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Date: Fri, 16 Sep 1994 22:58:59 +0200 Errors-To: listmaster@www0.cern.ch Errors-To: listmaster@www0.cern.ch Reply-To: FisherM@is3.indy.tce.com From: Fisher Mark <FisherM@is3.indy.tce.com> To: Multiple recipients of list <www-talk@www0.cern.ch> Chris Lilley wrote in <94091615144771@cguv5.cgu.mcc.ac.uk>: >In message <2E799D96@MSMAIL.INDY.TCE.COM> Mark Fisher said: > >> "Passive information" just doesn't have a chance. > >No, Of course not - kindly tell me the plain text of this passive message. > >Xcuzoaidloftzmcvlvq > >Like shooting fish in a barrel, eh? Trivial! I see I should have added the sentence I had thought about adding on making the extraction of the plain text arbitrarily hard... What I was trying to convey was that no scheme will be 100% effective. However, I expect schemes that require "large" amounts of computing power to overcome will be acceptable to most publishers. "rot13" is unlikely to be used by serious publishers; some kind of public-key system will work quite well until the factoring problem is solved (if it can be solved at all). It will take careful program design to create readers/browsers that cannot easily be made to save away the now-decrypted data. "Arbitrarily hard", once again... ====================================================================== Mark Fisher Thomson Consumer Electronics fisherm@indy.tce.com Indianapolis, IN "Just as you should not underestimate the bandwidth of a station wagon traveling 65 mph filled with 8mm tapes, you should not overestimate the bandwidth of FTP by mail."
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