"Wheel Cipher" Thomas Jefferson 1790 (Reproduction from original design) |
When compared to our spy technology of the present, the “wheel cipher” looks like something one would get in a box of cereal (perhaps, “Frosted Colonial O’s”), but is nonetheless rather brilliant for its time. The cipher was ostensibly a threaded metal spindle upon which twenty-six wooden cylindrical pieces were fitted. Each of the wooden pieces contained all of the letters of the alphabet.
To use the device, a short message would be spelled out across one line of the letters. Then, the sender of the message would write down the corresponding gibberish which the recipient would then use to decipher the message by fiddling with the wheel. So, to use the example of the Monticello Web site, if one were to spell out “Cool Jefferson Wheel Cipher,” the line below it would read "NKYG NSUS NXML CQYO TYUH HFTD.” This is what would be sent to the recipient of the message who would align the letters on the wheel to break the code. Time consuming, but effective.
The wheel fell out of use in 1802 because it was kind of—kind of…silly, frankly. But, it had a good run and it did serve to revolutionize (no pun intended) the way in which secret communications were sent.
2 comments:
Even in our high-tech world codes and ciphers are still sometimes used by con artists {or so they'd have us believe on "White Collar".}
Very true! I thought of White Collar, too.
Post a Comment