Advanced
Cybersecurity & Cryptography
Q96 / 100
What is homomorphic encryption?
Correct! Well done.
Incorrect.
The correct answer is B) An encryption scheme allowing computations to be performed on ciphertext, producing encrypted results that match operations on plaintext when decrypted
B
Correct Answer
An encryption scheme allowing computations to be performed on ciphertext, producing encrypted results that match operations on plaintext when decrypted
Explanation
FHE (Fully Homomorphic Encryption — Gentry 2009) allows arbitrary computation on encrypted data. Cloud can process encrypted data without decryption. Still ~1 million times slower than plaintext computation. CKKS/BFV schemes in active deployment for privacy-preserving ML.
Progress
96/100