| Issue |
SHS Web of Conf.
Volume 166, 2023
2022 International Conference on Education Innovation and Modern Management (EIMM 2022)
|
|
|---|---|---|
| Article Number | 01025 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1051/shsconf/202316601025 | |
| Published online | 05 May 2023 | |
An optimization scheme of partial total homomorphic encryption
School of Computer Science, China West Normal University, Nanchong 637002, China
* Corresponding author: zhaohai_jun@163.com
In order to further improve the effectiveness of homomorphic cryptography, we optimize Lauter et al. 's partial homomorphic cryptography scheme, and propose a new RLWE-based total homomorphic cryptography (FHE) scheme, which combines a series of existing techniques with the Chinese residual theory, and merges several “plaintext slots” into a ciphertext for homomorphic computation. The extended key transformation technology and modulo transformation technology are used to reduce the noise of ciphertext and enable it to carry out the next homomorphic operation. Compared with the original scheme, the security and effectiveness of the scheme were studied on the premise of ensuring CPA security, and the results showed that the performance of the scheme was improved by N times.
© The Authors, published by EDP Sciences, 2023
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