Question

Rail fence cipher is an example of ___________

(a) mono-alphabetic cipher

(b) poly-alphabetic cipher

(c) transposition cipher

(d) additive cipher

I got this question during an interview.

My enquiry is from Cryptography in division Cryptography of Data Structures & Algorithms II

Answer 1

Right option is (c) transposition cipher

Easiest explanation - Rail fence cipher is a transposition cipher. It falls under the category of transposition cipher as it encrypts the plain text by rearranging its letters.