A Concise Binary Object Representation (CBOR)-based Serialization Format for the Software Updates for Internet of Things (SUIT) Manifest
draft-ietf-suit-manifest-04
SUIT B. Moran
Internet-Draft H. Tschofenig
Intended status: Standards Track Arm Limited
Expires: September 10, 2020 H. Birkholz
Fraunhofer SIT
K. Zandberg
Inria
March 09, 2020
A Concise Binary Object Representation (CBOR)-based Serialization Format
for the Software Updates for Internet of Things (SUIT) Manifest
draft-ietf-suit-manifest-04
Abstract
This specification describes the format of a manifest. A manifest is
a bundle of metadata about the firmware for an IoT device, where to
find the firmware, the devices to which it applies, and cryptographic
information protecting the manifest. Firmware updates and trusted
boot both tend to use sequences of common operations, so the manifest
encodes those sequences of operations, rather than declaring the
metadata.
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
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
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 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
Provisions Relating to IETF Documents
Moran, et al. Expires September 10, 2020 [Page 1]
Internet-Draft SUIT CBOR Manifest March 2020
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Conventions and Terminology . . . . . . . . . . . . . . . . . 5
3. How to use this Document . . . . . . . . . . . . . . . . . . 6
4. Background . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1. IoT Firmware Update Constraints . . . . . . . . . . . . . 7
4.2. Update Workflow Model . . . . . . . . . . . . . . . . . . 7
4.2.1. Pre-Authentication Compatibility Checks . . . . . . . 9
4.3. SUIT Manifest Goals . . . . . . . . . . . . . . . . . . . 9
4.4. SUIT Manifest Design Summary . . . . . . . . . . . . . . 10
5. Interpreter Behavior . . . . . . . . . . . . . . . . . . . . 11
5.1. Interpreter Setup . . . . . . . . . . . . . . . . . . . . 11
5.2. Required Checks . . . . . . . . . . . . . . . . . . . . . 12
5.3. Interpreter Fundamental Properties . . . . . . . . . . . 13
5.4. Abstract Machine Description . . . . . . . . . . . . . . 13
5.4.1. Parameters . . . . . . . . . . . . . . . . . . . . . 14
5.4.2. Commands . . . . . . . . . . . . . . . . . . . . . . 15
5.4.3. Command Behavior . . . . . . . . . . . . . . . . . . 16
5.5. Serialized Processing Interpreter . . . . . . . . . . . . 17
5.6. Parallel Processing Interpreter . . . . . . . . . . . . . 17
5.7. Processing Dependencies . . . . . . . . . . . . . . . . . 18
Show full document text