Subject: [COSE] FW: New Version Notification for draft-mattsson-cose-cbor-cert-compress-04.txt

From: John Mattsson <[email-masked]>
Date: Tue, 24 Nov 2020 09:53:48 +0000

Changes between -03 and -04

We updated the document based on the comments recieved during the IETF 109 WG meeting including Carsten, Russ, Stefan, Benjamin, Olle, Fraser, etc.

- unwrapped CBOR positive bignum (~biguint) used for serialnumber and validity
- Use draft-ietf-cbor-tags-oid for OIDs, which are no longer called relative.
- Fixed ambiguity with hex. Draft now only compresses EUI-64 with capital letters of the form "HH-HH-HH-HH-HH-HH-HH-HH"
- Removed the single array in issuer optimization
- Removed several extension optimization as a simplification.
- Added "v3" in several places 
- Added id-at-organizationIdentifier
- Added support of OtherName
- Added a note that certificates can be identified with 'kid' by storing them in a dictionary.
- Added reference to ietf-tls-certificate-compression
- Editorial fixes

Note that these changes does not increase the size of the constrained example certificate.

Other comments have been turned into issues on GitHub
https://github.com/EricssonResearch/CBOR-certificates

Cheers,
John

-----Original Message-----
From: "[email-masked]" <[email-masked]>
Date: Tuesday, 24 November 2020 at 10:48
To: Göran Selander <[email-masked]>, Joel Hoglund <[email-masked]>, John Mattsson <[email-masked]>, John Mattsson <[email-masked]>, Göran Selander <[email-masked]>, Shahid Raza <[email-masked]>, Joel Höglund <[email-masked]>, Martin Furuhed <[email-masked]>
Subject: New Version Notification for draft-mattsson-cose-cbor-cert-compress-04.txt

A new version of I-D, draft-mattsson-cose-cbor-cert-compress-04.txt
has been successfully submitted by =?utf-8?q?John_Preu=C3=9F_Mattsson?= and posted to the
IETF repository.

Name:		draft-mattsson-cose-cbor-cert-compress
Revision:	04
Title:		CBOR Encoding of X.509 Certificates (CBOR Certificates)
Document date:	2020-11-24
Group:		Individual Submission
Pages:		28
URL:            https://www.ietf.org/archive/id/draft-mattsson-cose-cbor-cert-compress-04.txt
Status:         https://datatracker.ietf.org/doc/draft-mattsson-cose-cbor-cert-compress/
Htmlized:       https://datatracker.ietf.org/doc/html/draft-mattsson-cose-cbor-cert-compress
Htmlized:       https://tools.ietf.org/html/draft-mattsson-cose-cbor-cert-compress-04
Diff:           https://www.ietf.org/rfcdiff?url2=draft-mattsson-cose-cbor-cert-compress-04

Abstract:
   This document specifies a CBOR encoding of PKIX profiled X.509
   Certificates.  The resulting certificates are called "CBOR
   certificates".  The CBOR encoding supports a large subset of RFC
   5280, while at the same time producing very small sizes for
   certificates compatible with RFC 7925.  The CBOR encoding can be used
   to compress DER encoded X.509 certificates and to encode natively
   signed certificates.  When uses to compress DER encoded X.509
   certificates, the CBOR encoding can in many cases compress RFC 7925
   profiled certificates with over 50%. The document also specifies COSE
   headers for CBOR certificates as well as a TLS certificate type for
   CBOR certificates.

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