Compute Index Coincidence Ic Sample B Conclude Length D Key Word Used Encrypt Message Exp Q34747308

Question

3. One hundred characters of ciphertext from a suspected Beaufort cipher were intercepted by one of your agents. Here is the

a. Compute the Index of Coincidence IC for this sample.

b. What can you conclude about the length d of the key word usedto encrypt the message? Explain your answer.

3. One hundred characters of ciphertext from a suspected Beaufort cipher were intercepted by one of your agents. Here is the frequency distribution of the letters

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