> 2. The operation of the signing library that signs with a different
> key depending on the sender.
> As far as how hard #2 is, does anyone's implementation support this
> currently (I'm asking, I don't know)?
Yes, MDaemon does. We found this to be a necessity so I created the
ability to assign selectors and d= values based on criteria present
within a message eligible for signing. It wasn't difficult. The only
problem will be if there were thousands of selectors because our GUI
interface will need to be improved.
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