At 3:20 PM -0500 2003/10/27, David Maxwell wrote:
In the case of Access controls, if someone has a tight consent
definition such as 'I accept mail from these four people', and if mail
senders are authenticated, then this recipient will _never_ get
something outside of that consent definition.
Depends on how you define "mail from these four people", and how
you prove beyond a shadow of a doubt that the message did actually
come from them. What about messages forwarded by them from other
people? Does the message have to originate uniquely from one of
these four people, or are they allowed to forward messages that they
themselves did not write?
I don't recall making any criticism of filters besides a) cpu intensive
and b) can't ever be perfect.
I submit that authentication methods can also be CPU intensive,
and usually also have a small percentage of failures, both false
negatives and false positives.
--
Brad Knowles, <brad(_dot_)knowles(_at_)skynet(_dot_)be>
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, Historical Review of Pennsylvania.
GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+ !E-(---) W+++(--) N+
!w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++) X++(+++) R+(+++)
tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)* z(+++)
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