[ietf-dkim] Charter bashing...
johnl at iecc.com
Tue Oct 11 21:07:27 PDT 2005
>> ? supporting multiple signatures on single messages
This is a chronically contentious point.
PRO: Relays can re-sign to show the path that a message took. Lists
and forwarders can re-sign so a message has both the original sender's
sig and the list or forwarder's sig.
CON: If you sign it, you take responsibility for it, recipients
shouldn't care how it got to you. Multiple signatures are fragile
when transiting list managers that may modify the subject and body (a
topic debated at length with IIM.) If a message has both a good sig
and a bad sig, semamtics are not clear.
My inclination is to waffle, to permit multiple signatures but not to
encourage them and not to try to specify the semantics. They don't
seem very useful to me, but they also don't seem so clearly useless
that I would want to outlaw them.
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