Codebusters Cryptography Theory and History

Question 1

Who is known as the "father of modern cryptography"?

Accepted Answer

Claude Shannon

Answer

Julius Caesar

Answer

Alan Turing

Answer

Auguste and Louis Lumière

Question 2

Which of the following is a classic example of a substitution cipher?

Accepted Answer

Caesar cipher

Answer

Vigenère cipher

Answer

Enigma machine

Answer

RSA encryption

Question 3

What is the primary purpose of the Enigma machine during World War II?

Accepted Answer

To encode and decode secret messages

Answer

To create unbreakable codes

Answer

To break enemy ciphers

Answer

To monitor enemy communications

Question 4

In the RSA encryption algorithm, which of the following is used as the public key?

Accepted Answer

The exponent and modulus

Answer

The private key

Answer

The encryption key

Answer

The cipher text

Question 5

Which ancient civilization is credited with using one of the earliest known cryptographic techniques, the "scytale cipher"?

Accepted Answer

Ancient Greece

Answer

Ancient Egypt

Answer

Ancient Rome

Answer

Ancient China