Calculation device for encryption using public key and encryption method thereof
US11329799B2 · kind B2 · utility
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3References
11Claims
0Family size
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Key dates
| Filing date | Jan 31, 2020 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Jan 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An encryption method includes: calculating a second random matrix using a first random matrix and a secret key, and generating a ciphertext corresponding to a message using the second random matrix. The generating of the ciphertext includes: performing a rounding process for sending the generated ciphertext to a smaller modulus area. The generating of the ciphertext includes performing message encryption without Gaussian sampling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.