In Playfair cipher, at first, a key table is produced. That key table is a 5 by 5 grid of alphabets which operates as the key to encrypt the plaintext.(a) Rolling Cipher(b) Shift Cipher(c) Playfair Cipher(d) Block CipherThe question was posed to me in examination.My query is from Cryptography topic in section Cryptography in Security of Cyber Security

In Playfair cipher, at first, a key table is produced. That key table

1.	In Playfair cipher, at first, a key table is produced. That key table is a 5 by 5 grid of alphabets which operates as the key to encrypt the plaintext.(a) Rolling Cipher(b) Shift Cipher(c) Playfair Cipher(d) Block CipherThe question was posed to me in examination.My query is from Cryptography topic in section Cryptography in Security of Cyber Security
Answer» Right choice is (c) Playfair Cipher The explanation: In Playfair cipher, at first, a key table is PRODUCED. That key table is a 5 by 5 grid of ALPHABETS which operates as the key to ENCRYPT the plaintext. All the twenty-five alphabets have to be unique and letter J gets omitted.

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