High-Throughput AES Transciphering using CKKS: Less than 1ms
Year: 2025
Type: conference-paper
Abstract: Fully Homomorphic encryption (FHE) allows computation without decryption, but often suffers from a ciphertext expansion ratio and overhead. On the other hand, AES is a widely adopted symmetric block cipher known for its efficiency and compact ciphertext size. However, its symmetric nature prevents direct computation on encrypted data. Homomorphic transciphering bridges these two approaches by enabling computation on AES-encrypted data using FHE-encrypted AES keys, thereby combining the compactness of AES with the flexibility of FHE.
Authors: Youngjin Bae, Jung Hee Cheon, Minsik Kang, Taeseong Kim
Institution: Seoul National University
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W7084064443