On 5/2/09 03:23, Kyle Hamilton wrote:
There are two states in the NIST key state transition diagram that are
appropriate to this entire concept... "compromised" (state entered
when the private information associated with it -- i.e., the private
key and its passphrase, and has only one possible state transition
from it)


Sorry, Kyle, I don't parse that. Is there a missing phrase like "is not reliable to protect information" ?


and "compromised destroyed" (state entered either from
"compromised", when no information is protected with that key anymore,


This may imply a definition by usage, rather than an objective definition of when to change state?


or from "destroyed", when no information is protected with that key
and it is later found to have been compromised during its
non-destroyed period).

Once a key is in compromised state, it can never become uncompromised
again.


OK, I see that. I find a definition of "compromise" as interesting. I did observe that argument over somewhere else when one protagonist said "compromised" means we can't show it isn't revealed, and someone else said "compromised" means we can show me it is revealed....



iang

ps: Kyle, are you on the new list yet?
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