My take is that making gratuitous changes is silly and should be
avoided. Personally, I like "|" as a separator better than ":", but
that's pretty gratuitious and I would oppose such a change on
principle.
But I'm reminded of the syntax of the sendmail.cf file. A great many
years ago I realized that the syntax sucked and I should fix it, but
I didn't in the name of back compatibility (there were perhaps a few
hundred servers that would have been affected). In retrospect that
was stupid.
If there weren't other required changes then I might feel
differently. But the SHA-256 change means that both signers and
verifiers are going to have to update their software anyway. This
will be just part of that update. No extra work for the installed
base.
If the proposed change weren't at least some improvement then I might
feel differently. But I think it is an improvement. We can argue
how much of one, but that's not the point.
If it was impossible to provide a transition period then I might feel
differently. But it's not impossible, as has been described.
In short, I'm in favor of this change.
Or perhaps I should have just said "me too".
eric
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