Encryption Quiz

What is the minimum key length recommended for secure communications using symmetric encryption?

• 64 bits

• 128 bits

• 256 bits

• 512 bits

What is the block size of AES?

• 64 bits

• 128 bits

• 256 bits

• 512 bits

What is the purpose of using a longer key in encryption algorithms?

• To increase speed

• To enhance security

• To reduce complexity

• To simplify implementation

What is the primary characteristic of stream ciphers?

• Encrypts data in large blocks

• Encrypts plaintext one byte or one bit at a time

• Uses a long key length

• Requires high computational power

What is the main reason to avoid using 3DES?

• It is too secure

• It is scheduled to be retired in 2023

• It uses a single encryption process

• It is faster than DES

What is the main advantage of stream ciphers over block ciphers?

• They are more secure

• They are typically faster

• They use longer keys

• They are easier to implement

Which algorithm is a faster alternative to AES?

• DES

• 3DES

• SEAL

• RC4

What does SSL stand for in the context of asymmetric key algorithms?

• Secure Socket Layer

• Secure Shell Layer

• Secure System Layer

• Secure Software Layer

What is a benefit of key management in asymmetric algorithms?

• It is more complex

• It is simpler than symmetric algorithms

• It requires more resources

• It is less secure

Which key can be made public in asymmetric encryption?

• Both keys

• Neither key

• Only the public key

• Only the private key