Are these not well-defined rules, in the same vein that canonicalizations
are?  That's certainly the intent here.

They are, but they're not useful in the way that the existing ones are.

The existing ones are strict enough that everyone appears to agree that if the signature validates, it's the same message for a pretty strict version of "same". These say that it's a message somewhat related to the original, but "somewhat related" isn't useful in the same binary way that "same" is.

Regards,
John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY
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