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340-cipher FBI Suggestions

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Paraphrasing Daniel Olsen, Cryptanalysis for the FBI:

  • 340-cipher is similar to the 408-cipher except that the 340-cipher appears to have "bogus rows."
  • Lines 1-3 and 11-13 have distinctly greater degrees of randomness.
  • Lines 4, 10, 14, 17 and 18 have high character repetition.
  • Rows are more random than columns.
  • Most likely a homophonic substitution.

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