W3C home > Mailing lists > Public > public-xg-webid@w3.org > January 2012

Re: Matter of DN and what's possible

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Mon, 09 Jan 2012 21:20:20 -0500
Message-ID: <4F0BA064.1050308@openlinksw.com>
To: public-xg-webid@w3.org
On 1/9/12 6:35 PM, Henry Story wrote:
> On 10 Jan 2012, at 00:28, Kingsley Idehen wrote:
>
>> On 1/9/12 6:21 PM, Henry Story wrote:
>>> On 10 Jan 2012, at 00:15, Jürgen Jakobitsch wrote:
>>>
>>>> henry wrote :
>>>>
>>>> yes. as it happens Jurgens graph would pass my verifier.
>>>>
>>>> no it [1] doesn't pass your verifier, which is absolutely correct!
>>>>
>>>> message :
>>>>
>>>> Verification of http://www.2sea.org/sea.rdf#turnguard?
>>>> failed	keys in profile don't match key in certificate for http://www.2sea.org/sea.rdf#turnguard
>>>>
>>>> only the response message is unclear as to why it didn't pass, because there is no statement about http://www.2sea.org/sea.rdf#turnguard in the graph.
>>> Well that's why it did not pass!
>>>
>>> Currently the ask query requires me to put the WebID from you SAN in to the ?webid slot of the SPARQL query.
>>> It is really clearly explained here:
>>>
>>> https://dvcs.w3.org/hg/WebID/raw-file/tip/spec/index-respec.html#verifying-the-webid-claim
>>>
>>> PREFIX :<http://www.w3.org/ns/auth/cert#>
>>> PREFIX xsd:<http://www.w3.org/2001/XMLSchema#>
>>> ASK {
>>>     ?webid :key [
>>>        :modulus ?mod;
>>>        :exponent ?exp;
>>>     ] .
>>> }
>>>
>>> I don't know how this could be any clearer.
>>>
>>> Ok the message could say "no relation between the WebId ... and the public key ... was found". That would be clearer.
>>> I'll add that as a todo.
>>>
>>> Henry
>> Your query has ambiguous scope, does that clarity matters?
> If it is true then it does matter indeed.

The scope of the graph matters.

>> SPARQL engines will produce different results do to how they handle:
>>
>> 1. default graphs
>> 2. named graphs.
> The spec is clear that the graph considered is the graph that is produced from the representation returned.

An there lies another problem, how do you get to the graph in question 
modulo descriptor (information) resource address?

> Is it still ambiguous now?

Yes, the graph needs a location, and a URL is how you get to said location.
>
> Henry
> http://bblfish.net/
>
>
>


-- 

Regards,

Kingsley Idehen	
Founder&  CEO
OpenLink Software
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Received on Tuesday, 10 January 2012 02:23:14 GMT

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