W3C home > Mailing lists > Public > public-xg-webid@w3.org > November 2011

Re: include privat ekeys Re: rsa ontology in cert namespace

From: Mischa Tuffield <mischa@mmt.me.uk>
Date: Fri, 25 Nov 2011 09:47:11 +0000
Message-Id: <DCDD7C4F-BD17-45F8-B22A-0849CE9C0892@mmt.me.uk>
Cc: Peter Williams <home_pw@msn.com>, "public-xg-webid@w3.org" <public-xg-webid@w3.org>
To: Mo McRoberts <mo.mcroberts@bbc.co.uk>
Comments inline :

-Mischa's phone

On Nov 23, 2011, at 7:00 PM, Mo McRoberts <mo.mcroberts@bbc.co.uk> wrote:

> On 23 Nov 2011, at 18:42, Peter Williams wrote:
>> Stop calling a "cert" ontology too, since it precious little to do with certificates - as anyone understands the term. The bindings are not signed, and in RDF land show no sign of being signed in the next decade. 
> +1
> People have enough trouble understanding the difference between certificates and keys as it is.
> (RDF signing is nontrivial, because ideally you want to sign the graph, not the specific serialisation; in order to sign, you need consistent ordering of triples, and the only way you can order triples with bnodes as the subject is by their content… arriving at a consistent a graph consisting solely of bnodes isn't entirely straightforward, particularly if there are any referencing 'loops').

The signing of a given RDF document (g-text) makes perfect sense to me, especially when the use case is signing some triples and sending/receiving them across the wire. Or am I missing something? I recon that XML signing is both widely supported and established in the community. Saying that I agree that rdfxml is not the most elegant serialisation...

The current RDF WG have talked about and are working on a method to skolemise bnodes [1]. This should allow for triples to be sorted and signed in a straightforward manner. HEAD of the 4store repo supports this fwiw.

[1] http://www.w3.org/2011/rdf-wg/wiki/Skolemisation 

Note that in ^^ the term that people agreed upon was : .well-known/genid/ not /steveH/. Must update the wiki at some point.

> M.
> -- 
> Mo McRoberts - Technical Lead - The Space,
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Received on Friday, 25 November 2011 09:48:14 UTC

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