Which encryption method uses a pair of keys (public and private) for secure communication?
- Symmetric Encryption
- Asymmetric Encryption
- Hashing
- Steganography
Answer: Asymmetric Encryption
Asymmetric Encryption (Public-Key Cryptography) uses two mathematically related keys: public key for encryption and private key for decryption. Examples include RSA, ECC, and Diffie-Hellman. It enables secure key exchange and digital signatures, unlike symmetric encryption which uses a single shared key.