Certified Information Privacy Technologist (CIPT) — Question 211

Which of the following techniques describes the use of encryption where encryption keys are divided into parts that can then be used to recover a full encryption key?

Answer options

• A. Homomorphic encryption
• B. Asymmetric cryptography
• C. Cryptographic hashing
• D. Secret sharing

Correct answer: D

Explanation

The correct answer is D, Secret sharing, which specifically involves dividing a secret, like an encryption key, into parts that can be distributed, ensuring that no single part can reveal the key. The other options do not involve this key division process; Homomorphic encryption allows computation on ciphertexts, Asymmetric cryptography uses key pairs for encryption and decryption, and Cryptographic hashing generates a fixed-size hash from input data.