Julien suggests that a new mechanism is required to provide secure notification when sending arbitrary content. One useful and simple approach to this problem is provided by the "Magic Signature"<http://salmon-protocol.googlecode.com/svn/trunk/draft-panzer-magicsig-01.html>method of the Salmon Protocol <http://www.salmon-protocol.org/>. If one assumes that the primary concerns for security involve ensuring that data tampering and authorship can be detected, the Magic Signature approach should do the job well. It would not, however, be suitable if the intent is to publish "secret" data.
See: http://salmon-protocol.googlecode.com/svn/trunk/draft-panzer-magicsig-01.html bob wyman
