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Encryption & efficiency

A link about encryption from Bruce Schneier’s latest Cryptogram.  A useful scheme with current business application.  What is noteworthy is that the article mentions that the solution is not yet efficient for business use.  But no metrics are provided.  It is common that security is resisted with phrases like “inefficient”, “negative user impact” and ” too much overhead” without that being quantified.  Might be true, might not.  Efficiency is not always all it’s cracked up to be.  If you really want to kill two birds, you don’t count how many stones you use.

http://www.americanscientist.org/issues/pub/2012/5/alice-and-bob-in-cipherspace

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