Roland:

Thanks for the update.  In addition to the changes that I requested, you added:

   The extnValue of the id-pe-acmeIdentifier extension is the ASN.1 DER
   encoding of the Authorization structure.

Authorization is just an OCTET STRING.  For clarity, it might be useful to say:

   The extnValue of the id-pe-acmeIdentifier extension is the ASN.1 DER
   encoding of the Authorization structure, which contains the SHA-256
   digest of the key authorization for the challenge.

Russ


> On Aug 15, 2018, at 2:37 PM, [email protected] wrote:
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts 
> directories.
> This draft is a work item of the Automated Certificate Management Environment 
> WG of the IETF.
> 
>        Title           : ACME TLS ALPN Challenge Extension
>        Author          : Roland Bracewell Shoemaker
>       Filename        : draft-ietf-acme-tls-alpn-04.txt
>       Pages           : 8
>       Date            : 2018-08-15
> 
> Abstract:
>   This document specifies a new challenge for the Automated Certificate
>   Management Environment (ACME) protocol which allows for domain
>   control validation using TLS.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-acme-tls-alpn/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-acme-tls-alpn-04
> https://datatracker.ietf.org/doc/html/draft-ietf-acme-tls-alpn-04
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-acme-tls-alpn-04
> 
> 
> 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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> [email protected]
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