5
Requirements: Web Environment
¥XML 1.1 http://www.w3.org/TR/xml11/
¥XPath 2.0 http://www.w3.org/TR/xpath20/
¥xml:id http://www.w3.org/TR/xml-id/
¥Schema validity when inserting
signature and/or encryption into XML content
¥Web 2.0/Browser
environment
–Integration
with scripting languages (Perl, Python, Ruby, PHP etc)
¥Semantic Web/RDF/Metadata