Question: Information Security: Principles ad Practices. Write a program to help an analyst decrypt a simple substitution cipher. Your program should take the ciphertext as input,

Information Security: Principles ad Practices.

Write a program to help an analyst decrypt a simple substitution cipher.

Your program should take the ciphertext as input, compute letter frequency

counts, and display these for the analyst. The program should

then allow the analyst to guess a key and display the results of the

corresponding "decryption" with the putative key.

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