Introduction to Cryptography Quiz

What is the practice and study of hiding information?

• Cryptography

• Cryptanalysis

• Cryptology

• Encryption

What is the process of converting ordinary information into unintelligible gibberish?

• Decryption

• Encryption

• Cryptanalysis

• Cryptology

What is a pair of algorithms that create the encryption and the reversing decryption?

• Key

• Cipher

• Algorithm

• Cryptosystem

What principle states that all algorithms must be public while only the keys are secret?

• Kerckhoff’s principle

• Encryption principle

• Decryption principle

• Cipher principle

What is a method of encryption by which units of plaintext are replaced with ciphertext according to a regular system?

• Transposition cipher

• Substitution cipher

• Rail Fence cipher

• Columnar cipher

What is the name of the early substitution cipher where each character is shifted three places up?

• Caesar Cipher

• ROT 13

• Monoalphabetic Cipher

• Polyalphabetic Cipher

What is the method of encryption by which the positions of plaintext are just reordered?

• Substitution cipher

• Transposition cipher

• Rail Fence cipher

• Columnar cipher

What is the term for a single columnar transposition applied twice to strengthen encryption?

• Double Transposition

• Single Transposition

• Columnar Transposition

• Rail Fence Transposition