Re: [secdir] SECDIR review of draft-ietf-httpauth-hoba-08.txt

Stephen Farrell <stephen.farrell@cs.tcd.ie> Tue, 30 December 2014 22:09 UTC

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Date: Tue, 30 Dec 2014 22:09:02 +0000
From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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To: Barry Leiba <barryleiba@computer.org>
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Subject: Re: [secdir] SECDIR review of draft-ietf-httpauth-hoba-08.txt
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Hiya,

On 30/12/14 19:48, Barry Leiba wrote:
> On just a couple of points...
> 
>>> Page 6/7/13, Figure 1/2/3: I'm not sure that something that is
>>> entirely textural is best called a "Figure". But in any case, since
>>> the text is, or at least has, lines that are flush left, it looks like
>>> part of the preceding text and there isn't a clear demarcation of the
>>> start. I recommend that the body of the Figures be indented 3 or 4
>>> spaces.
>>
>> I'd prefer let the RFC editor fix those if needed.
> 
> I think that if we think a change in the formatting would make things
> clearer, we should do that ourselves, and not defer it to the RFC
> Editor.  *We* should be happy with the document before we send it
> over.

I figure this is such a minor change that we are actually happy,
even if we might also like to nitpick ourselves unhappy from time
to time;-)

> 
>>> Page 19, IANA Considerations: It seems from
>>> draft-leiba-coton-iana-5226bis that IANA would prefer IANA
>>> Considerations to be written in the past tense as if the actions had
>>> already been accomplished, presumably to minimize IANA re-writing
>>> effort. Thus, I suggest that consideration be given to changing the
>>> initial part, between the Section 9 heading and the Section 9.1
>>> heading, to the following and making similar changes in the remainder
>>> of the IANA Considerations Section:
> 
> I'm with Stephen here: please leave this alone.  At this point, the
> document is making a request, and that's a fine way to put it.
> 
>>> Page 20, Section 9.4: Suggest the "Meaning" for 2 be "an unformatted
>>> UTF8 string". There should probably be a Reference column. "a small
>>> positive integer" is undefined.
>>
>> Oh come on. Small positive integer utterly clear as is unformatted
>> string in this context. UTF8 isn't needed here as this is not meant
>> to be seen by a user.
> 
> With this and all other strings, the question isn't whether users are
> going to see it or not, but how implementors are supposed to know what
> a "string" is and how to create it.  

In these cases coders look @ the IANA registry to find the string
in question. If IANA, and some expert, manage to muck up that badly
then I suspect we have worse problems. I only agreed with the UTF8
addition in the did case as I could see that being presented to a
user as a "you last logged in from a &^%SS device on Tuesday" so
there's a chance that a non ASCII string might be worthwhile there.
For a kid type (not kid, but a kid type) that's just not worth even
these electrons, even if it appears to bear all the markings of a
good i18n bunfight:-)

Neither string is ever sent in the HOBA protocol itself.

S.

> If it's an arbitrary sequence of
> bytes, then it should say that, rather than "string".  If it's really
> a string and is meant to represent characters in some encoding system,
> then it needs to say either what encoding system that is (UTF-8,
> US-ASCII, or whatever) or that it doesn't matter and that any encoding
> can be used.  The latter only works if the string is never consumed by
> an entity other than the one that created it.
> 
> Barry
>