What is the difference between symmetric encryption algorithms AES-128 and AES-256?

Question

Cybersecurity Fundamentals — Hard

What is the difference between symmetric encryption algorithms AES-128 and AES-256?

Accepted Answer

AES-128 uses a 128-bit key with 10 encryption rounds, while AES-256 uses a 256-bit key with 14 rounds. This provides AES-256 with a larger key space and greater resistance to brute force attacks, although it comes with slightly more computational overhead.