Question

Pigpen cipher is an example of?

(a) Mono alphabetic substitution cipher

(b) Transposition cipher

(c) Poly alphabetic substitution cipher

(d) Geometric substitution cipher

The question was asked by my school principal while I was bunking the class.

Origin of the question is Cryptography topic in portion Cryptography of Data Structures & Algorithms II

Answer 1

Correct choice is (a) Mono alphabetic substitution cipher

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