Linux Foundation Certified IT Associate (LFCA) — Question 9

Encryption that uses both a private key and public key is known as what?

Answer options

• A. Key Pair Encryption (symmetric cryptography)
• B. HMAC Cryptography (hash based message authentication)
• C. Public Key Cryptography (asymmetric cryptography)
• D. DPE (dual-phased hybrid encryption)

Correct answer: C

Explanation

The correct answer is C, Public Key Cryptography (asymmetric cryptography), as it specifically refers to the use of a pair of keys for encryption and decryption. Option A is incorrect because it describes symmetric cryptography, which uses one key. Option B relates to message authentication rather than encryption types, and option D is not a standard term in cryptography.