Problem 2a

Using the original plaintext below in bold quotes (e.g. use only alphabet characters, a-z), write a program to encrypt plaintext into ciphertext using the Playfair cipher. . If he had anything confidential to say, he wrote it in cipher, that is, by so changing the order of the letters of the alphabet, that not a word could be made out.Getting started:

1.Use the 5 by 5 matrix with keyword monarchy.

2.Iterate over each character of the plain text:

1.If the character is alphabet:1.Follow the four rules on page 39 of the course text to encrypt two plaintext letters at a time.

2.Calculate the position/index of the character in the 0-25 range.

3.Find the character at the new position.

4.Replace the current letter by this new character.

2.Else, If the character is not alphabet, ignore the character, and move to the next position in the plaintext. with no change.

3.Your program is to print or graph results

Problem 2b.

Using the ciphertext you generated from Problem 2a, write a program to decrypt ciphertext into plaintext using the Playfair cipher. Your program is to print or graph results