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Encryption and Decryption using Polyalphabetic Ciphers by using C++ programming language: Input A given text file for plaintext or ciphertext (assume only 26 letters, no
Encryption and Decryption using Polyalphabetic Ciphers by using C++ programming language: Input A given text file for plaintext or ciphertext (assume only 26 letters, no special characters, numbers and punctuations) 3 substitution ciphers, M1,M2,M3 M1 left shift 3 letters M2 Plain: a b c d e f g h i j k l m n o p q r s t u v w x y z Cipher: D K V Q F I B J W P E S C X H T M Y A U O L R G Z N M3 right shift 5 letters cycling pattern n=3: M1,M3,M2,M3; M1,M3,M2,M3; Output Encrypted ciphertext or decrypted plaintext
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