Question

Which of the following cipher uses polybius square cipher in its first step of encrypting data?

(a) Autokey cipher

(b) One time pad cipher

(c) ADFGVX cipher

(d) Rail fence cipher

The question was asked in an interview for internship.

I want to ask this question from Cryptography topic in portion Cryptography of Data Structures & Algorithms II

Answer 1

The correct answer is (c) ADFGVX cipher

Easy explanation - ADFGVX cipher uses polybius square cipher in its first step of encrypting data. It uses a 6 X 6 version of polybius square.