Crypto Quiz #2

Which of the following shows the word “DOG” encrypted with the Caesar cipher with a key of 5?

• IPH

• CAT

• FQI

• ITL

An encryption method that uses a series of interwoven Caesar ciphers based on the letters of a keyword is called

• hashing

• the Vigenère Cipher

• the symmetric key

• public key encryption

Decrypt means

• To convert information or data into a cipher or code, especially to prevent unauthorized access

• To make (a coded or unclear message) intelligible.

• To use a code over the internet

Encrypt means

• To convert information or data into a cipher or code, especially to prevent unauthorized access.

• To make (a coded or unclear message) intelligible.

• To use a code over the internet

Caesar Cipher is

• An encryption method in which each letter of the message is shifted by a certain amount, called the key

• An encryption method used by the Enigma Machine

• An encryption method used to safeguard today’s military messages

Cryptology means

• The practice of solving and writing encryptions

• The process of decrypting coded messages without being told the key.

• The process of shifting letters by a certain amount

Mavis Batey was a codebreaker during

• World War I

• World War II

• Civil War

• Cold War

Choose the characteristic that makes cyberbullying harmful

• Persistent

• Low self-esteem

• Depression

What is asymmetric encryption?

• When one key is used for encryption and a different one for decryption.

• When the same key is used both for encryption and decryption.

• When one key is used for encryption and no key is needed for decryption.

Public-key cryptography (a form of asymmetric cryptography) is an encryption method that’s widely used because:

• It is computationally infeasible to compute the private key based on the public key.

• It’s easier to share one public key than billions of private keys.

• It’s much tougher to crack asymmetric encryption than symmetric.

• It’s more secure because the private keys do not ever need to be transmitted or revealed to anyone.