Which of the following cipher does not require the use of tabula recta?(a) running key cipher(b) vigenere cipher(c) gronsfeld cipher(d) trithemius cipherThis question was addressed to me during an interview for a job.My enquiry is from Cryptography topic in section Cryptography of Data Structures & Algorithms II

Which of the following cipher does not require the use of tabula recta

1.	Which of the following cipher does not require the use of tabula recta?(a) running key cipher(b) vigenere cipher(c) gronsfeld cipher(d) trithemius cipherThis question was addressed to me during an interview for a job.My enquiry is from Cryptography topic in section Cryptography of Data Structures & Algorithms II
Answer» Right ANSWER is (c) gronsfeld CIPHER To explain: Ciphers like RUNNING key cipher, VIGENERE cipher, TRITHEMIUS cipher etc. makes use of tabula recta. Whereas gronsfeld cipher does not require tabula recta for encryption of plain text.

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