W3C XML Processing Model Workshop
Donald E. Eastlake 3rd
W3C XML Processing Model Workshop
Cambridge, MA 12-13 July 2001
Position Paper of
Donald E. Eastlake 3rd
Member of Technical Staff
Motorola Laboratories
20 Cabot Boulevard,
Mansfield, MA 02048 USA
My Background: I am Co-chair of the XML Digital Signature Working
Group, co-editor of the XML Digital Signature specification,
and editor of the algorithms section of the XML Encryption
specification. I have extensive background in protocol
design and implementation.
Company Needs: Motorola is increasingly considering the use of
XML for handset and other mobile communications and
transcoding. A coherent XML Processing Model is an important
element of this.
Expectations: I expect, at the workshop, to be able to provide
input from the protocol point of view concerning schemes of
XML Processing. Also, based on the workshop, I expect to be
able to advise parts of Motorola concerning current and
forseeable XML Processing paradigms.
Contributions: I expect to be able to contribute to the
discussions based on my protocol background.
In particular, protocols typically involve dymanic
composite documents transmitted between computer processes
only portions of which, if any, are intended for direct human
consumption. There are frequently multiple parties involved
and it is quite common for a protocol message/document to be
constructed based on parts of previously received
messages/documents and local knowledge. Security constructs,
such as signature and encryption, are usually applied to
parts of documents, are frequently nested, and such parts are
commonly taken from one document and used in constructing
another. The dynamic composite nature of prortocol messages
also poses problems in the generation of unique IDs.
Presentation: If desired, I would be happy to provide a 15 minute
presentation expanding on the points above; however, although
I had initially hoped to attend both days of the workshop,
urgent business travel for my employer makes it impossible
for me to attend the first day and I do not know if such a
presentation, even if desired, would be appropriate for the
second day.