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Encryption in hill cipher is done using ______________(a) matrix multiplication(b) a 5×5 table(c) vigenere table(d) matrix inversionThis question was posed to me in an interview for internship.Question is taken from Cryptography topic in section Cryptography of Data Structures & Algorithms II

Answer»

The correct option is (a) matrix MULTIPLICATION

Easiest EXPLANATION - Encryption of PLAIN text in playfair cipher is done using matrix multiplication. Then MODULO 26 of the resulting matrix is taken so as to GET the ciphered text.



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