| Rivest's analogy about a DES Serach |
Ron Rivest wrote to
coderpunks@toad.com on Monday, 06 Jan 97 23:07:16 EST the message
<199701070407.AA22621@swan.lcs.mit.edu>:
For your amusement:
The number 2^56 of DES keys is quite close to the number of 3"x5" index
cards that it takes to cover the surface of the earth (ocean included).
A Pentium searching 200,000 keys/second is like driving a car at 70 mph
and checking all the index cards in a 200-foot wide swath. At this speed,
it takes two weeks just to go around the earth once.
Cheers,
Ron Rivest
Back to me.
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