Complete the Playfair matrix for the keyword COMPSCI and then encrypt the message JILL

Complete the Playfair matrix for the keyword COMPSCI and then encrypt the message JILL

Expert Solution

Hi, here is your answer. Please give an upvote. If you have any doubts regarding my answer, please tell me in the comments. I would be very happy to help you.

3 rules of encryption in Playfair Cipher are:

If the 2 alphabets of a pair are in the same row, then replace each alphabet with an alphabet which is immediate right to it in the same row.
If the 2 alphabets of a pair are in the same column, then replace each alphabet with an alphabet which is immediate down to it in the same column.
If the 2 alphabets of a pair are neither in the same column or row, then first form an imaginary rectangle having the 2 alphabets as vertices of a diagonal, then encrypt each alphabet by replacing it with the alphabet in the other corner, but in the same row.

Here is my handwritten step by step solution.

Finally we get the ciphertext as BVEFHZ for the message JILL

venereology answered 2 years ago

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Complete the Playfair matrix for the keyword COMPSCI and then encrypt the message JILL

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