1/22/2012 -- LAMC Beginners: Cryptoclub IIWe will continue our study of cryptology with a look at the Vigenere cipher, once believed by many to be unbreakable.
NOTE: For homework, complete sections 1-4. On Section 5, begin by numbering the cipher (the first one, which begins "KVX DOGRUXI OM R PHRH-KVBMRZ ...") in 123123123 fashion, and since there is a single letter R, guess either R=a or R=i for the ciphertext letters under number 1. Use your guess to decode the first three lines, but only the letters under number 1. We'll work on it more next week. Handouts: |
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