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Re: Unicode string profiles for LDAP
Mark Wahl wrote:
>
> "Kurt D. Zeilenga" wrote:
> >
> > space: character string matching rules ignore "insignificant"
> > spaces. We need to define which code points are considered spaces.
> > We likely should map all spaces to SPACE (U+00020) on input.
>
> I remember we looked at this issue several years ago when trying to come up
> with conformance tests for LDAPv3. Did ITU-T identify a list of 'space'
> characters in one of the updates or defect resolutions for X.500? If not
> I can track down my table...
>
Unfortunately not. The only rules for the handling of space characters
are:
In the matching rules specified in 6.1.1 through 6.1.11, the following
spaces are regarded as not significant:
- leading spaces (i.e. those preceding the first character that is
not a
space);
- trailing spaces (i.e. those following the last character that is
not a
space);
- multiple consecutive spaces (these are taken as equivalent to a
single
space character).
A string consisting entirely of spaces is equivalent to a string
containing exactly one space.
In the matching rules to which these apply, the strings to be matched
shall be matched as if the insignificant spaces were not present in
either string.
But no definition of the codes that equate to spaces.
David
> Mark Wahl
> Sun Microsystems Inc.
--
*****************************************************************
David W. Chadwick, BSc PhD
Professor of Information Systems Security
IS Institute, University of Salford, Salford M5 4WT
Tel: +44 161 295 5351 Fax +44 161 745 8169
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Email: D.W.Chadwick@salford.ac.uk
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Research Projects: http://sec.isi.salford.ac.uk
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