I wonder what the interaction between this and a manifest approach for URI dereferencing would be. I could argue the case both ways, but would be interested in your thoughts.

--
Thomas Roessler, W3C  <t...@w3.org>



On Mar 18, 2009, at 20:53, Frederick Hirsch <frederick.hir...@nokia.com> wrote:

Marcos

Regarding the requirement for validity checking zip relative paths in widget signature [1] references, does the following change make sense to you?:

Change last paragraph in section 5.1, Use of XML Signature in Widgets to (only last sentence is changed, to two new sentences):

Every ds:Reference used within a widget signature MUST have a URI attribute. Every ds:Reference to an item within the widget signature MUST use an IDREF value for the ds:Reference URI attribute, referring to a unique ID within the widget signature [XML-Schema- Datatypes]. Every ds:Reference to a widget file MUST use a URI expressing the zip relative path to the widget file, properly URL encoded [URI]. The zip relative path MUST conform to the requirements expressed in [Widgets Packaging].

Please let me know any comment or suggestion. Thanks for noting this concern.

regards, Frederick

Frederick Hirsch
Nokia


[1] http://dev.w3.org/2006/waf/widgets-digsig/

On Mar 17, 2009, at 8:15 AM, ext Marcos Caceres wrote:


Hi Frederick,

On 3/17/09 1:01 PM, Frederick Hirsch wrote:
The latest draft includes the revised text from Thomas.

Marcos, are you suggesting we add something more? It sounds like what
you are saying here, is that it should be a valid widget file. Isn't
that part of P&C checking? I'm not sure what it means to check that the
paths are "as secure as possible."

You might want to check the following section of the P&C [1] and see if
it is usable in dig sigs. Given that the paths in the <reference>
elements MUST be zip-relative-paths, the rules for checking the validity
of those paths may apply to the Widgets Dig Sig spec.


[1] http://dev.w3.org/2006/waf/widgets/#zip-relative-paths


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