? supporting multiple signatures on single messages
Humm... not sure about this one. If verifiers only supported a single
signature it would be wise for signers to strip out any existing signatures
before re-signing. That would cause the loss of "potentially" useful data
wouldn't it? But, come to think of it, old signatures don't verify
(otherwise, why resign the message at all) and what is the practical use of
a non-verifiable signature. You can't make any definitive decisions based
on broken signatures can you?
--
Arvel
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