Comments on this version of the draft.
Section 7 - Step 6 & 7 - I do not know if it is legal to have a CWT CBOR tag at
this point
Section 7 - In Step 7 - it must be a valid CBOR map not just a valid CBOR
object.
Appendix A.3 - I was unable to reproduce the example. I assume that this means
that a deterministic signature algorithm is not being used. While a verifier
cannot tell if one is being used, the COSE document does strongly suggest that
one be used. Additionally, it helps in testing if one is used so that a
signature creator can be more easily tested.
Appendix A.5 - I was unable to reproduce the example. Specially the tag value
does not match with the one that I compute.
Appendix A.6 - I did not try to reproduce given that a) I would not generate
the same signature and b) the example A.5 failed.
Minor:
In section 1.1 s/In COSE/In CBOR/ - this is a comment on CBOR not on COSE
In section 2: s/CBOR encoded claim key/CBOR claim key/
* I am unsure why you would think that encoded is needed here.
* Should this be CWT rather than CBOR?
* Why is section 3.1 "Claim Names" rather than "Claim Keys"
In section 2: Is there a reason not to define CWT claim value in this section
In section 3.1.1 and on - the following might be considered cleaner s/except
that the format MUST be a/except that the value MUST be of type/
Section 9.1.2 - I would suggest assigning a name to the reserved entry
-----Original Message-----
From: Ace [mailto:ace-boun...@ietf.org] On Behalf Of internet-dra...@ietf.org
Sent: Monday, June 5, 2017 6:27 PM
To: i-d-annou...@ietf.org
Cc: ace@ietf.org
Subject: [Ace] I-D Action: draft-ietf-ace-cbor-web-token-05.txt
A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Authentication and Authorization for
Constrained Environments of the IETF.
Title : CBOR Web Token (CWT)
Authors : Michael B. Jones
Erik Wahlström
Samuel Erdtman
Hannes Tschofenig
Filename : draft-ietf-ace-cbor-web-token-05.txt
Pages : 23
Date : 2017-06-05
Abstract:
CBOR Web Token (CWT) is a compact means of representing claims to be
transferred between two parties. The claims in a CWT are encoded in
the Concise Binary Object Representation (CBOR) and CBOR Object
Signing and Encryption (COSE) is used for added application layer
security protection. A claim is a piece of information asserted
about a subject and is represented as a name/value pair consisting of
a claim name and a claim value. CWT is derived from JSON Web Token
(JWT), but uses CBOR rather than JSON.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ace-cbor-web-token/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-ace-cbor-web-token-05
https://datatracker.ietf.org/doc/html/draft-ietf-ace-cbor-web-token-05
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ace-cbor-web-token-05
Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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