Attila Dimedici writes “A code expert just cracked a code used by a friend of Thomas Jefferson in a letter written to Jefferson some 200 years ago. This code is fairly easy to crack using a computer, but extremely difficult without one. I think it would have been much harder if the author had not included an indication as to what code algorithm he used in the letter accompanying the coded message.”

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Source/Kaynak : http://rss.slashdot.org/~r/Slashdot/slashdot/~3/oUAzA3kzeMU/200-Year-Old-Cipher-Finally-Cracked