[foaf-protocols] sparql and wrap

Kingsley Idehen kidehen at openlinksw.com
Sun Mar 13 21:41:11 CET 2011

On 3/12/11 2:56 PM, peter williams wrote:
> You know, if you want to generate some sales, you want to extend the 
> validation engine of virtuoso  to include the WRAP token.
> Then anyone of a million Azure ACS tenants can use an on-premise 
> instance of the sparql server, with client authenticating to its 
> sparql endpoint via the websso handoff chain. Oo --premise is 
> relative, since anyone can how host any VM in the azure cloud, these 
> days. (id be interested in evaluating a packaged VM, ready built for 
> cloud hosting... as a working OS... with just a sparql endpoint visible)
Will look into this.

You can instantiate your own Virtuoso via Amazon EC2 [1] :-)
> In the ACS SDK, samples, consult WCFAuthMgt sample code. It has the 
> WRAP/SWT token parser/hmac-validator  code, and shows how to receive 
> the handoff from ACS from the www-authorization header value relayed 
> by the initiator. The "token" format is just a query-string, with a 
> mac on the end. Could not be much simpler, at this point (unless one 
> recodes that into json, I suppose).
> Since the sparql server is being used as a SUPPORTING entity for webid 
> validators, it's as useful for the endpoint acting in this capability 
> to support _/handoff tokens/_  as receive webid assertions directly. 
> Then it fits into n-tier SOA used in the mainstream world, well, 
> offloading work from the listeners.


2. http://ods.openlinksw.com/wiki/ODS/ODSInstallationEC2 -- ODS 
installation via EC2 Cloud
-- in addition to basic Virtuoso + ODS you have stuff like DBpedia + BBC 



Kingsley Idehen	
President&  CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen

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