Crypto: HW 5            Fall 2001            Michael Siff      

Due Thursday, September 27
  1. Finish HW 4.

  2. Read: the rest of (pp. 124-142) of Chapter Three as well as Appendices E,F,G of The Code Book. (You should have read the appendices for Monday, but if you did not, read them now.)

  3. Read The New York Times article entitled "When Science Inadvertantly Aids an Enemy". hw05.php hw

  4. Decrypt the following ADFGVX cipher (the one we started in class). The grid-key is the in Appendix F of the The Code Book. The keyword is "RIGHT". The ciphertext is:
      XGFGDFFFDAGFDVXXDVAVGD
    


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