Bob Wyman wrote:
One other *significant* limitation in Atom's support for signatures is that there is no way for an intermediary to add to or otherwise modify an Atom entry without breaking the signature.
If people want to send out signed entries with an XPath filter[0] that gives intermediaries a place to put things, there's nothing stopping them. If they don't want PubSub or equivalent to touch a single bit, that's their prerogative.
Robert Sayre
[0] http://www.w3.org/TR/xmldsig-filter2/
