Re: [dane] Start of WGLC for draft-ietf-dane-openpgpkey - *please* review.

[Viktor Dukhovni <[e-mail]>]

On Sun, Feb 22, 2015 at 07:34:53PM -0800, Jim Schaad wrote:

> 4.  In section 3, I strongly urge that the problem of case folding of user
> names be acknowledged.   I don't insist that the problem be solved.  (I
> believe that it is not really solvable.)  However I strongly field that the
> existence of the problem needs to be stated along with the fact that there
> is no intention to solve it.   The problem statement can also easily state
> that this is a problem ONLY for US ASCII systems and not for UNICODE systems
> as these are less likely to allow for case folding in the first place.
> (Does not need to be in section 3, but that seems to be the logical place to
> put it.)

The problem *is* solvable.  Case-insensitive receiving domains,
could publish a case-folded version of the user name (hashed with
a tag that prevents collisions in other domains, I proposed a
concrete scheme some months back).  Senders could for the
unmodified lookup key, and then for the tagged case-folded
key.

The main question is whether we can reach consensus on wanting to
solve it (for OPENPGPKEY and SMIMEA alike).  Solving is the easy
part.

-- 
	Viktor.