When an effort starts, the more difficult the topic and the more diverse the
participation, the higher the risk of standardization failure.
On the contrary, the risk of standardization failure becomes higher when
the standards fail to address the problem. If the problem is inherently
difficult and complex, oversimplifying the problem is a sure way to
produce yet another failed standard.
As of today, there is no standardized transit-time message authentication
technique. If we can produce a standard that permits validating ANY identity
with a signed message, we will have created a stable base for all sorts of
enhancements.
Several existing email authentication standards prove you wrong.
Keith
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