Concise Software Identification Tags
draft-ietf-sacm-coswid-13

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SACM Working Group                                           H. Birkholz
Internet-Draft                                            Fraunhofer SIT
Intended status: Standards Track                     J. Fitzgerald-McKay
Expires: May 20, 2020                              Department of Defense
                                                              C. Schmidt
                                                   The MITRE Corporation
                                                           D. Waltermire
                                                                    NIST
                                                       November 17, 2019

                  Concise Software Identification Tags
                       draft-ietf-sacm-coswid-13

Abstract

   ISO/IEC 19770-2:2015 Software Identification (SWID) tags provide an
   extensible XML-based structure to identify and describe individual
   software components, patches, and installation bundles.  SWID tag
   representations can be too large for devices with network and storage
   constraints.  This document defines a concise representation of SWID
   tags: Concise SWID (CoSWID) tags.  CoSWID supports the same features
   as SWID tags, as well as additional semantics that allow CoSWIDs to
   describe additional types of information, all in a more memory
   efficient format.

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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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 20, 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Birkholz, et al.          Expires May 20, 2020                  [Page 1]
Internet-Draft                   CoSWID                    November 2019

   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
   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  The SWID and CoSWID Tag Lifecycle . . . . . . . . . . . .   4
     1.2.  Concise SWID Format . . . . . . . . . . . . . . . . . . .   7
     1.3.  Requirements Notation . . . . . . . . . . . . . . . . . .   7
   2.  Concise SWID Data Definition  . . . . . . . . . . . . . . . .   7
     2.1.  Character Encoding  . . . . . . . . . . . . . . . . . . .   8
     2.2.  Concise SWID Extensions . . . . . . . . . . . . . . . . .   9
     2.3.  The concise-swid-tag Group  . . . . . . . . . . . . . . .  11
     2.4.  concise-swid-tag Co-constraints . . . . . . . . . . . . .  15
     2.5.  The global-attributes Group . . . . . . . . . . . . . . .  16
     2.6.  The entity-entry Group  . . . . . . . . . . . . . . . . .  17
     2.7.  The link-entry Map  . . . . . . . . . . . . . . . . . . .  18
     2.8.  The software-meta-entry Map . . . . . . . . . . . . . . .  22
     2.9.  The Resource Collection Definition  . . . . . . . . . . .  26
       2.9.1.  The hash-entry Array  . . . . . . . . . . . . . . . .  26
       2.9.2.  The resource-collection Group . . . . . . . . . . . .  26
       2.9.3.  The payload-entry Group . . . . . . . . . . . . . . .  29
       2.9.4.  The evidence-entry Group  . . . . . . . . . . . . . .  30
     2.10. Full CDDL Definition  . . . . . . . . . . . . . . . . . .  30
   3.  Determining the Type of CoSWID  . . . . . . . . . . . . . . .  36
   4.  CoSWID Indexed Label Values . . . . . . . . . . . . . . . . .  37
     4.1.  Version Scheme  . . . . . . . . . . . . . . . . . . . . .  37
     4.2.  Entity Role Values  . . . . . . . . . . . . . . . . . . .  38
     4.3.  Link Ownership Values . . . . . . . . . . . . . . . . . .  39
     4.4.  Link Rel Values . . . . . . . . . . . . . . . . . . . . .  40
     4.5.  Link Use Values . . . . . . . . . . . . . . . . . . . . .  42
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  43
     5.1.  CoSWID Items Registry . . . . . . . . . . . . . . . . . .  43
     5.2.  SWID/CoSWID Value Registries  . . . . . . . . . . . . . .  46