-----Original Message-----
From: Martin Duke via Datatracker <[email protected]> 
Sent: Tuesday, June 9, 2020 10:23 PM
To: The IESG <[email protected]>
Cc: [email protected]; [email protected]; 
[email protected]; Matthew Miller <[email protected]>; 
[email protected]
Subject: Martin Duke's No Objection on draft-ietf-cose-rfc8152bis-algs-09: 
(with COMMENT)

Martin Duke has entered the following ballot position for
draft-ietf-cose-rfc8152bis-algs-09: No Objection

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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

As everyone else has pointed out, the header needs to be fixed to indicate this 
is Informational, not Standards Track.

Section 1.
s/messages transport/message transport
s/of the Javascript/of Javascript
[JLS] Done.

Sec 1.3
In the definitions of “AE” and “AEAD”, I don’t understand the functional 
difference between authentication of “plaintext contents” (AE) and 
authentication of “non-encrypted data” (AEAD). AFAICT AE isn’t actually used in 
the document, so it might be easiest to simply delete it.
[JLS]  I have updated the text to read as follows, does that make it clearer?

Authenticated Encryption (AE) <xref target="RFC5116"/> algorithms are 
encryption algorithms that provide an authentication check of the contents 
algorithm with the encryption service.  An example of an AE algorithm used in 
COSE is AES Key Wrap <xref target="RFC3394"/>.  These algorithms are used for 
key encryption algorithms, but AEAD algorithms would be preferred.

Authenticated Encryption with Associated Data (AEAD) <xref target="RFC5116"/> 
algorithms provide the same authentication service of the content as AE 
algorithms do.   They also allow for associated data to be included in the 
authentication service, but which is not part of the encrypted body.    An 
example of an AEAD algorithm used in COSE is AES-GCM <xref target="RFC5116"/>.  
  These algorithms are used for content encryption and can be used for key 
encryption as well.


Sec 1.5. Replace the URL with a reference.
[JLS] Fixed.

I actually read this whole document but got pretty lost by the end, not being 
an expert in this area.




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