Submitted by Bill St. Clair on Tue, 07 Feb 2012 19:08:32 GMT  <== Computers ==>   <== Quote ==> 

From Jon Callas:

"Imagine a computer that is the size of a grain of sand that can test keys against some encrypted data. Also imagine that it can test a key in the amount of time it takes light to cross it. Then consider a cluster of these computers, so many that if you covered the earth with them, they would cover the whole planet to the height of 1 meter. The cluster of computers would crack a 128-bit key on average in 1,000 years." -- Burt Kaliski

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