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Which encryption method uses a pair of public and private keys?
- Symmetric encryption
- Asymmetric encryption
- Hashing
- Steganography
Answer: Asymmetric encryption
Asymmetric (public-key) cryptography: public key encrypts, private key decrypts (e.g., RSA, ECC). Enables secure communication, digital signatures. Symmetric uses same key for both. [[CERT-In Guidelines]]