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July 02, 2009

Breaking a Two Hundred Year Old Code

In today's WSJ, Rachel Silverman authored an article title, "Two Centuries On, a Cryptologist Cracks a Presidential Code Unlocking This Cipher Wasn't Self-Evident; Algorithms and Educated Guesses."  A 36 year-old mathmatician breaks this code in a letter written to Thomas Jefferson.

PDF version of letter  (11 MB)

-Chris

Posted at 02:07 PM in crypto | Permalink

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