What else do we need to be effective at signing XML?
Something like XFDL's Signature Filters
Why sign only portions of a form?
- Some forms carry non-presentation elements
'Views' for other apps (database, workflow)
Some computes must remain active
Separate page for data layer
Other XFDL pages can show multiple views
- Some forms require multiple signatures
- Some forms require a user to only sign a portion
of the form, such as 'Office Use Only' section or
sections for successive signers in a workflow.
- Additional documents enclosed in form do not
have an identity until created