entropy of data....?

[Claborne, Chris at SanDiegoCA]

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From: Jeff Gostin<jgostin at eternal.pha.pa.us>
> can't be broken in a reasonable amount of time. I'm  interested in what
> most of the people on this list would consider a reasonable amount of
> time though.

Hasn't someone come up with a name for this like "Entropy of the data is 30 
days" or... "the half-life of the data is 15 days".  This is a critical 
value when looking at it from a military point of view.  If you can't decode 
enemy plan for attack before a certain date/time then the info is 
useless....

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