Hi John, Thank you -- that answers my question, and I appreciate you taking the time.
Gino On Wed, Jul 22, 2026 at 5:19 AM John Levine <[email protected]> wrote: > > It appears that Gino Grossi <[email protected]> said: > >My understanding is that an S/MIME or PGP signature can break when an > >intermediary adds or removes content, such as a disclaimer or an > >external-email warning. I'm wondering whether the record of changes > >DKIM2 requires intermediaries to keep might let a verifier reconstruct > >the earlier form of the message (the actual signed form before the > >disclaimers or warnings were added). > > While it's intended to recover DKIM2 signatures, if you unwind the changes > you'll get the earlier version of the message so I'd expect you could > verify S/MIME or PGP signatures too. > > >Mainly I'm asking about the design intent: is reconstruction meant to > >be a feature other signature schemes could rely on that way, or is it > >only an internal DKIM2 mechanism? > > I don't think we're going to make any promises about other signature schemes, > but unless something strange is going on, I'd usually expect them to work. > > R's, > John _______________________________________________ Ietf-dkim mailing list -- [email protected] To unsubscribe send an email to [email protected]
