Question

Which of the following ciphers are created by shuffling the letters of a word?

(a) rotor cipher

(b) rail fence cipher

(c) vigenere cipher

(d) hill cipher

The question was posed to me in an internship interview.

The above asked question is from Cryptography topic in section Cryptography of Data Structures & Algorithms II

Answer 1

Right choice is (b) rail fence cipher

Explanation: There are two types of traditional ciphers- Transposition and substitution cipher. In transposition cipher the letters of the given data are shuffled in a particular order, fixed by a given rule. Rail fence cipher is an example of transposition cipher.