Program Plan: This Program is an attempt to write simple ROT13 encryption and decryption to provided string. We are performing ASCII code arithmetic to perform encryption and decryption. This program also attempts to decrypt an encrypted string with out key using the substitution mechanism. All possible outcomes of decrypted strings are stored in file "possible_password.txt";

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Chapter 21, Problem 21.24E

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Program Plan:

This Program is an attempt to write simple ROT13 encryption and decryption to provided string.
We are performing ASCII code arithmetic to perform encryption and decryption.
This program also attempts to decrypt an encrypted string with out key using the substitution mechanism. All possible outcomes of decrypted strings are stored in file "possible_password.txt";

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