[rdfweb-dev] SHA1 property values for privacy using RDF datatypes

Dave Beckett dave.beckett at bristol.ac.uk
Fri Aug 15 10:43:48 UTC 2003


I had this quick thought, rather than repeating the
    <foaf:mbox_sha1sum>970987f991961f2553a1bf2574166fa29befbccb</foaf:mbox_sha1sum>
idea for other properties that need obfuscating for privacy, you don't
need to do that, but can just use datatyped literals:

   <foaf:tel rdf:datatype="&md5url;">237d72c1c264721f96ce08881b0b72db6ff0a616</foaf:tel>

which uses the datatype to tell the RDF systems it was SHA1
(ie an encoding schem, in Dublin Core terms)

Just a thought, it would be handy to prevent property proliferation in FOAF.

PLUG: By the way, the above should "just work" right now in my Redland
RDF system (as used by Edd's foafbot) which does datatyped literals and
handles consistently as the plain literals like in foaf:mbox_sha1sum.

Dave



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