>> So I think it would be best if the browser detected that there is
>> a better-suited certificate (one which doesn't need explicit user
>> interaction); the browser should then also invoke explicit approval
>> if the NR certificate is used even though "select automatically"
>> was configured (explaining that this specific certificate is a
>> formal signature).

>That's an interesting idea.  Please file an Enhancement request "bug"
>in bugzilla.mozilla.org.  But I wouldn't expect it to be implemented in
>the next 6 months, because there's no much work scheduled ahead of it.
>So in the meantime, get an EKU extension if you can.

I would be very hesitant about such a change as the "algorithm" behind
this "better-suited certificate" stuff is anything but clear[*].  In fact, it 
seems
that most issuers do not make a distinction between signature and authentication
certificates these days.  The meaning of the NR-bit has been discussed to
death in PKIX but no RFC was produced as there were no consensus on
what it actually meant :-(

Anders R

*] There is to my knowledge no standard for identifying a "suite" of
certificates, only local conventions.  These conventions MAY be
universal but I would not count on it.
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