Apparatus and method with homomorphic encryption
US12425182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2023 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Apr 9, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3093
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method with homomorphic encryption are provided. A method for performing a homomorphic encryption operation may include generating a second ciphertext, having a second total number of dimensions, by performing a key switching operation using a key-switching key to generate the second ciphertext, encrypted by a second secret key, based on a homomorphic encrypted first ciphertext on a first modulus encrypted by a first secret key, where the first ciphertext has a first total number of dimensions, and generating a ciphertext on a second modulus by performing a blind rotation operation based on the second ciphertext and an operation key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.