• generate matrix with the keyword and alphabet letters on it.
• split the word that we need to encrypt into pairs.
• be able to get the word that the user want to encrypt and encrpyt it .
• setup flags for the program to get user input for cli.
• Be able to encrypted word with playfair cipher.
• setup unit testing for encrpytion.
• Be able to decrypt word with playfair cipher.
• setup unit testing for decryption.

$ go mod download
$ go build .
$ ./playfaircipher -word <word to encrypt> -keyword <your keyword> -encrypt
$ ./playfaircipher -word <word to decrypt> -keyword <your keyword> -decrypt

To Run unit testing

• Run the command bellow from the root of the project .

$ go test