Question

Choose the weakest cipher from the following?

(a) vigenere cipher

(b) rail fence cipher

(c) hill cipher

(d) pigpen cipher

I got this question in unit test.

This intriguing question comes from Cryptography topic in chapter Cryptography of Data Structures & Algorithms II

Answer 1

Correct option is (d) pigpen cipher

To explain: Pigpen cipher is the weakest cipher out of the given options. This is because it is a simple geometric substitution cipher so can be easily cracked using frequency analysis.