A security administrator is implementing an encryption system that uses two distinct, but related keys. One key is used for encrypting data, and the other is used for decrypting it. What type of cryptography is being implemented?
Asymmetric key cryptography, also known as public-key cryptography, is the correct answer because it uses a pair of keys for encryption and decryption-a public key and a private key. Symmetric key cryptography uses a single, shared key for both encryption and decryption. Hashing creates a fixed-size, non-reversible output and is used for integrity, not for encrypting and decrypting data. A block cipher is an algorithm that encrypts data in fixed-size blocks; it describes the method of encryption rather than the key management scheme and is commonly used in symmetric encryption.
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