Re: [precis] Gen-art last call review of draft-ietf-precis-7613bis-07

[Peter Saint-Andre - Filament <[e-mail]>]

Hi Linda,

Thanks for your review. Comments inline.

On 6/26/17 4:53 PM, Linda Dunbar wrote:
>  
> Reviewer: Linda Dunbar
> Review result: Ready
>  
> I am the assigned Gen-ART reviewer for this draft. The General Area
> Review Team (Gen-ART) reviews all IETF documents being processed by the
> IESG for the IETF Chair.  Please treat these comments just like any
> other last call comments.
>  
> For more information, please see the FAQ at
>  
> <https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.
>  
> Document: draft-ietf-precis-7613bis
> Reviewer: Linda Dunbar
> Review Date: 2017-06-25
> IETF LC End Date: 2017-06-27
> IESG Telechat date: 2017-07-06
>  
> Summary:
> The document is written very clear. Even for a person who is not
> familiar with the App area, I can follow through the description. The
> document is ready for publication as standard track document Major issues:
>  
> One Minor issue:
>  
> Page 6 last paragraph has:
> /SASL mechanisms SHOULD delay any case////mapping to the last possible
> moment, such as when doing a lookup////by username, performing username
> comparisons, or generating a////cryptographic salt from a username (if
> the last possible moment////happens on the server, then decisions about
> case mapping can be a////matter of deployment policy). In keeping with
> [RFC4422], SASL////mechanisms are not to apply this or any other profile
> to////authorization identifiers, only to authentication identifiers./
>  
> What does "last possible moment" mean? When I read it, I thought it
> meant wait until you got all the characters. But the next sentence
> mentions "..happens on the server". How is the "server" related to the
> entity that check the user name & password? 

Many authentication decisions happen on an application server to which a
user-oriented client connects (think of an email client connecting to an
email server). By "last possible moment" we're referring to processing
within the application server or an authentication module thereof - for
instance, instead of performing case mapping on first receiving data
from the client (thus implying that the case information is lost through
most of the processing stages), it's better to lose that information
only at the very end. Do you feel it would it help to add a more
detailed description of the reasoning here?

Peter

-- 
Peter Saint-Andre
https://filament.com/