Reference Integrity Measurement Extension for Concise Software Identities
draft-birkholz-rats-coswid-rim-01
RATS Working Group H. Birkholz
Internet-Draft Fraunhofer SIT
Intended status: Standards Track P. Uiterwijk
Expires: January 14, 2021 Red Hat
N. Smith
Intel
J. Fitzgerald-McKay
Department of Defense
D. Waltermire
NIST
S. Bhandari
Cisco
July 13, 2020
Reference Integrity Measurement Extension for Concise Software
Identities
draft-birkholz-rats-coswid-rim-01
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 four sets of RIM features defined in this specification. 1.)
attributes that support RIM manifests for Measured Boot, 2.)
attributes that support package manager managed structures, 3.)
attributes that allow for OID to be used in the description of
Reference Integrity Measurements, and 4.) attributes for object trees
in support of Target Environments that are chained via Layered
Attestation.
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
Birkholz, et al. Expires January 14, 2021 [Page 1]
Internet-Draft CoSWID RIM July 2020
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This Internet-Draft will expire on January 14, 2021.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Requirements Notation . . . . . . . . . . . . . . . . . . 4
2. CoSWID Attribute Extensions . . . . . . . . . . . . . . . . . 5
2.1. RIM requirements on existing CoSWID attributes . . . . . 5
2.2. RIM Extensions for Measured Boot . . . . . . . . . . . . 5
2.3. RIM Extensions for Software Package Management . . . . . 11
2.4. RIM Extensions for Composite Device . . . . . . . . . . . 12
2.4.1. The tcb-info Group . . . . . . . . . . . . . . . . . 12
2.4.2. CoSWID Version Scheme for RPM . . . . . . . . . . . . 14
2.5. Additional Measurement Attributes for CoSWID . . . . . . 14
2.6. CoSWID RIM CDDL . . . . . . . . . . . . . . . . . . . . . 14
3. Privacy Considerations . . . . . . . . . . . . . . . . . . . 17
4. Security Considerations . . . . . . . . . . . . . . . . . . . 18
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
6. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
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