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What is Playfair Cipher Implementation about?

This C++ program implements a Playfair cipher encryption and decryption algorithm. It takes in a key from the user, generates a 5x5 Playfair matrix based on the key, encrypts and decrypts messages by applying the cipher to pairs of letters, and outputs the encrypted/decrypted messages. The main functions include removing duplicates from the key, generating the Playfair matrix, encrypting messages by applying the cipher rules to letter pairs, and decrypting ciphertexts back to the original messages.

Author

jay

Language

EN