- From: Joseph M. Reagle Jr. <reagle@w3.org>
- Date: Wed, 26 Jul 2000 11:23:42 -0400
- To: Ed Simon <ed.simon@entrust.com>
- Cc: "'w3c-ietf-xmldsig@w3.org'" <w3c-ietf-xmldsig@w3.org>, "'ht@cogsci.ed.ac.uk'" <ht@cogsci.ed.ac.uk>
At 17:29 7/25/2000 -0400, Ed Simon wrote:
>4. There is no reason why an XSLT transform in an XML Signature should not
>have a root element of
><stylesheet xmlns="http://www.w3.org/1999/XSL/Transform">
>and contain complete, valid XSLT stylesheets.
>
>5. Schemas allow us to enforce point 4. Enforcing point 4 will make it
>that
>much easier to achieve point 3.
As an aside, the use of ANY has the implied default of
processContents='strict'. This may be approriate in specific instances (like
XSLT) however I think it's a bit too strict for everything in general. So I
propose we move towards <any ... processContents='lax' ...> in things like
Transorms, Object, PGPData, SPKIData, etc.
>The problem with the <any> element is that even if the namespace attribute
>is "http://www.w3.org/1999/XSL/Transform", it does not
>enforce that the child element is <stylesheet> so it could be quite
possible
>to have
That is true: "Any well-formed XML from any namespace (default)"
If we wanted to do what you are speaking of we'd use a declaration below (I
think). However, XSLT [1] didn't provide a schema anyway and consequently
there might be some other tricks we could do, but seems too complicated for
the derived benefit...
<schema targetNamespace='&dsig;'
version='0.1'
xmlns='http://www.w3.org/1999/XMLSchema'
xmlns:ds='&dsig;'
elementFormDefault='qualified'
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <!--Simon-->
<import namespace='http://www.w3.org/1999/XSL/Transform'/> <!--Reagle-->
...
<element name='Transform'>
<complexType content='mixed'>
<choice minOccurs='1' maxOccurs='unbounded'>
<any namespace='##other' minOccurs='0' maxOccurs='unbounded'/>
<element name='Xpath' type='string'/>
<element ref="xsl:stylesheet"/> <!-- Simon-->
</choice>
<attribute name='Algorithm' type='uriReference' use='required'/>
</complexType>
</element>
__
[1] http://www.w3.org/TR/1999/REC-xslt-19991116
_________________________________________________________
Joseph Reagle Jr.
W3C Policy Analyst mailto:reagle@w3.org
IETF/W3C XML-Signature Co-Chair http://www.w3.org/People/Reagle/
Received on Wednesday, 26 July 2000 11:23:54 UTC