I find that I have a real need for the "md5" Link rel mechanism defined in James Snell's old Atom Link Extensions<http://tools.ietf.org/html/draft-snell-atompub-link-extensions-02>draft or something functionally equivalent. Basically, what I need to do is ensure that the "src" attribute on an atom.content element is pointing to a known version of a resource rather than simply to any resource that has the same URL as in the src attribute. I'm then going to sign the Atom entry that contains this "by ref" content element.
I've looked at the HTML5 RelExtentions Wiki<http://wiki.whatwg.org/wiki/RelExtensions> but don't see anything there that looks like it does the job. Has anyone else needed hashed links in Atom? If so, what approach did you use to provide them? Is anyone aware of plans to introduce an "md5" or equivalent attribute to the HTML5 list? bob wyman
