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Re: [kitten] spaces in SASL user names

Simon Josefsson <simon@josefsson.org> Wed, 11 April 2012 07:01 UTC

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From: Simon Josefsson <simon@josefsson.org>
To: Peter Saint-Andre <stpeter@stpeter.im>
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Date: Wed, 11 Apr 2012 09:01:19 +0200
In-Reply-To: <4F84AAA5.3030104__43291.804000228$1334094511$gmane$org@stpeter.im> (Peter Saint-Andre's message of "Tue, 10 Apr 2012 15:48:21 -0600")
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Cc: "kitten@ietf.org" <kitten@ietf.org>
Subject: Re: [kitten] spaces in SASL user names
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Peter Saint-Andre <stpeter@stpeter.im> writes:

> At the PRECIS WG session in Paris, we had quite a discussion about
> spaces in user names. Alexey maintained that this must have been
> included in SASLprep (RFC 4013) for a good reason, but the reason
> wasn't clear to folks in the meeting. So I have a few questions:
>
> 1. Do SASL user names really need to include spaces?

I have seen real human names used for authentication identifiers more
than once, so I believe the answer is yes.

/Simon

> 2. If SASL user names do *not* need to include spaces, would it be
> fine to re-use the PRECIS NameClass for simple user names in SASL?
>
> 3. If SASL user names *do* need to include spaces, would it be fine to
> define simple user names in SASL as a space-separated list of
> NameClass entities?
>
> Option #3 seems preferable to (a) specifying that the PRECIS NameClass
> needs to include space (to which there was a lot of resistance during
> the PRECIS WG session), (b) enabling folks to superclass PRECIS string
> classes (to which there was also a lot of resistance), or (c) severely
> subclassing the PRECIS FreeClass to be something like NameClass+SP.
>
> Peter

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