Introduction to Cryptography Quiz

What is the primary purpose of cryptography?

• To store information

• To secure information

• To share information

• To analyze information

Who used the Caesar Cipher?

• Napoleon

• Julius Caesar

• Albert Einstein

• Ada Lovelace

What defines symmetric key cryptography?

• Different keys for encryption and decryption

• Same key for both encryption and decryption

• Uses hashes instead of keys

• Only used for digital signatures

What is a characteristic of asymmetric key cryptography?

• Uses a single key

• Requires a public and a private key

• Is always faster than symmetric cryptography

• Cannot be used for key exchange

What is the Caesar Cipher?

• A complex algorithm

• A substitution cipher with fixed shifts

• A type of hash function

• A key exchange method

If the shift is 3, what does 'A' become in the Caesar Cipher?

• D

• B

• C

• E

What is encryption?

• Converting ciphertext to plaintext

• Making data readable

• Converting plaintext to ciphertext

• Storing data securely

Which of the following describes the relationship between encryption and decryption?

• They are the same process

• Decryption is a reverse process of encryption

• Encryption is more secure than decryption

• Decryption uses different keys

What does the term 'plaintext' refer to?

• Encrypted data

• Readable information

• A type of algorithm

• A key

Which encryption method is typically faster?

• Asymmetric key cryptography

• Symmetric key cryptography

• Hash functions

• None of the above