Suppose that there exists a variant of Playfair cipher which supports both alphabets {a,b,...,z} and numbers...

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Suppose that there exists a variant of Playfair cipher which supports both alphabets {a,b,...,z} and numbers {0,1,2, ...,9} for encryption and decryption. Design the key matrix accordingly and encrypt the plaintext message "happy diwali 2022" using the key "CAT1". Assume the same rules of encryption and decryption as that of normal Playfair cipher. [10] - Construct a Playfair matrix with key "lumberjack" and show how encryption and decryption of the following message "I AM VERY HAPPY" with suitable procedure. [10] Suppose that there exists a variant of Playfair cipher which supports both alphabets {a,b,...,z} and numbers {0,1,2, ...,9} for encryption and decryption. Design the key matrix accordingly and encrypt the plaintext message "happy diwali 2022" using the key "CAT1". Assume the same rules of encryption and decryption as that of normal Playfair cipher. [10] - Construct a Playfair matrix with key "lumberjack" and show how encryption and decryption of the following message "I AM VERY HAPPY" with suitable procedure. [10]

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This question involves two separate tasks related to a variant of the Playfair cipher First lets address the part about encrypting the plaintext message happy diwali 2022 using the key CAT1 For the Pl... View the full answer