Re: [dmarc-ietf] indeterminisim of ARC-Seal b= value

["John R Levine" <[e-mail]>]

> It's even more important than it was with DKIM to have a test suite that
> can verify signing behavior.  If we don't agree on any sort of standard, a
> test suite will need to select a preferred format for the ARC headers &
> will fail all implementations that don't meet this form.  We've discussed
> this with Murray, and he agrees with this conclusion.

I have to say I don't find that very persuasive.  It's not hard to write 
test code that checks for the hashes and fields in a signature header 
without regard to what order they're in.  I would rather write better test 
code than add fragile extra cruft to every ARC implementation.

As it happens, the IETF is meeting this week in Chicago, and I expect I'll 
see Murray in the next day or two so I can talk to him directly.

R's,
John