Question: 1. (20 pts) A substitution cipher is one in which letters are represented by other letters; it can be deciphered by someone knowing the order

1. (20 pts) A substitution cipher is one in which letters

1. (20 pts) A substitution cipher is one in which letters are represented by other letters; it can be deciphered by someone knowing the order of the cipher alphabet used. One method of hiding message in this way was invented by Julius Caesar, Roman emperor over two thousand years ago. It is known as the Caesar cipher. For the given list of plain and their corresponding cipher text (alphabet) in the table below - Encode the message: THIS CODE WAS INVENTED BY JULIUS CAESAR. - Write an encryption and decryption algorithm for this given Caesar cipher. - How many total possible key in this encryption algorithm? Is it sufficient to prevent the brute force attack? - Suggest an encryption algorithm that will provide better security than Caesar cipher against brute-force attack

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