Certified Ethical Hacker (CEH) Practice Question

ChaCha20-Poly1305 is a stream-cipher-based authenticated-encryption construction designed to perform well on general-purpose CPUs. Because it relies only on simple ARX (add-rotate-xor) operations, it does not need the dedicated AES instruction sets found in many desktop processors. On devices that lack AES-NI-such as many mobile ARM SoCs-ChaCha20-Poly1305 typically outperforms AES-GCM while still providing the same AEAD security guarantees. It does not change the key-exchange mechanism, offer post-quantum resistance, or extend symmetric key lengths beyond 256 bits, so those suggested advantages are incorrect.