Barry Leiba wrote:
Well, the issue is that if, say with the above example, signer #3
signs the other three signature headers, and then the next hop
re-orders them, the verifier can still figure out which records
signed which others.
So what?
So the signature can survive the reordering; it's essentially a helper
for canonicalization.
I'm not suggesting it's critical, only that it was suggested, that we
had no further discussion on it, and that it's an alternative to
Paul's proposal and should be discussed together with it.
Signatures can already survive reordering right now by not signing
the DKIM-Signature.
My question was much more basic: what useful thing would a receiver do
differently if it knew the order in which signatures were applied? I really
can't think of anything.
Mike
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