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Re: W3C


At 05:24 PM 4/16/97 EDT, Ron Rivest wrote:
>I had a long conversation with Philip DesAutels and Yang-hua Chu today
>about places where there may be synergy between W3C and SPKI/SDSI.  
>I think there is great potential here.  They are also on a fast track
>to get the next version of PICS up and running.  Our projects are at 
>about the same stage.
>Here is the problem PICS tries to solve.
>	There are a variety of "rating systems" (e.g. specifications
>        that specify how to rate web pages).  A rating system may
>	be defined by the "rating system organization".  
>	There are a variety of "rating organizations" that actually
>	rate web pages according to a particular system.
>	The rating organization needs to be authorized by the 
>	rating system organization to provide digitally signed ratings
>   	for web pages in accordance with the rating system designed
>	by the rating system organization.
>	A user specifies a policy such as "this browser should only
>	display web pages that have been have rating "sexual content
>	less than 4" according to the rating system defined by
>	rating system organization RSO.  Any rating organization
>	authorized by RSO can provide these ratings.  
>How well does this fit into the SPKI/SDSI model?


	I think it fits very well.  I was working with W3C last Fall while this 
process was being put into place and the same tuple reduction we're talking 
about turns out to be what they needed for their work.  They decided not to 
pursuse the trust engine for lack of manpower, last Jan or so, but the need 
is still there as is the fit.

 - Carl

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