Re: Notes from Non-meeting

Brian wrote:
> One of the things that keeps getting us "wrapped around the
> axle" is that we can't seem to separate four different aspects
> of this work:

<snip>

> 4. The cryptographic operations needed to protect the object
> when it is transported, and possibly as part of the implementation
> of the policy.

I am missing the main point of the charter:
"assess authorization, integrity and privacy requirements to transfer or authorize via policies the release of location information, for different applications, in different layers, mandatory for implementation of location-aware protocols"

This is NOT choosing the crypto operations needed.

<snip>

> We had a really short discussion on terminology. The discussion
> centered around the word "target". The basic confusion is
> whether the target is an object like a cell phone, a collection
> of objects like a cell phone a pager and a PDA, or a person
> carrying all of the above.

> Henning observed that we should use "object oriented" language,
> and thus talk about the person object inheriting location from
> the cell phone object. The set of objects (cell/pager/PDA) problem
> was observed to be a case of multiple inheritance but unlike in
> computer science, not an inherently hard problem to solve :)

The problem with this solution is the dynamics of the "inheritance".
If you use a certain laptop (or cell phone) and logon entering
your password, then your location is now linked to the location
of the device. Now the important point is that the person
who decides the policies for the location information changes.

I do not see why the special case of a "target" being a "device"
makes life easier. The more general case is indeed needed
in many scenarios (like the multi-user PC).

Best regards,

Jorge

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Received on Wed Mar 20 19:50:37 2002