(ISC)2
CCSP · Question #866
Which cryptographic method allows computations to be performed on data without first decrypting it?
The correct answer is C. Homomorphic encryption. Homomorphic encryption schemes enable operations on ciphertexts that translate into operations on the plaintext once decrypted. Symmetric/asymmetric requires decryption, and hashing isn't reversible at all.
Submitted by dimitri_ru· Apr 18, 2026Cloud Data Security
Question
Which cryptographic method allows computations to be performed on data without first decrypting it?
Options
- ASymmetric encryption
- BAsymmetric encryption
- CHomomorphic encryption
- DHashing
How the community answered
(28 responses)- A7% (2)
- C89% (25)
- D4% (1)
Explanation
Homomorphic encryption schemes enable operations on ciphertexts that translate into operations on the plaintext once decrypted. Symmetric/asymmetric requires decryption, and hashing isn't reversible at all.
Topics
#Homomorphic Encryption#Cryptography#Data Privacy#Data in Use
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