Question

Which of the following cipher replaces letters with symbols?

(a) polybius square ciper

(b) affine cipher

(c) caesar cipher

(d) pigpen cipher

This question was addressed to me in exam.

My doubt stems from Cryptography in portion Cryptography of Data Structures & Algorithms II

Answer 1

Right option is (d) pigpen cipher

The explanation is: Pigpen cipher encrypts the plain text by replacing each letter with a corresponding symbol. Pigpen cipher is an example of geometric substitution cipher.