Cracking Substitution Ciphers

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• Misc
  • “Gold Bug” essays due (via email) by midnight tonight
  • Midterm
    • Thursday (Oct. 6)
    • Roughly 3 - 6 short-answer questions on writing “moves” (e.g., quotations, theses, summary, etc.) or cryptography (e.g., substitution ciphers)
    • Possibly a short essay question
    • Whole class period
    • Open book, notes, computer; closed person
    • You’ll want access to “The Gold Bug”
• Questions?
• Breaking Substitution Ciphers
  • How did breaking one of the other class ciphers go?
  • How do you do it?
    • Letter frequency
    • Short/common words
  • Finish breaking another group’s substitution cipher
• Next
  • (After exam and break)
  • Enigma chapters 1 - 4
  • Read them (give yourself plenty of time)

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