CASP+: Hashing Cryptography Quiz

What does HMAC stand for?

• Hyper Message Authentication Code

• Hashing Message Authorization Code

• Hash-Based Message Authentication Code

• Highly Managed Authentication Code

What are the two parameters of an HMAC?

• Message and Secret Key

• Message and Public Key

• Message and Private Key

• Message and Encryption Key

What is the purpose of a MAC?

• To delete the message

• To verify the source of a message

• To encrypt the message

• To compress the message

Which hash algorithm is used in HMAC-SHA?

• SHA

• SHA-512

• MD5

• SHA-256

What is the main advantage of Poly1305?

• Compatibility with all devices

• Ease of implementation

• High security

• Speed and efficiency

What is the key distribution problem in symmetric encryption?

• Sharing the key without exposing it to adversaries

• Using multiple keys for encryption

• Generating a unique key for each message

• Encrypting the key with a public key

What is the difference between stream cipher and block cipher?

• Stream cipher encrypts data in blocks, block cipher encrypts data one digit at a time

• Stream cipher uses a single key, block cipher uses multiple keys

• Stream cipher is faster than block cipher, block cipher is more secure

• Stream cipher encrypts data one digit at a time, block cipher encrypts data in blocks

What is the purpose of an initialization vector (IV) in stream cipher?

• To authenticate the message

• To generate a unique keystream

• To encrypt the data

• To decrypt the data

How is the key distribution problem addressed in symmetric encryption?

• By securely sharing the key during communication setup

• By using a different key for each message

• By encrypting the key with a public key

• By transmitting the key along with the message

What is the purpose of padding in block cipher?

• To compress the plaintext

• To increase the size of the plaintext

• To decrease the size of the plaintext

• To ensure the plaintext fits into equal-size blocks