is based on ISO/IEC 19770-2:2015 2:2015 that provides a
   complementary XML schema definition (XSD) for Software Identification
   (SWID) tags.  CoSWID supports the same features as the corresponding
   XML SWID tags.  The CoSWID specification also includes more
   structured extensibility features and reduces a few of ambiguities
   that are not explicitly resolved in the ISO XSD.  In this document,
   these extensibility features (extension points) are used to add
   attributes to the CoSWID specification.  The new attributes allow for
   the use of CoSWID as Reference Integrity Measurements (RIM).  There
   are three set of RIM features defined in this specification. 1.)
   attributes that support RIM manifests for Measured Boot, 2.)
   attributes that support package manager managed structures, and 3.)
   attributes that allow for OID to be used in the description of
   Reference Integrity Measurements.

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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Birkholz, et al.       Expires September 10, 2020               [Page 1]
Internet-Draft                 CoSWID RIM                     March 2020

   This Internet-Draft will expire on September 10, 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Notation . . . . . . . . . . . . . . . . . .   4
   2.  CoSWID Attribute Extensions . . . . . . . . . . . . . . . . .   4
     2.1.  RIM requirements on existing CoSWID attributes  . . . . .   4
     2.2.  RIM extensions for Measured Boot  . . . . . . . . . . . .   5
     2.3.  RIM extension for Software Package Management . . . . . .  10
     2.4.  Additional Measurement Attributes for CoSWID  . . . . . .  11
     2.5.  CoSWID RIM CDDL . . . . . . . . . . . . . . . . . . . . .  11
   3.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  13
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     5.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   Reference Integrity Measurements describe the intended state of
   (composite) software components installed on a (composite) device.  A
   measurement of all installed software components of a devices allows
   for assertions about the trustworthiness of the given device.  In
   combination with a root of trust (RoT) for reporting (RTM), these
   measurements can be refined into evidence and enable IETF Remote
   Attestation ProcedureS (RATS).  RATS support the decision process of