[ietf-dkim] New Issue: Base: Upgrade indication and protection against downgrade attacks

[Dave Crocker]

>> Having an agility approach that we like more than any other approach, and that 
>> just happens to be robust against downgrade attack, is different than focusing 
>> on the concern for downgrade attack.
> 
> Right. There are any number of reasons why we may have to change
> algs. Security attacks, costs, IP claims...


So forgive me for being so dense -- even though I assume folks are used to that 
by now -- but DKIM already supports multiple signatures (including permitting 
alternate algorithms).

So I am now entirely unclear what change is needed and what problem is being 
pursued, by the current thread.

d/
-- 

Dave Crocker
Brandenburg InternetWorking
<http://bbiw.net>