Question

What is route cipher?

(a) a transposition cipher that performs encryption by following an imaginary pattern on a grid

(b) a substitution cipher that performs encryption by following an imaginary pattern on a grid

(c) a transposition cipher that performs encryption by following a zig zag pattern on a grid

(d) a substitution cipher that performs encryption by following a zig zag pattern on a grid

This question was addressed to me by my school teacher while I was bunking the class.

This is a very interesting question from Cryptography topic in chapter Cryptography of Data Structures & Algorithms II

Answer 1

Correct option is (a) a transposition cipher that performs encryption by following an imaginary pattern on a grid

Easiest explanation - Route cipher is a transposition cipher. It encrypts the plain text by following an imaginary pattern on a grid. This pattern can vary from one version of route cipher to others.